20-F/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 20-F/A

(Amendment No. 1)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

for the fiscal year ended December 31, 2017

Commission File Number  1-15132

Grupo Aeroportuario del Sureste, S.A.B. de C.V.

(Exact name of registrant as specified in its charter)

Southeast Airport Group

(Translation of registrant’s name into English)

United Mexican States

(Jurisdiction of incorporation or organization)

Bosque de Alisos No. 47A — 4th Floor

Bosques de las Lomas

05120 México, D.F.

Mexico

(Address of principal executive offices)

Adolfo Castro Rivas

CEO

Grupo Aeroportuario del Sureste, S.A.B. de C.V.

Bosque de Alisos No. 47A — 4th Floor

Bosques de las Lomas

05120 México, D.F.

México

Telephone: + 52 55 5284 0408

acastro@asur.com.mx

(Name, telephone, e-mail and/or facsimile number and address of company contact person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of each class:	Name of each exchange on which registered
Series B Shares, without par value, or shares	New York Stock Exchange, Inc.*
American Depositary Shares, as evidenced by American Depositary Receipts, or ADSs, each representing ten shares	New York Stock Exchange, Inc.

*Not for trading, but only in connection with the registration of American Depositary Shares, pursuant to the requirements of the Securities and Exchange Commission.

Securities registered or to be registered pursuant to Section 12(g) of the Act: None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: N/A

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report:

Series B Shares, without par value:  277,050,000

Series BB Shares, without par value:  22,950,000

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

x Yes   o No

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

o Yes   x No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

x Yes   o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

x Yes   o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See definition of “large accelerated filer,” “accelerated filer,” and “emerging growth company” in Rule 12b-2 of the Exchange Act, (Check one):

Large accelerated filer x Accelerated filer o Non-accelerated filer o Emerging growth company o

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act. o

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP o IFRS x Other o

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.

o Item 17   o Item 18

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

o Yes   x No

Explanatory Note

This Amendment No. 1 to the Annual Report on Form 20-F of Grupo Aeroportuario del Sureste, S.A.B. de C.V. (the “Company”) amends the Company’s Annual Report on Form 20-F for the fiscal year ended December 31, 2017 (the “Original 20-F”), which was filed with the Securities and Exchange Commission on April 25, 2018. The Company is filing this Amendment No. 1 solely for the purposes of adding Exhibit 101 to Item 19 “Exhibits,” which was not included in the Original 20-F, and to furnish the Interactive Data File disclosure as Exhibit 101 in accordance with Rule 405 of Regulation S-T.

Except as described above, this Amendment No. 1 does not amend any information set forth in the Original 20-F, and the Company has not updated disclosures included therein to reflect any events that occurred subsequent to April 25, 2018.

3

PART III

ITEM 19. EXHIBITS

Exhibit Number	Description
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

4

SIGNATURES

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this Amendment No. 1 to the annual report on Form 20-F on its behalf.

Grupo Aeroportuario del Sureste, S.A.B. de C.V.
By:	/s/ Adolfo Castro Rivas
	Name:	Adolfo Castro Rivas
	Title:	Chief Executive Officer

Date: April 30, 2018

5

XML

Document And Entity Information	12 Months Ended
	Dec. 31, 2017 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Entity Registrant Name	SOUTHEAST AIRPORT GROUP
Entity Central Index Key	0001123452
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Trading Symbol	ASURB
Entity Common Stock, Shares Outstanding	0

XML

Consolidated Statements of Financial Position - MXN ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents (Note 5)		$ 4,677,454	$ 3,497,635
Restricted cash and cash equivalents (Note 5.1)		106,350
Accounts receivable - Net (Note 6)		685,502	464,872
Recoverable taxes (Note 14)		82,891	111,738
Inventory		50,239	24,392
Other assets		185,426	134,381
Total current assets		5,787,862	4,233,018
NON-CURRENT ASSETS:
Land, furniture and equipment - Net (Note 7)		473,238	323,099
Intangible assets, airport concessions and goodwill - Net (Notes 1 and 8)		50,353,003	20,284,126
Account receivable from joint venture (Notes 6 and 15.1)	[1]		1,886,546
Investments in joint venture accounted for by the equity method (Note 9)			2,489,302
Total assets		56,614,103	29,216,091
CURRENT LIABILITIES:
Bank loans (Note 11)		173,471	58,336
Income taxes payable		133,316	59,613
Accounts payable and accrued expenses (Note 10)		2,101,862	475,234
Total current liabilities		2,408,649	593,183
NON-CURRENT LIABILITIES:
Bank loans (Note 11)		10,321,382	4,402,440
Long-term debt (Note 12)		7,149,177
Deferred income tax (Note 14)		3,033,930	1,456,020
Employee benefits		12,664	10,494
Total liabilities		22,925,802	6,462,137
STOCKHOLDERS' EQUITY (Note 13):
Capital stock		7,767,276	7,767,276
Capital reserves		8,127,637	5,938,387
Accumulated other comprehensive income		195,511	893,132
Retained earnings		9,949,654	8,155,159
Controlling interest		26,040,078	22,753,954
Non-Controlling interest		7,648,223
Total stockholders' equity		33,688,301	22,753,954
Total liabilities and stockholders' equity		$ 56,614,103	$ 29,216,091

[1] (*) In 2013, the Company granted a loan to Aerostar of Ps.1,254,800 (USD100,000) at an annual interest rate of LIBOR plus 2.10% valid for the long term. As of June 1, 2017, derived from the incorporation of Aerostar in the consolidation of the Company, this loan forms part of the elimination entries.

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Consolidated Statements of Comprehensive Income - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
REVENUE (Notes 3 and 19.1.3):
Aeronautical services	$ 6,484,219	$ 4,532,194	$ 3,921,949
Non-aeronautical services	4,261,383	3,104,343	2,491,941
Construction services (Note 3.1.3)	1,844,216	2,116,954	2,580,707
Total revenue	12,589,818	9,753,491	8,994,597
OPERATING COSTS AND EXPENSES (Note 4):
Cost of aeronautical and non-aeronautical services (Includes impairment by Ps.4,719,096, Note 8.1)	9,010,017	2,499,095	2,144,003
Cost of construction	1,898,550	2,116,954	2,580,707
Administrative expenses	204,418	204,843	196,990
Total costs and operating expenses	11,112,985	4,820,892	4,921,700
Operating profit	1,476,833	4,932,599	4,072,897
Interest income	245,787	184,569	155,718
Interest expense	(618,831)	(126,186)	(97,017)
Exchange gain	761,782	738,648	379,741
Exchange loss	(620,572)	(842,500)	(548,405)
Operating expense	(231,834)	(45,469)	(109,963)
Income of joint venture accounted by the equity method (Note 9)	112,345	144,248	50,923
Gain in business combinations (Note 1)	7,029,200
Net income before income taxes	8,386,544	5,031,378	4,013,857
Income taxes (Note 14)
Asset tax	932	932	5,259
Income tax	1,635,447	1,401,184	1,094,863
Net income for the year	6,750,165	3,629,262	2,913,735
Net income for the year attributable to:
Controlling interest	5,834,484	3,629,262	2,913,735
Non-Controlling interest	915,681
Items that will not be reclassified to income for the period:
Remeasurement of labor obligations	(2,739)	(705)	463
Items that might be reclassified to income for the period:
Effect of the foreign currency translation in subsidiaries	315,021
Cancellation of the effect foreign currency translation in the joint venture	(655,515)
Other comprehensive income of joint venture accounted for by the equity method	(237,617)	400,346	272,757
Total comprehensive income for the year	6,169,315	4,028,903	3,186,955
Comprehensive income for the year attributable to:
Controlling interest	5,134,124	4,028,903	3,186,955
Non-Controlling interest	1,035,191
Total comprehensive income for the year	$ 6,169,315	$ 4,028,903	$ 3,186,955
Basic and diluted earnings per share expressed in Mexican Pesos (Note 18.19)	$ 19.45	$ 12.10	$ 9.71

XML

Consolidated Statements of Comprehensive Income (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2017 MXN ($)
Impairment loss recognised in profit or loss	$ 4,719,096

XML

Consolidated Statement of Changes in Stockholders' Equity - MXN ($) $ in Thousands	Total	Capital stock	Legal reserve	Reserve for repurchase of shares	Other Comprehensive income	Retained earnings	Non-controlling interests [member]
Balance at Dec. 31, 2014	$ 18,751,096	$ 7,767,276	$ 618,418	$ 2,582,292	$ 220,029	$ 7,563,081
Comprehensive income:
Net profit for the year	2,913,735					2,913,735
Other comprehensive income (expense) accounted for by the equity method	272,757				272,757
Cancellation of the effect of foreign currency translation in the joint venture
Effect of foreign currency translation in subsidiaries
Remeasurement of labor obligations	463					463
Total comprehensive income	3,186,955				272,757	2,914,198
Transfer to legal reserve			128,659			(128,659)
Transfers to the reserve for acquisitions of shares (Note 13)				1,098,144		(1,098,144)
Dividends paid	(1,530,000)					(1,530,000)
Balance at Dec. 31, 2015	20,408,051	7,767,276	747,077	3,680,436	492,786	7,720,476
Comprehensive income:
Net profit for the year	3,629,262					3,629,262
Other comprehensive income (expense) accounted for by the equity method	400,346				400,346
Cancellation of the effect of foreign currency translation in the joint venture
Effect of foreign currency translation in subsidiaries
Remeasurement of labor obligations	(705)					(705)
Total comprehensive income	4,028,903				400,346	3,628,557
Transfer to legal reserve			146,056			(146,056)
Transfers to the reserve for acquisitions of shares (Note 13)				1,364,818		(1,364,818)
Dividends paid	(1,683,000)					(1,683,000)
Balance at Dec. 31, 2016	22,753,954	7,767,276	893,133	5,045,254	893,132	8,155,159
Balance at Dec. 31, 2016	22,753,954	7,767,276	893,133	5,045,254	893,132	8,155,159
Comprehensive income:
Net profit for the year	6,750,165					5,834,484	915,681
Other comprehensive income (expense) accounted for by the equity method	(237,617)				(237,617)
Cancellation of the effect of foreign currency translation in the joint venture	655,515				(655,515)
Effect of foreign currency translation in subsidiaries	315,021				195,511		119,510
Remeasurement of labor obligations	(2,739)					(2,739)
Total comprehensive income	6,169,315				(697,621)	5,831,745	1,035,191
Transfer to legal reserve			181,869			(181,869)
Transfers to the reserve for acquisitions of shares (Note 13)				2,007,381		(2,007,381)
Dividends paid	(1,848,000)					(1,848,000)
Non-controlling interest	6,613,032						6,613,032
Balance at Dec. 31, 2017	$ 33,688,301	$ 7,767,276	$ 1,075,002	$ 7,052,635	$ 195,511	$ 9,949,654	$ 7,648,223

XML

Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equity [abstract]
Dividends paid, ordinary shares per share	$ 6.16	$ 5.6	$ 5.6

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Consolidated Statements of Cash Flows - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating activities
Income before income taxes	$ 8,386,544	$ 5,031,378	$ 4,013,857
Adjustments for:
Gain in business combination (Note 1)	(7,029,200)
Impairment of goodwill (Note 8.1)	4,719,096
Depreciation and amortization (Notes 4, 7 and 8)	1,166,114	529,660	468,996
Interest income	(245,787)	(184,569)	(155,718)
Interest expense	618,831	126,186	101,551
Other comprehensive income from results of joint venture accounted by the equity method (Note 9)	(112,345)	(144,248)	(50,923)
Exchange loss	95,788	719,224	536,374
Exchange gain	(262,405)	(384,178)	(252,991)
Working capital variations (excluding assets acquired and liabilities assumed in business combination):
Accounts receivable (Note 6)	(51,155)	(45,258)	30,194
Recoverable taxes and other current assets	54,030	336,485	316,609
Other assets	394,972
Trade accounts payable and other liabilities (Note 10)	154,791	94,586	11,802
Total adjustments to reconcile profit (loss)	7,889,274	6,079,266	5,019,751
Income taxes paid (Note 14)	(1,858,139)	(1,569,879)	(1,366,174)
Net cash flows generated from operating activities	6,031,135	4,509,387	3,653,577
Investing activities
Improvements to assets under concession and acquisition of furniture and equipment (Note 8)	(1,471,418)	(1,814,482)	(2,906,567)
Loans collected from joint venture (Note 9)	275,376	325,693
Restricted cash and equivalents (Note 5.1)	(89,361)
Interest received	259,717	122,093	90,013
Net cash flows used in investing activities	(4,961,153)	(1,366,696)	(2,816,554)
Financing activities
Bank loans received (Note 11)	8,000,000
Bank loans paid (Note 11)	(5,339,338)
Interest paid (Note 11)	(628,222)	(106,873)	(97,017)
Long-term debt paid (Note 12)	(102,907)
Dividends paid (Note 13)	(1,848,000)	(1,683,000)	(1,530,000)
Net cash flows generated (used) from financing activities	81,533	(1,789,873)	(1,627,017)
Increase (decrease) in cash and cash equivalents	1,151,515	1,352,818	(789,994)
Cash and cash equivalents at the beginning of the year	3,497,635	2,084,160	2,855,362
Exchange gains on cash and cash equivalents	28,304	60,657	18,792
Cash and cash equivalents at the end of the year	4,677,454	3,497,635	2,084,160
Aerostar [Member]
Investing activities
Improvements to assets under concession and acquisition of furniture and equipment (Note 8)	(183,386)
Financing activities
Cash and cash equivalents at the end of the year	436,774
Airplan [Member]
Investing activities
Improvements to assets under concession and acquisition of furniture and equipment (Note 8)	$ (3,752,081)

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Overview:

12 Months Ended

Dec. 31, 2017

General information about financial statements [Abstract]

Disclosure of general information about financial statements [text block]

Note 1 - Overview:

Grupo Aeroportuario del Sureste, S. A. B. de C. V. (ASUR) is a Mexican Company that was incorporated in April 1998 as a wholly-owned entity of the federal public government to administer, operate, maintain and exploit nine airports in the Southeast of Mexico. The nine airports are located in the following cities: Cancún, Cozumel, Mérida, Huatulco, Oaxaca, Veracruz, Villahermosa, Tapachula and Minatitlan. ASUR and its subsidiaries are collectively referred to as the “Company”, “ASUR” or the “Group”.

The Company operates two companies that provide administrative services: Servicios Aeroportuarios del Sureste, S. A. and C. V. and RH Asur, S. A. de C. V. In addition, Cancún Airport has a more than 95% stake in the following subsidiaries: Caribbean Logistic, S. A. de C. V., Cargo RF, S. A. de C. V and Cancún Airport Services, S. A. de C. V., companies providing storage services, handling services, warehousing and custody of foreign trade merchandise and the related to the premises inspected at airports concessioned to third parties, as well as Cancún Airport Services, S. A. de C. V., whose main activity is to establish and operate shops, establishments and stores for the sale of all kinds of products.

On June 1998, the Department of Communications and Transportation (SCT) granted the Company's subsidiaries concessions to administer, operate, exploit and develop the nine Southeast airports over a period of 50 years commencing on November 1, 1998. The term of the concessions may be extended by the parties under certain circumstances.

Notwithstanding the Company's rights to administer, operate, exploit, develop and, if applicable, build the nine airports pursuant to the Mexican General Law of National Assets; all the land, furniture and permanent fixed assets located in the airports are the property of the Mexican federal government. Upon expiration of the Company's concessions, these assets, including any improvements made during the term of the concessions, automatically revert to the Mexican federal government.

At December 31, 2015, 2016 and 2017, the Company's outstanding capital stock was held by the investing public (67.46%) Inversiones y Técnicas Aeroportuarias, S. A. P. I. de C. V. (ITA) (7.65%), Servicios Estrategia Patrimonial, S. A. de C. V. (7.12%), Agrupación Aeroportuaria Internacional III, S. A. de C. V. (5.46%), and Remer Soluciones a la Inversión, S. A. de C. V. (12.31%). The shareholding is divided amongst different shareholders, without there being an individual or a particular group that controls the Company directly.

1.1) Acquisition of Aerostar

Through its subsidiary Aeropuerto de Cancún, S. A. de C. V. (Cancún), on May 26, 2017, the Company increased its share capital from 50% to 60% in Aerostar Airport Holdings, LLC (Aerostar), which operates and administers International Airport Luis Muñoz Marín (LMM Airport) in San Juan Puerto Rico. As a result of this increase, the Company acquired control in Aerostar, as it now has the capacity to direct its relevant business activities. With this acquisition, the Company expects to continue offering world-class services to its customers, providing improvements to operations and customer services for the benefit of LMM Airport passengers.

Until May 26, 2017, the Company considered Aerostar to be a joint venture (see Note 9); as of June 1, 2017, in accordance with International Financial Reporting Standard 3, “Business combination”, the acquisition is considered a business combination.

The following table summarizes the consideration pertaining to Aerostar at May 26, (the combination date or date of the transaction):

	May 26,
	2017
Cash paid	Ps	726,628
Previous benefit acquired by departure of the previous shareholder		848,923
Consideration on May 26, 2017		1,575,551
Fair value of share capital held in Aerostar prior to the business combination		7,877,756
Non-controlling interest at the business combination date		6,302,205
Total purchase consideration	Ps	15,755,512

Due to the business combination, the following changes were effected:

- The Company estimated a fair value of its previously acquired share capital in Aerostar of 50% at Ps.7,877,756, which showed a book value at the date of the transaction of Ps.2,353,040. As a result of measuring its interest in Aerostar at fair value, the Company has recognized a nonrecurring profit, unrelated to the cash flow, of Ps.5,524,716, which is included as “Gain in business combination” in the consolidated statement of income. The mechanics to determine fair value were based on the use of two methods: a) discounted cash flows and b) implicit multiples (based on a sample of comparable public companies). The most relevant assumptions considered in the first method were the applied discount rate, the projected passenger traffic, and its growth rate and percentages of revenue growth, costs and expenses in the term of the concession; and for the second method, the multiples of income and profit before interest, taxes, amortizations and depreciations and adjustments applied to the net premium of control.

- Once the Joint Venture between the Company and Highstar Capital IV (Highstar) was completed, both parties decided to review the income received and contributions made in order to adjust the price to be paid for the 10% acquired by the Company. As a result of the revision, the adjustment to the price was Ps.848,923 (included in the line “gain in business combination” of the income statement). The consideration paid at May 26, 2017, includes an amount paid in cash by the Company of Ps.726,628 plus the benefit previously acquired for the departure of Highstar. Additionally, as a result of the consolidation of Aerostar at the date of the business combination, the effects of foreign currency translation accrued at the transaction date were recycled, which amounted to Ps.655,515. This movement was recorded in the line "gain in business combination" within the consolidated statement of income.

Said gain was presented as an adjacent line where the equity method was recognized, as it is considered associated with said transaction and because the Company does not perform this type of operations as part of its ordinary activities.

- During the evaluation of assets stage, an intangible asset derived from the “commercial rights” acquired was identified, representing the rights to commercially exploit the areas of the airport in addition to the aeronautical operation, such as, commercial store leasing and advertising spots, etc., amounting to Ps.6,053,820. For its identification, the discounted cash flow method was used to determine the fair value of commercial rights, and the most relevant assumptions considered were the applied discount rate, projected passenger traffic, as well as percentages of revenue, costs and expenses growth during the term of the concession.

- Due to the difference resulting from the comparison of the fair values and the book value, a deferred income tax was determined at Ps.605,382.

- The difference between the net assets acquired in the business combination and the total consideration results in a goodwill of Ps.5,606,265 at the business combination date (see Note 8.1). The goodwill associated with this business combination is not deductible for income tax purposes.

- An amortization of the intangible identified in the business combination has been determined at Ps.98,780 and expensed as part of the depreciation and amortization in the consolidated statement of income.

- The non-controlling interest derived from this transaction was determined to be Ps.6,302,205. This interest was determined at fair value with references to comparable market values, since Highstar at the same time sold its interest to another Company at the time of the transaction.

In the case of business combinations carried out in stages, International Financial Reporting Standards (IFRS) require that any interest previously held by an acquirer in the acquired entity be adjusted to its fair value at the business combination date, and any gain (or loss) arising from such remeasurement are recognized under gain or loss in the consolidated statement of income. The IFRS also require that any amount previously recognized in comprehensive income relating to such investments be recycled to the consolidated statement of income, as if such investment were sold.

The fair value of the trade and accounts receivable considered in the business combinations approximate their carrying value.

Liabilities at the fair value have been calculated at the date of the transaction and correspond mainly to bank loan valuations. At the reporting date, those liabilities were evaluated, and it has been determined that book value is the same as the fair value determined, which was calculated based on their possible settlement. The cash flow required to settle those liabilities is expected to materialize between 1 to 17 years.

The liabilities have also been calculated at the fair value at the combination date and are similar to their book value.

Following are the fair value of the net assets acquired under the business combination at the acquisition date:

		Fair
		value
Assets
CURRENT:
Cash and cash equivalents	Ps	543,242
Restricted cash		16,989
Other current assets		142,410
Current assets		702,641
NON-CURRENT:
Land, furniture and equipment		135,929
Intangible assets, airport concessions - Net		19,308,402
Total non-current assets		19,444,331
Total assets	Ps	20,146,972
Liabilities
CURRENT:
Current liabilities	Ps	647,896
NON-CURRENT:
Long-term debt		8,254,620
Deferred income tax		808,894
Other non-current liabilities		286,315
Total non-current liabilities		9,349,829
Total liabilities		9,997,725
Net assets acquired under the business combination		10,149,247
Total purchase consideration		15,755,512
Goodwill at the acquisition date (Note 8.1)	Ps	5,606,265

The main characteristics of fair value adjustments are described below:

Caption	Item	Methodology
Intangible assets:
Concession	Commercial exploitation rights in Airplan	Discounted flows and implicit multiples using the WACC rate

The fair value adjustments mentioned in the previous table were obtained for the purpose of applying the purchase method of the Aerostar acquisition. The noncontrolling interest was recognized as its fair value.

The projection used to apply the aforementioned methodologies was based on business plans approved by Aerostar Management.

The goodwill recognized by the Company is attributable to the expected growth in the North American airport sector and in line with the Company's expansion opportunity in the consolidation of additional airport groups. No contingent liability or contingent consideration arrangement has arisen from this acquisition. If the acquisition had taken place on January 1, 2017, pro forma revenues would have increased by Ps.1,549,099 (unaudited) and pro forma net income by Ps.127,042 (unaudited).

For the determination of the fair value of the noncontrolling interest, considering the absence of public market prices of Aerostar, the fair value of the controlling party was taken as a basis, which reflects a goodwill of the Company as a whole, including the controlling and noncontrolling parties, thereby better reflecting the economic interests of the transaction given that the noncontrolling party also participated in the future economic benefits generated from the acquisition.

The noncontrolling fair value interest is determined at 100%, and then the segregation of the controlling and noncontrolling entities is undertaken in order to assess the reasonableness of the two. As long as 100% is valued, while the 100% control, the control premium is not assigned to the controlling interest.

Aerostar relevant information and its significant non-controlling interest

The Aerostar condensed financial information at December 31, 2017, which shows its significant non-controlling interest, is shown below:

	December 31
Condensed statement of financial position	2017
Cash and cash equivalents	Ps	436,774
Restricted cash		106,350
Other current assets		247,517
Total current assets		790,641
Financial liabilities:
Current liabilities		(633,084)
Working capital		157,557
Land, furniture and equipment		141,708
Intangible assets, airport concessions - Net		13,636,227
Other long term assets		584
Long term debt		(7,489,465)
Accounts payable to the Company		(1,210,088)
Deferred income tax - Net		(267,307)
Shareholders’ equity	Ps	4,969,216

	Period from
	June 1 to
Condensed statements of comprehensive income	December 31, 2017
Revenue	Ps	1,497,557
Operating cost and expenses		(1,186,028)
Comprehensive financial cost		(295,803)
Deferred income tax		(28,679)
Net income for the year		(12,953)
Foreign currency translation		254,110
Total comprehensive income for the year	Ps	241,157

Regarding the non-controlling interest in it's subsidiary Aerostar, there are no significant restrictions on the possibility of having access to the assets or of using them for the payment of obligations.

1.2) Acquisition of Airplan

On October 19, 2017 (business combination date, or the transaction date), Cancún acquired 92.42% of the shares of Sociedad Operadora de Aeropuertos Centro Norte, S.A. (Airplan), a Company incorporated in Medellín, Colombia, on March 6, 2008, with the business purpose of managing, operating, commercially exploiting, conditioning, modernizing and maintaining the Enrique Olaya Herrera in Medellín, José María Córdova in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports. At the transaction date, Airplan consolidated its results into the Company's consolidated financial statements.

In accordance with IFRS 3, the acquisition is considered a business combination, and therefore, it has been recorded using the purchase price method. The acquisition has been recorded by distributing the total assets acquired, including intangible assets and assumed liabilities, based on the fair values determined at the date of acquisition. The excess of the acquisition cost over the net of the fair values of the assets acquired and liabilities assumed has been recorded as goodwill.

A goodwill of Ps.1,474,955 was recognized at the business combination date (see Note 8.1). The goodwill associated with this business combination is not deductible for income tax purposes. The goodwill consists of the fair value of the net assets and the identification of the implicit intangible asset within the concession that represents future benefits (both airport and non-airport), which include the rights to operate the airport facilities, either the airport operation itself or the commercial exploit areas, aside from the aeronautical operation.

The fair value of the Trade and accounts receivable considered in the business combinations approximate their carrying value.

The liabilities have been determined at fair value at the date of the combination and correspond mainly to the valuation of bank loans.

For the determination of the fair value of the non-controlling interest, comparable market values were used (based on a sample of comparable public companies). The most relevant assumptions considered were multiples of income and earnings before interest, taxes, amortizations and depreciations and adjustments applied to the net premium of control.

The following table summarizes the consideration pertaining to Airplan at the business combination date:

	October 19
	2017
Consideration paid on October 19, 2017	Ps	3,789,797
Non-controlling interest at the combination date		310,827
Total purchase consideration	Ps	4,100,624

The distribution of the purchase price over the net assets acquired of Airplan at the business combination date are shown below:

	Fair
	value
Assets
CURRENT:
Cash and cash equivalents	Ps	37,716
Other current assets		189,372
Current assets		227,088
NON-CURRENT:
Land, furniture and equipment		3,400
Intangible assets, airport concessions - Net		7,232,588
Total non-current assets		7,235,988
Total assets	Ps	7,463,076
Liabilities
CURRENT:
Current liabilities	Ps	551,000
NON-CURRENT:
Bank loans		3,424,897
Deferred income tax		861,483
Other non-current liabilities		27
Total non-current liabilities		4,286,407
Total liabilities		4,837,407
Net assets acquired under the business combination		2,625,669
Total consideration		4,100,624
Goodwill at acquisition date and at December 31, 2017 (Note 8.1)	Ps	1,474,955

The main characteristics of fair value adjustments are described below:

Caption	Item	Methodology
Intangible assets:
Concession	Commercial exploitation rights in Airplan	Discounted flows and implicit multiples using the WACC rate
Non-current liabilities:
Long-term debt	Fair value of the Bank loans	Present value of estimated future cash flows

The fair value adjustments specified in the previous table were obtained from Company Management for the purpose of applying the purchase method to the acquisition of Airplan. The noncontrolling interest was recognized based on the proportional interest in net acquired assets.

The projections used to apply the methodologies described above were based on the business plans approved by the Administration of Airplan at the time of acquisition, which subsequently served as the basis for the analysis of deterioration made by the Administration at the date of the consolidated financial statements.

The goodwill recognized by the Company represents non-separable assets due to the growth potential and development opportunities of Airplan. No contingent liability has arisen from this acquisition that must be registered; there are also no contingent consideration agreements. If the acquisition had taken place on January 1, 2017, pro forma revenues would have increased by Ps.2,640,493 (unaudited) and pro forma net income by Ps.231,130 (unaudited).

No contingent liability or contingent consideration arrangement has arisen from this acquisition.

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Segment Information:

12 Months Ended

Dec. 31, 2017

Disclosure of operating segments [abstract]

Disclosure of entity's operating segments [text block]

Note 2 - Segment information:

The Company is a Mexican entity that was incorporated in April 1998 as a wholly-owned entity of the federal public government to administer, operate and if necessary, condition and modernize nine airports in the Southeast of Mexico. The nine airports are located in the following cities: Cancún, Cozumel, Mérida, Huatulco, Oaxaca, Veracruz, Villahermosa, Tapachula and Minatitlán. The Company operates two companies that provide administrative services: Servicios Aeroportuarios del Sureste, S. A. and C. V. and RH Asur, S. A. de C. V.

In addition, Cancún Airport holds an interest in the following subsidiaries: 100% in Caribbean Logistic, S. A. de C. V. and Cargo RF, S. A. de C. V, companies providing storage services, handling services, warehousing and custody of foreign trade merchandise and the related to the premises inspected at airports concessioned to third parties, as well as Cancún Airport Services, S. A. de C. V., whose main activity is to establish and operate shops, for the sale of all type of products.

New reportable segments since the date of acquisition:

On May 26, 2017, Cancún Airport increased its shareholding from 50% to 60%, in Aerostar Airport Holdings LLC, a limited liability Company, incorporated on February 27, 2013 under the laws of the Commonwealth of Puerto Rico. Aerostar entered into a Lease Agreement (Agreement) for 40 years with the Port Authority of Puerto Rico (Authority), owner of the LMM Airport, for the purpose and essential consideration of safely operating the airport for public; use, maintaining the safety and protection of the LMM Airport Facility at the highest possible levels, and promoting, facilitating, assisting and improving trade, tourism and economic development, for which the recognition as a joint venture was until May 26, 2017, and as of June 1, 2017, Aerostar consolidates line by line in the Company's finances.

On October 19, 2017, the Cancún Airport acquired 92.42% of the shares of Airplan, a Company domiciled in the city of Medellín, Colombia, who operates and administer through a single concession (contract 8000011-OK) the Enrique Olaya Herrera in Medellín, José María Córdova in Rionegro. El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports. As of October 19, 2017, Airplan is part of the consolidation of the Company.

The information by segments is shown in the next page:

Year ended on December 31, 2015

										Holding &;				Consolidation
		Cancún	Aerostar (*)	Airplan (**)		Mérida		Villahermosa		services		Other		adjustment		Total
Aeronautical revenue	Ps	2,877,885			Ps	272,065	Ps	174,103	Ps		Ps	597,896	Ps		Ps	3,921,949
Non-aeronautical revenue		2,250,665				71,872		58,278				151,539		(40,413)		2,491,941
Revenue for construction services		1,846,138				204,450		61,650				468,469				2,580,707
Other revenue						27		66		1,291,669		103,380		(1,395,142)
Operating profit		3,091,271				139,649		104,466		380,856		356,655				4,072,897
Non current assets		16,758,522				1,431,440		927,019		20,091,300		4,463,032		(20,530,958)		23,140,355
Total assets		18,465,295				1,616,518		1,226,203		20,627,797		4,864,156		(20,674,085)		26,125,884
Total liabilities		5,455,499				41,073		113,681		138,598		118,547		(149,565)		5,717,833
Improvements to assets
under concession and
acquisition of furniture and
equipment in the period		2,286,134				168,817		51,754		34		399,828				2,906,567
Amortization and depreciation		(286,660)				(36,287)		(26,098)		(2,248)		(117,702)				(468,995)

Year ended on December 31, 2016

										Holding &;			Consolidation
		Cancún	Aerostar (*)	Airplan (**)		Mérida		Villahermosa		services		Other	adjustment		Total
Aeronautical revenue	Ps	3,341,882			Ps	334,163	Ps	181,123	Ps		Ps	675,026		Ps	4,532,194
Non-aeronautical revenue		2,823,209				85,203		62,356				133,830	(255)
		3,104,343
Revenue for construction services		1,896,338				98,668		44,875				77,073			2,116,954
Other revenue										1,455,486			(1,455,486)
Operating profit		3,782,382				158,770		109,398		569,516		320,762			4,932,599
Non current assets		18,586,197				1,493,544		956,551		22,257,137		4,430,600	(22,740,956)		24,983,073
Total assets		20,972,688				1,650,201		1,308,469		23,058,995		5,109,194	(22,883,456)		29,216,091
Total liabilities		6,179,313				8,056		101,197		190,378		132,130	(148,937)		6,462,137
Improvements to assets
under concession and
acquisition of furniture and
equipment in the period		1,513,550				127,787		61,651		200		111,294			1,814,482
Amortization and depreciation		(328,819)				(39,524)		(28,349)		(2,111)		(130,857)			(529,660)

(*) Subsidiary located in Puerto Rico

(**) Subsidiary located in Colombia

Year ended on December 31, 2017

												Holding &;				Consolidation
		Cancún		Aerostar (*)		Airplan (**)		Mérida		Villahermosa		Services		Other		adjustment		Total
Aeronautical revenue	Ps	3,963,324	Ps	939,042	Ps	225,693	Ps	394,531	Ps	195,554	Ps		Ps	766,075	Ps		Ps	6,484,219
Non-aeronautical revenue		3,401,235		482,590		69,071		97,656		61,909				149,240		(318)		4,261,383
Revenue for construction services		1,421,942		75,925		187,294		46,146		6,336				106,573				1,844,216
Other revenue												1,492,287				(1,429,287)
Operating profit		4,623,499		311,529		782		264,098		119,772		501,617		374,634		(4,719,098)		1,476,833
Non-current assets		17,539,396		19,831,755		7,107,932		1,497,095		935,624		25,176,942		4,430,766		(25,693,269)		50,826,241
Total assets		20,486,290		20,609,156		7,327,398		1,769,962		1,227,172		25,693,958		5,193,436		(25,693,269)		56,614,103
Total liabilities		7,932,392		9,599,943		5,092,968		(180)		82,802		131,983		85,894				22,925,802
Fixed and intangible assets acquired				13,390,511		7,235,988												20,626,499
Exchange rate translation				686,198		161,277												847,475
Commercial right´s				6,053,820														6,053,820
Improvements to assets
under concession and
acquisition of furniture and
equipment in the period		1,009,625		139,078		189,536		50,021		8,965		813		97,174				1,495,212
Amortization and depreciation		(457,447)		(437,852)		(54,998)		(46,470)		(29,892)		(700)		(138,755)				(1,166,114)

(*) Subsidiary located in Puerto Rico

(**) Subsidiary located in Colombia

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Revenues:

12 Months Ended

Dec. 31, 2017

Revenue [abstract]

Disclosure of revenue [text block]

Note 3 - Revenues:

The Company's income at December 31, 2015, 2016 and 2017, using the classifications established in the Mexican Airports Law and Regulations, is as follows:

	January 1 to December 31,
	2015		2016		2017
Regulated services:
Airport services (*)	Ps	4,115,738	Ps	4,762,538	Ps	6,743,831
Non-regulated services:
Access fees on non-permanent ground transportation		38,476		42,917		47,756
Car parking and related access fees		75,846		83,493		183,977
Other access fees		4,879		8,634		11,130
Commercial services (**)		2,096,226		2,646,134		3,645,797
Other services		82,725		92,821		113,111
Total non-regulated services (***)		2,298,152		2,873,999		4,001,771
Construction services		2,580,707		2,116,954		1,844,216
Total	Ps	8,994,597	Ps	9,753,491	Ps	12,589,818

^(*) In 2017, this line in the statement of income includes regulated services from Aerostar of Ps.939,042 and from Airplan of Ps.225,693, once they were incorporated into the Company's financial statements as of June 1, 2017 and October 19, 2017, respectively.

^(**) Commercial revenues do not include access fees and car parking.

^(***) This line, in the statement of income, includes the items of complementary and airport services that amount to a total of Ps.193,789, Ps.230,344 and Ps.259,612 in 2015, 2016 and 2017, respectively.

3.1) Revenue recognition

Revenue comprises the fair value of the consideration received or to be received for the services provided mainly during the ordinary course of the Company's operations. Revenue is presented net of value added tax and discounts, as well as of the elimination of revenue for services provided among subsidiaries of the Company, if applicable.

The Company recognizes revenue when the amount of revenue can be reliably measured, it is probable the future economic benefits will flow to the entity and specific criteria have been met for each type of service.

Revenue is derived from aeronautical services (which are generally related to the use of airport infrastructure by airlines and passengers), non-aeronautical services and construction services of the Company.

3.1.1) Aeronautical services

Revenue for aeronautical services consists of: a fare charged to the passenger for each departure (excluding diplomats, infants and passengers in transfer and in transit), a fare for landing based on the average between the maximum takeoff weight and the denominated zero fuel weight of the aircraft at the time of arrival, charges for parking aircrafts based on the amount of time that an aircraft spends on the ground and the arrival time, fares for the use of mechanical boarders that connect the aircraft with the terminal, and based on the arrival time and security service fees of the airport for each departing passenger. Revenue from aeronautical services are recognized when passengers board the departing aircrafts at the Company's airports, when they land at the airports, and when services are provided.

In Mexico revenues from aeronautical services are regulated by the price regulation system applicable to airports. See Note 19.1.3.

The charge for installation of passengers recognized by Aerostar is regulated, Passenger Facility Charges (PFCs) are recognized when incurred and classified as operating revenue in the income statement, which for the period from May, 31 to December 31, 2017, amounted to Ps.191,356. PFCs are restricted funds to be used to fund investment projects in airport infrastructure previously authorized by the Federal Aviation Administration (FAA). See Notes 5.1 and 9.

In the case of Airplan, regulated revenues (aeronautical) are recognized through billing issued to airlines for the provision of services for airport charges and fees in accordance with resolution No. 4530 of September 21, 2007 in Colombia. All the regulated fees are established by the Special Administrative Unit of Civil Aeronautics in Colombia (Aerocivil).

3.1.2) Non-aeronautical services

Revenues resulting from non-aeronautical services mainly result from commercial activities as defined under the Mexican Airport Law, as the lease of space at airport terminals, access fees charged to third parties that provide luggage and cargo handling services, food and other airport services and other sundry revenue, which are recognized as earned.

Currently, the leasing of space in the airports to airlines and other commercial tenants represents the most significant source of revenues from non-aeronautical services. Lease revenues are accrued monthly, and they are determined by applying a percentage set forth in the lease agreement on revenues from real sales of the lessors (share) or a minimum agreed upon.

Although certain of the revenues from non-aeronautical services are regulated under the price regulation system, the revenues from commercial activities (other than the lease of space to airlines and other airport service providers that is considered essential to an airport) are not regulated. The non-aeronautical revenues in Aerostar are primarily derived from airport concessions. This concession revenue is generated from public parking facilities and commercial tenants who provide goods and services to the public or other tenants within the airport. Commercial tenant operations include car rentals, food and beverage sales, retail and newsstand sales, display advertising, ground transportation, fixed-based operations and other services provided. The concessions and commercial revenues are recognized partially based on minimum rental guarantees. Aerostar also operates convenience stores. The revenue from these operations is recognized at the time of sale.

In the case of Airplan, non-regulated revenues (non-aeronautical) are recognized for the rendering of leased services and logistics services rendered.

3.1.3) Construction services

The Company, as operator of nine airport concessions in Mexico, is required to make improvements to the assets under concession, such as construction or enhancement services. As a result of the foregoing, the Company recognizes revenue from construction services and expenses related to those services according to the percentage of completion method. Since the Company hires third party vendors to provide construction services, the revenue related to those services is equal to the fair value of the services received. See note 8.

In the case of the construction revenues of Aerostar, improvements to the concessioned assets are required, considering the latter as a provision of construction or improvement services. Derived from the foregoing, it recognizes the revenue from construction services and the costs related to this service in accordance with the percentage of completion method; However, because these services are sub-contracted with a third party, the revenues related to this service are equal to the fair value of the services received. As of December 31, 2017, construction revenues and costs equal Ps.75,925.

For construction services of Airplan, recovery via collection is made through the billing issued to airlines for the use of airports at regulated rates established by Aerocivil, to estimate the amount of income to be recognized using the "percentage of completion method" in a given period. This is measured by reference to the proportion of contract costs incurred in the work performed to date, in relation to the total estimated costs for the contract. The costs incurred in the year in relation to the future activity of a contract, recognized as advances, are excluded from the contract costs to determine the percentage of completion. The calculations are made monthly and the estimated revenues are updated based on the percentage of execution of the contract costs.

Below is the table for Airplan concession income for the period October 19, 2017 to December 31, 2017:

Income associated with intangible compulsory works (i)	Ps	35,154
Income associated with intangible complementary works (ii)		152,140
	Ps	187,294

⁽ⁱ⁾ Compulsory works. These are the works that the concessionaire undertakes to execute in compliance with the Airport Adjustment and Modernization Plan.

⁽ⁱⁱ⁾ Complementary works. These are the works that are not part of the Adequacy and Modernization Plan but are executed at the proposal of the concessionaire, or at the request of the grantors.

3.1.4) Airports Law and Regulations thereto in Mexico.

Under the Airports Law and regulations thereto, company income is classified as Airport Services, Complementary Airport Services and Commercial Services. Airport Services mainly consist of the use of runways, taxiways and platforms for landings and departures, parking for aircrafts, use of mechanical boarders, security services, hangars, car parking, as well as the general use of the terminals and other infrastructure by the aircrafts, passengers and cargo, including the rental of space that is essential for the operation of airlines and suppliers of complementary services. Complementary Services consist mainly of ramp services and handling of luggage and cargo, food services, maintenance and repair and related activities that provide support to the airlines. Revenues from access fees charged to third parties that provide complementary services are classified as Airport Services.

The Rate Regulation Law provides that the following sources of revenues are regulated under this system:

· Revenues from airport services (as defined under the Mexican Airport Law), other than automobile parking, and

· Access fees earned from third parties providing complementary services, other than those related to the establishment of administrative quarters that the Ministry of Communications and Transportation (SCT, by its initials in Spanish) determines to be non-essential.

Commercial Services consist of services that are not considered essential for an airport's operation, such as the rental of spaces to businesses, restaurants and banks. Access fees and income from other services are recognized as services are rendered.

The following table sets forth the revenue from commercial activities for the years indicated.

	Year ended of December 31,
	2015		2016		2017
Commercial revenues:
Retail stores	Ps	712,647	Ps	904,465	Ps	1,194,772
Duty free shops		531,311		640,793		881,705
Food and beverage		334,685		439,101		609,304
Advertising revenues		121,860		122,941		139,545
Car rental companies		161,937		221,100		379,162
Banking and currency exchange services		69,036		86,780		97,311
Teleservices		8,242		10,869		12,973
Ground transportations		2,522		2,562		5,729
Other services		153,986		217,523		325,296
Access fees on non-permanent ground transportation		38,476		42,917		47,756
Car parking and related access fees		75,846		83,493		183,977
Total commercial revenues (*)	Ps	2,210,548	Ps	2,772,544	Ps	3,877,530

^(*) This line includes the concepts of access fees and car parking.

The Company leases commercial space inside and outside the terminals to third parties under operating lease agreements. Lease income is accrued monthly and is determined considering the greater of applying a percentage on the actual lessee sales (participation) or a minimum amount agreed both stated in the leasing agreements. As of December 31, 2015, 2016 and 2017, income from variable income was Ps.1,596,099, Ps.2,069,696 and Ps.2,466,980, respectively, and the fixed income portion was Ps104,128, Ps.105,203 and Ps.166,747 respectively.

As shown in the following table, the estimates for future income (per year), comes from non-cancelable operating leases considering the commercial contracts of minimum rent at December 31, 2017.

For the years ended December 31:

2018	Ps	3,986,487
2019		2,584,950
2020		2,358,698
2021		2,054,600
2022 to 2027		11,100,288
Total	Ps	22,085,023

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Costs and expenses by nature:

12 Months Ended

Dec. 31, 2017

Expenses by nature [abstract]

Disclosure of expenses by nature [text block]

Note 4 - Costs and expenses by nature:

	January 1 to December 31,
	2015		2016		2017
Termination benefits (Note 18.17)	Ps	1,133	Ps	1,237	Ps	1,984
Short term benefits		499,035		531,246		772,129
Employees’ statutory profit sharing		5,085		6,126		6,359
Electric power		92,737		108,910		234,879
Maintenance and conservation		214,439		229,904		401,479
Professional fees		70,064		103,918		217,930
Insurance and bonds		31,919		30,157		86,838
Surveillance services		125,176		144,462		207,303
Cleaning services		77,274		90,285		142,531
Technical assistance (Note 15.4)		239,175		288,111		346,487
Right of use of assets under concession (DUAC) (1)		291,505		344,939		468,695
Amortization and depreciation of intangible assets,
furniture and equipment		468,996		529,660		1,166,114
Goodwill impairment (Note 8.1)						4,719,096
Consumption of commercial items		139,603		180,636		252,602
Construction services (Note 3.1.3)		2,580,707		2,116,954		1,898,550
Financial assets impairment						45,687
Other		84,852		114,347		144,322
Total aeronautical and non-aeronautical services costs,
costs of construction services and administrative expenses	Ps	4,921,700	Ps	4,820,892	Ps	11,112,985

⁽¹⁾ As of December 31, 2017, DUAC by Ps.406,733 correspond to the consideration for the concessions in Mexico, which is equivalent to 5% of the gross revenues of each of the concessions, Ps.56,005 correspond to the consideration for the Airplan concession at 19% of gross revenues for the period from October 19 to December 31, 2017 and Ps.5,957 to the consideration for the Aerostar concession at 5% of the airport's gross receipts for the period from June 1, to December 31, 2017.

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Cash and cash equivalents:

12 Months Ended

Dec. 31, 2017

Cash and Cash Equivalents [Abstract]

Disclosure of cash and cash equivalents [text block]

Note 5 - Cash and cash equivalents:

	December 31,
	2016		2017
Cash and cash held at banks	Ps	3,142,810	Ps	4,417,791
Short term investments		354,825		240,701
Fiduciary rights (*)				18,962
Total cash and cash equivalents	Ps	3,497,635	Ps	4,677,454

^(*)       Corresponds to the Airplan Fiduciary's agreement 2875, signed with Fiduciaria Bancolombia to administer the resources of the concession contract. See Notes 8.2 and 18.5.

5.1) Restricted cash and cash equivalents

At December 31, 2017, restricted cash and cash equivalents includes Ps.106,350, which amount was collected by Aerostar from PFCs and are restricted to funding investment projects in airport infrastructure authorized by the FAA. See Notes 18.6 and 9.

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Accounts receivable - Net:

12 Months Ended

Dec. 31, 2017

Trade and other receivables [abstract]

Disclosure of trade and other receivables [text block]

  Note 6 - Accounts receivable - Net:

	December 31,
	2016		2017
Clients	Ps	592,583	Ps	858,900
Less: impairment provision		(127,711)		(173,398)
Current portion of accounts receivable		464,872		685,502
Long term accounts receivable from joint ventures
(Notes 9 and 15.1) (*)		1,886,546
Total accounts receivable	Ps	2,351,418	Ps	685,502

^(*) In 2013, the Company granted a loan to Aerostar of Ps.1,254,800 (USD100,000) at an annual interest rate of LIBOR plus 2.10% valid for the long term. As of June 1, 2017, derived from the incorporation of Aerostar in the consolidation of the Company, this loan forms part of the elimination entries.

The expectation for collection of the short-term account receivable is one month in relation to the reporting date.

At December 31, 2016, the fair value of loans contracted with Aerostar is Ps.2,133,932. The fair value of loans are based on discounted cash flows using a reference rate for similar loans. The variables used to determine the fair values of the loans were:

6-month LIBOR curve

LIBOR discount curve rating B

Credit risk of PIP credit curves

The calculation was based on a Bloomberg Libor discount rate, remaining at level 2 of the fair value hierarchy.

The fair value of the current portion of accounts receivable at December 31 2017 and 2016 is similar to its book value.

Accounts receivable are comprised mainly of Airport Use Fees (TUA, by its initials in Spanish) paid by passengers (other than diplomats, infants and passengers in transit) who travel using the airport terminals operated by the Company. The balance at December 31, 2016 and 2017 amounted to Ps.487,043 and Ps.525,379, respectively.

At December 31, 2017, the total balance of unimpaired past due accounts receivable was Ps.192,805 (Ps.71,317 at December 31, 2016). These accounts relate to a number of independent clients that do not have a recent history of non-compliance.

The maturity analysis of past due accounts receivable is as follows:

	December 31,
	2016		2017
Three months	Ps	51,820	Ps	137,155
From three to six months		592		71,049
More than six months		146,616		157,999
		199,028		366,203
Minus:
Past due accounts receivable not impaired		71,317		192,805
Amount of the estimation for impairment	Ps	127,711	Ps	173,398

The movements in the impairment provision are as follows:

Provision for impairment at January 1, 2015	Ps	130,185
Application to the provision during the period		(1,964)
Provision for impairment at January 1, 2016		128,221
Application to the provision during the period		(510)
Provision for impairment at December 31, 2016		127,711
Application to the provision during the period		36,621
Aerostar’s provision impairment		6,690
Airplan’s provision impairment		2,376
Provision for impairment at December 31, 2017	Ps	173,398

The integration of the provision for impairment of accounts receivable has been recorded in the consolidated comprehensive income statement under cost of services, and the amounts charged to the provision are written off from accounts receivable when recovery is not expected. See Note 20.3 “Reserve for doubtful accounts”, where described the procedure of its determination by the Administration. 

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Land, furniture and equipment - Net:

12 Months Ended

Dec. 31, 2017

Property, plant and equipment [abstract]

Disclosure of property, plant and equipment [text block]

  Note 7 - Land, furniture and equipment - Net:

At December 31, 2016 and 2017, the land furniture and equipment are made up as follows:

											Foreign
					Disposals				Business		currency				Disposals
	12/31/2015		Additions		transfers		12/31/2016		acquisition		translation		Additions		transfers		12/31/2017
Land	Ps	302,050					Ps	302,050	Ps	290	Ps	7					Ps	302,347
Furniture &;
equipment		55,480	Ps	5,008	Ps	(487)		60,001		8,801		380	Ps	5,852	Ps	(2,326)		72,708
Machinery &;
equipment										54,723		2,843		7,817				65,383
Computer
equipment										12,231		464		2,872				15,567
Transport
equipment										18,980		975		958				20,913
Improvements to
leased premises										42,532		2,384						44,916
Accumulated
Depreciation		(35,617)		(3,822)		487		(38,952)						(22,903)		2,326		(59,529)
		321,913		1,186				323,099		137,557		7,053		(5,404)				462,305
Equipment in transit										1,772		92		9,069				10,933
	Ps	321,913	Ps	1,186	Ps		Ps	323,099	Ps	139,329	Ps	7,145	Ps	3,665	Ps		Ps	473,238

The depreciation expense for 2017 consolidated was Ps.22,903 (Ps.4006 and Ps.3,822 in 2015 and 2016, respectively), including the depreciation of Aerostar for the period of June 1 to December 31, 2017 of Ps.20,697 and the depreciation of Airplan for the period from October 19 to December 31, 2017 of Ps.175 and which has been charged in aeronautical and non-aeronautical services costs, and administrative expenses.

XML

Intangible assets, airport concessions - Net:

12 Months Ended

Dec. 31, 2017

Service concession arrangements [Abstract]

Disclosure of intangible assets [text block]

  Note 8 - Intangible assets, airport concessions - Net:

The movements of intangible assets of airport concessions in the periods presented in the consolidated financial statements are as follows:

									Foreign
							Business		currency		Additions /
	12/31/2015		Additions		12/31/2016		Acquisition		translation		Impairment		12/31/2017
Concessions
(Regulated activity)	Ps	25,854,357	Ps	1,784,762	Ps	27,639,119	Ps	20,487,170	Ps	484,045	Ps	1,449,729	Ps	50,060,063
Licenses and ODC		191,623		13,904		205,527						18,915		224,442
Commercial Right's
(Unregulated activity)								6,053,820		140,951				6,194,771
Goodwill								7,081,220		215,334				7,296,554
Goodwill’s impairment												(4,719,096)		(4,719,096)
Accumulated
Amortization		(7,023,669)		(536,851)		(7,560,520)						(1,143,211)		(8,703,731)
	Ps	19,022,311	Ps	1,261,815	Ps	20,284,126	Ps	33,622,210	Ps	840,330	Ps	(4,393,663)	Ps	50,353,003

(*) The most significant additions includes: a) Improvements in the installation of the Terminal 3 building at Cancún Airport; b) Construction of the new Terminal 4 building at Cancún Airport; c) Supply and installation of passenger boarding bridges in the Terminals 3 and 4 buildings; d) Expansion of the commercial platform of the Terminal 3 building; e) Construction of earth fills and pavement for the Terminal 4 platform, and f) Construction of wheel treads, connector, and headrests in Cancún Airport.

As a result of the acquisition of Aerostar, an intangible asset was identified for the commercial rights acquired for an amount of Ps.6,053,820, which represent the rights to commercially explore the airport areas in addition to the aeronautical operation, that is, leases to commercial premises, commercial stores and advertisements.

The expense for amortization of concessions in the amount of Ps.1,130,481 (Ps.463,464 and Ps.524,297 in 2015 and 2016, respectively) has been charged to the cost of aeronautical and non-aeronautical services, this amount includes the amortization of commercial rights of Ps 98,780, recognized by the valuation of its investment in accordance with IFRS 3 “Business combinations”.

The expense for amortization of licenses and direct commercial operations (ODC by its initials in Spanish) in the amount of Ps.12,730 (Ps.10,581 and Ps.12,554 in 2015 and 2016, respectively) has been charged to administrative expenses.

The amortization expense of the Aerostar concessions by Ps.422,305 has been charged to the cost of aeronautical and non-aeronautical services.

The amortization expense of the Airplan concessions by Ps.54,823 has been charged to the cost of aeronautical and non-aeronautical services.

8.1) Impairment testing of goodwill

The Administration reviews the performance of the business based on a segmentation of its subsidiaries based on its geography.

Goodwill is assigned to the operating segments that are expected to benefit from the synergies of the business combination, regardless of whether other assets or liabilities of the acquired entities are assigned. The following is a summary of the allocation of goodwill for each operating segment

	2017
Aerostar Net Goodwill	Ps	887,169
Airplan Goodwill (Note 1)		1,474,955
	Ps	2,362,124

Significant estimate - Impairment:

As a result of the passage of Hurricane Maria on the island of Puerto Rico on September 20, 2017, which affected the infrastructure of the LMM airport as well as causing severe damage to the rest of the island that impacted the expected future flows of Aerostar the Company recognized an impairment of Ps.4,719,096 in cost of aeronautical and non-aeronautical services within operating costs and expenses. As a result of the above, the Administration also carried out impairment tests on the intangible asset of the concession, without determining a deterioration to be recognized. Remaining a net effect, as shown below:

	2017
Aerostar Goodwill (Note 1)	Ps	5,606,265
Goodwill Impairment		(4,719,096)
	Ps	887,169

Methodology:

Aerostar and Airplan.- The Company's Management performed the calculation based on the fair value less costs to sell and the value in use, in accordance with the methodologies established in IAS 36, derived from the above, took into account the most high. In this case, the Company chose the fair value less costs to sell. The method for determining this was discounted cash flows.

For the determination of fair value less costs to sell, projections of cash flows approved by the Administration are used, covering a period of 36 years in the case of Aerostar and 15 years in the case of Airplan, which are the remaining years of the airport concessions. For each CGU with a significant amount of goodwill, the key assumptions are the following:

	2017
	Airplan			Aerostar
Discount rate		10.07	%		10.00	%
Discount rate for the value in use method		15.12	%		11.75	%
Annual average of revenue growth		2.00	%		3.47	%
Level of the fair value hierarchy of value
recoverable from the CGU		3			3

Management has determined the values assigned to each of the above key assumptions as follows:

Assumptions	Approach used to determine the values
Discount rate	It reflects the specific risks related to the market rates of the industry and the countries in which they operate.
Annual average of revenue growth	Weighted average growth rate during the period of the concessions, on which historical trends of national and international passengers are based.

CGU Aerostar:

If the discount rate applied to the cash flow projections of this CGU would have been + 1% or -1%, Management's estimate would have to recognize the following additional effects of Ps.1,525,824 (11.93% instead of 10.93%), and in the case of the decrease in the rate (Ps.1,827,599) lower than the amount recognized as impairment (9.93% instead of 10.93%), in the latter case the Company would not have to recognize any impairment..

CGU Airplan:

If the discount rate applied to the cash flow projections of this CGU would have been + 1% or -1%, the Administration's estimate would have the following effects (11.07% instead of 10.07%), and in this case the excess of the fair value in relation to its book value would be shortened by Ps.394, and in the case of a decrease in the rate the excess would be increased by Ps.430 (9.07% instead of 10.07%), in none of the cases would there be any effects for deterioration.

In the previous year there were no reasonably possible changes in any of the key assumptions that make us assume that there will be no changes in the assumptions that could significantly impact the projections made by the Company.

8.2) Basic terms and conditions of the concessions

Mexico:

The basic terms and conditions of each concession are the following:

a) The concession holder must undertake the construction, improvement and maintenance of the facilities in accordance with its Master Development Plan (MDP) and is required to update the plan every five years. See Note 16.

b) The concession holder may only use the airport facilities for the purposes specified in the concession and must provide services in accordance with all applicable laws and regulations, and is subject to statutory oversight by the SCT.

c) The concession holder shall pay a DUAC (currently 5% of the gross income of the concession holder, resulting from the use of public assets in accordance with the terms of the concessions) as required by the applicable law. DUAC is presented in the consolidated statement of income under “Cost of aeronautical services”. See Note 4.

d) Fuel services and fuel supply are to be provided by the Mexican Airport and Auxiliary Services Agency, a Decentralized Public Entity.

e) The concession holder must grant access to and the use of specific areas of the airport to government agencies to perform their activities inside the airports.

f) The concession may be terminated if the concession holder fails to comply with certain of the obligations imposed by the concession as established in Article 27 or for the reasons specified in Article 26 of the Airport Law.

g) Revenues resulting from the concession are regulated and subject to a review process. See note 19.1.3.

h) The terms and conditions of the regulations governing the operations of the Company may be modified by the SCT.

Aerostar:

The purpose of the Aerostar concession (Agreement) is to operate the public airport safely by maintaining the highest possible levels of safety and security at the LMM Airport, and promoting, facilitating and improving commerce, tourism and economic development. The Puerto Rico authorities, Aerostar and the other airlines have agreed to the terms and conditions of the LMM Airport Facility Contract. The concession period is 40 years as of the closing of the agreement assigning the Airport's operating rights (February 27, 2013).

Under the Agreement, Aerostar has no rights to control in full the use of the Airport facilities, and it is required to provide certain maintenance services within the airport.

As part of the Agreement, the authorities grant Aerostar the right to sublease the LMM Airport non-aeronautical areas and to collect and retain the fees, charges and payments and income arising from all subleased facilities.

According to the provisions of the Agreement, the Company has the right to collect the annual contributions of all airlines, which will be equal to the sum of the: a) platform use fees; b) landing fees; c) other leases, and d) international and domestic airport use fees.

The Agreement requires Aerostar to make a cash payment of USD2.5 million (Ps.49.15 million at an exchange rate of Ps.19.66) per year for the first five years after the first five years, the authority establishes a payment of "Annual Authority Income Share", consisting of 5 % of the gross revenues of the airport obtained by Aerostar from the sixth year to the thirtieth year. From year 31 to 40, this amount will increase to 10% of the airport's gross revenues.

Airplan:

The object of the concession contract 8000011-0K is the granting by the Aerocivil in favor of Airplan of the concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the airports Antonio Roldán Betancourt, El Caraño, José María Córdova. Las Brujas and Los Garzones, and the granting by Olaya Herrera Airport – Public Authority in favor of the concessionaire of the concession for the administration, commercial operation, adaptation, modernization and maintenance of Enrique Olaya Herrera Airport.

The term of execution of the contract extends from the date of signing of the act of commencement of execution and until the date on which one of any of the following events occurs:

· That the regulated revenues generated are equal to the expected regulated revenues, provided that by that time 15 years have elapsed from the date of execution of the certificate of commencement of execution.

· That 25 years have elapsed since the date of execution of the execution start certificate regardless of whether, for the time being, regulated revenues generated have not matched the value of the expected regulated revenues.

· If the regulated income generated equals the expected regulated revenue before 15 years have elapsed from the date of execution of the certificate of commencement of execution, the duration of execution of the certificate of commencement of execution and during this term the concessionaire must execute all the obligations under his charge under the concession contract.

It must be taken into account, for purposes of the regulated revenue expected as defined in the concession contract, that the expected regulated revenue will increase once each of the complementary works (mandatory or voluntary) is delivered to the grantor. As of December 31, 2017, the expected regulated income adjusted for complementary works is Ps.14,294,642.

The grantors agree to assign the regulated and unregulated revenues corresponding to each of the airports to Airplan. The concessionaire will obtain all of its remuneration for the concession only of the assignment of the regulated revenues and of the unregulated revenues that the concessionaires make in their favor.

The concessionaire is obliged, with the grantor to pay, during the term of the contract, a consideration equivalent to 19% of the gross income of the concessionaire.

The concession granted by virtue of this contract imposes on the concessionaire the general obligation to administer, make commercial use and operate the airports in accordance with the minimum specifications set forth in the contract and at their own risk.

The determination of the economic useful life of the intangible is subject to the percentage of execution of the revenues with respect to the total expected income of the financial model that the Company has.

Fiduciaria Bancolombia Contract

On June 25, 2008, in accordance with the concession agreement, for the administration of the resources of the concession and the payment of the obligations in the charge of the concessionaire, Airplan was required to enter into a trust agreement with Fiduciaria Bancolombia as trustee, to which it transfers all of the gross income received and all the debt and capital resources it obtains for the execution of the concession.

The trustee will maintain, in accordance with current accounting standards, a record of each and every one of the payments and transfers that are made to third parties or to the concessionaire itself with charge to any of the accounts of the trust. The foregoing without prejudice to understand that the assignment of regulated income and non any other earnings treated as non regulated income that is managed by the trustee is made in favor of Airplan and not the trust and that the debt and capital resources obtained by the Concessionaire should be adequately recorded as such in its own accounting and only kept for record purposes in the trust, since it is constituted solely for purposes of the administration of resources.

The constitution of the trust was made through the execution of an irrevocable mercantile trust and administration agreement, which shall remain for the time equal to that of the concession agreements, provided that it does not exceed the maximum of 20 years established in the Colombian Commercial Code.

8.3) Subsequent measurement of the intangible asset

The Company will subsequently measure the intangible asset over its economic useful life at cost, less accumulated amortization and impairment loss.

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Investment in joint ventures accounted for under the equity method:

12 Months Ended

Dec. 31, 2017

Disclosure of joint ventures [abstract]

Disclosure of joint ventures [text block]

Note 9 - Investment in joint ventures accounted for under the equity method:

Operational background

In 2013, the Company participated in a bidding process through its subsidiary, Aeropuerto de Cancún, S. A. de C. V. (Cancún) for a long-term lease agreement to operate and administer the LMM Airport located in San Juan, Puerto Rico.

The investment between Highstar Capital IV (Highstar) and Cancún, created Aerostar Airport Holdings, LLC (Aerostar). It was determined that operations of Aerostar constitute a Joint Venture. Aerostar signed a 40-year lease agreement to operate the LMM Airport. As part of the bidding terms, Aerostar made an initial payment of USD615 million (Ps.7,846 million pesos approximately) to the Puerto Rico authorities. A portion of that payment was funded by a private placement of bonds by Aerostar in the amount of USD350 million (Ps.4,471 million pesos approximately) in the same year of acquisition of the concession.

Nature of the investment in the Joint Business

Aerostar is a limited liability Company incorporated under the laws of Puerto Rico. It is mainly engaged in operating the facilities of the LMM Airport. Aeropuerto de Cancún, S. A. de C. V. holds 60% in the ownership interest of Aerostar (50% until May 26, 2017) and the Public Sector Pension Investment Board “PSP Investments” own the other 40% (until May 26, 2017 owned by Highstar Capital IV in 50%). See Note 1.

Passenger Installation Charges (PFC):

The United States Congress approved the “Aviation Safety and Capacity Expansion Act.” in which it authorizes United States airports to impose a Passenger Installation Fee (PFC). PFCs can be used for airport projects that meet at least one of the following criteria: preserve or improve the security, protection or capacity of the national air transport system; reduce noise or mitigate noise resulting from an airport; or provide opportunities for increased competition between airlines. PFC revenues and accrued interest are restricted for use in capital projects approved by the FAA and are classified as restricted cash. See Note 5. For the period from June 1 to December 31, 2017, revenues collected by PFC were Ps.191,356.

As of June 1, 2017, Aerostar consolidates its shareholding as a subsidiary in the Company, increasing its shareholding from 50% to 60%, for which the recognition as a Joint-venture is until May 26, 2017.

CONDENSED STATEMENT OF FINANCIAL POSITION

	December 31,		May 26,
	2016		2017
Cash and cash equivalents	Ps	719,254	Ps	543,242
Restricted cash and cash equivalents		21,044		16,989
Other current assets		201,992		142,410
Current assets		942,290		702,641
Financial liabilities		(92,367)
Other current liabilities		(615,709)		(647,896)
Current liabilities		(708,076)		(647,896)
Working capital		234,214		547,452
Land, furniture and equipment		152,758		135,373
Intangible assets, airport concessions - Net		14,661,436		13,254,582
Other non-current assets		571		556
Non-current assets		14,814,765		13,390,511
Long term debt		(7,693,682)		(6,824,310)
Loan payable to the Company (Note 13.1)		(1,886,546)		(1,430,310)
Other non-current liabilities		(265,040)		(286,325)
Deferred taxes – Net		(225,107)		(203,502)
Non-current liabilities		(10,070,375)		(8,744,447)
Stockholders’ equity	Ps	4,978,604	Ps	4,700,809

CONDENSED STATEMENT OF COMPREHENSIVE INCOME

					Period from
	For the year ended				January 1,
	on December 31,				to May 26,
	2015		2016		2017
Total revenue	Ps	2,049,611	Ps	2,526,371	Ps	1,170,888
Operating costs and expenses		(1,456,915)		(1,650,890)		(694,435)
Comprehensive financing loss - Net		(444,726)		(535,053)		(229,789)
Deferred income taxes		(46,124)		(51,931)		(21,974)
Net income for the period		101,846		288,497		224,690
Effect for foreign currency conversion		545,514		800,692		(475,233)
Comprehensive income	Ps	647,360	Ps	1,089,189	Ps	(250,543)

Reconciliation of condensed financial information

	December 31,			May 26,
	2016			2017
Initial capital contribution to Aerostar	Ps	3,016,003		Ps	3,016,003
Accumulated earnings (deficit)		(112,162)			176,335
Net income for the period		288,497			224,690
Other accumulated comprehensive income		985,574			1,786,266
Other comprehensive income		800,692			(502,485)
Net assets at period closing		4,978,604			4,700,809
Equity percentage in joint business		50	%		50	%
Carrying value	Ps	2,489,302		Ps	2,340,405

				From January  1st
	December 31,			to May 26,
	2016			2017
Net income for the period	Ps	288,497		Ps	224,690
Equity percentage in joint venture		50	%		50	%
Equity method income	Ps	144,248		Ps	112,345

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Accounts payable and accrued expenses:

12 Months Ended

Dec. 31, 2017

Trade and other payables [abstract]

Disclosure of trade and other payables [text block]

Note 10 - Accounts payable and accrued expenses:

At December 31, 2016 and 2017, the balances are as follows:

	December 31,
	2016		2017
Suppliers	Ps	11,401	Ps	428,881
Taxes payable		116,643		157,387
Use rights of assets under concession		109,437		127,076
Accounts payable to related parties (Note 15.1)		71,725		87,951
Salaries payable		71,022		111,984
Sundry creditors for services provided		94,349		583,059
Interest payable of the Bank Loans (Note 12)				340,288
Accounts payable to contractors		657		265,236
Total	Ps	475,234	Ps	2,101,862

Due to the fact that these accounts mature at a term of under one year, their fair value is considered to approximate their book value.

XML

Bank loans:

12 Months Ended

Dec. 31, 2017

Disclosure of loans and advances to banks [Abstract]

Disclosure of loans and advances to banks [text block]

Note 11 - Bank loans:

At December 31, 2017, the Company has used the total amount of these credit lines as shown below:

									Term
	Credit line		Credit line		Principal		Commissions and						Fair
Bank	foreign currency		used in pesos		amortization		interests - Net		Short		Long		value
BBVA Bancomer, S. A. (*)			Ps	2,000,000	Ps		Ps	14,875	Ps	14,875	Ps	2,000,000	Ps	2,089,786
BBVA Bancomer, S. A				4,000,000		4,000,000
Santander				2,000,000				(10,576)		2,957		1,986,467		2,091,065
BBVA Bancomer, S. A. *	USD	72,500		1,425,560				3,215		5,675		1,423,100		1,540,499
Bank of America Merrill
Lynch (*)	USD	72,500		1,425,560				3,215		5,675		1,423,100		1,535,374
Total Mexico	USD	145,000	Ps	10,851,120	Ps.	4,000,000	Ps	10,729	Ps	29,182	Ps	6,832,667	Ps.	7,256,724
Bancolombia	COP	150,000,000		1,295,381				(2,595	Ps.	103,100	Ps.	1,189,686	Ps.	1,204,983
CorpBanca		102,000,000		718,021				(633)		2,840		810,284		819,389
Banco Bogotá		37,000,000		813,757				(1,047)		34,159		714,374		297,229
Banco Davivienda		90,000,000		328,112				(1,159)		2,488		292,905		722,990
Banco de Occidente		37,000,000		295,186				(1,258)		1,031		292,898		297,229
Banco Popular		8,000,000		63,824				(941)		369		62,514		64,266
Banco AV Villas		8,000,000		63,824				(49)		223		63,552		64,266
Serfinansa		8,000,000		63,824				(1,243)		79		62,502		64,266
Total Airplan	COP	440,000,000	Ps	3,641,929			Ps	(8,925)	Ps	144,289	Ps	3,488,715	Ps	3,534,614
			Ps	14,493,049	Ps	4,000,000	Ps	1,804	Ps.	173,471	Ps	10,321,382	Ps	10,791,338

^(*) The following variables were used to determine the fair values of the loans at December 31, 2017:

As a result of the business combination in Airplan on October 19, 2017, a fair value of the syndicated loan, valued at its amortized cost, was determined, increasing its value by Ps.605,382. See Note 1.

Mexico:

FRA LIBOR Curve 6months

FRA TIIE curve 28

LIBOR discount curve 3 months

Implicit curve weights

Probability of default ASUR

Airplan:

Spot rate (DTF) at the start date of each of the provisions

Colombia reference rate

Level 2 of fair value hierarchy.

At December 31, 2016, the Company used the total amount of these credits as shown below:

Term

Credit line

Credit line

Principal

Commissions and

Fair

Bank

used in dollars

used in pesos

amortization

interests - Net

Short

Long

value

BBVA Bancomer, S. A. (*)

USD

107,500

Ps

2,216,585

Ps

Ps

13,803

Ps

29,168

Ps

2,201,220

Ps

2,387,179

Bank of America Merrill

Lynch (*)

107,500

2,216,585

13,803

29,168

2,201,220

2,378,451

USD

215,000

Ps

4,433,170

Ps

Ps

27,606

Ps

58,336

Ps

4,402,440

Ps

4,765,630

⁽*⁾ The variables used to determine the fair values of loans are:

6-month LIBOR curve

LIBOR discount curve rating B

Credit risk of PIP credit curves

Additionally, the calculation is prepared on the basis of a Bloomberg LIBOR discount rate, with the fair value at hierarchy level 2.

Mexico:

On July 17, 2015, the Company agreed on several lines of credit with BBVA Bancomer and Bank of America Merrill Lynch in the amount of USD215 million (Ps.3,397.0 million at an exchange rate of Ps.15.80 as of July 17,2015). The loan will be amortized in nine payments, from July 2018 to July 2022. The loan was denominated in US dollars and was subject to LIBOR plus 1.85%. On November 16, 2017, the Company paid USD70 million (Ps.1,376.2 million at an exchange rate of Ps.19.66) toward the principal and canceled the remaining portion of the loan, in order to renegotiate new loans with both banks for USD72.5 million (Ps.1,425.3 million at an exchange rate of Ps.19.66) from each. The loans are for a five-years period and mature on November 16, 2022. The loans are denominated in US dollars and are subject to LIBOR plus a spread of 1.525% and LIBOR plus a spread of 1.45%, respectively.

The credit lines may be used for general corporate purposes and to finance capital expenditures related to the PMD. At December 31, 2017, the Company had not made capital payments.

On July 31, 2017, Cancún Airport entered into a loan with BBVA Bancomer in the amount of Ps 4,000 million. The term of the loan was one year, which would be amortized in a single payment on July 31, 2018. The loan was denominated in pesos and subject to the monthly rate TIIE plus 0.60% for the period of July 31 to October 31, 2017, TIIE plus 0.85% from October 31, 2017, to January 31, 2018, TIIE plus 1.10% from January 31 to April 30, 2018, and TIIE plus 1.60% from April 30 to July 31, 2018. The credit was used for general corporate purposes.

In October 2017, the Company restructured the debt with BBVA Bancomer, liquidating Ps 4,000 million, and incurring with the same institution a loan of Ps 2,000 million. The new loan is payable in seven years and will be paid in nine semiannual payments from October 2020 to October 2024 at the rate of 28-day TIIE plus 1.25 points.

In October 2017, the Company acquired a loan with Banco Santander of Ps 2,000 million. The term of the loan is five years, with maturity on October 27, 2022, and will be paid in one payment at the maturity date at the rate of 28 days TIIE plus 1.25 points.

Airplan:

On June 1, 2015, the Company incurrred a new long-term syndicated loan of COP440,000,000 Colombian pesos payable in 12 years with a three-year grace period for the payment of principal.

Financial obligations

Mexico:

Under the terms of the peso credit granted by BBVA Bancomer, the Company is required to maintain a level of consolidated leverage no greater than 3.5x, calculated as a total financial debt between the UAFIDA (pretax operating profit, the interest expense, plus depreciation, plus amortization at the consolidated level) for the 12 months prior to each quarter closing and minimum interest coverage ratio of 3.0x, calculated as the UAFIDA between financial expenses associated with the total financial debt for the twelve months preceding each quarter closing.

Under the terms of the peso credit granted by Santander, the Company is required to maintain a level of leverage on the last day of each fiscal quarter not greater than 3.5x and a minimum interest coverage ratio of 3.0x. Both ratios must be calculated for the 12 months prior to each quarter.

The Company must refrain from creating, incurring, assuming or generating any liens on its goods, assets and rights, and from assuming obligations on behalf of third parties, or from acting as guarantor or granting any type of real personal or fiduciary guarantees to secure obligations on its behalf or on the behalf of third parties that are relevant or may have a relevant adverse effect on the payment of the loan.

As part of the terms of the loan made by BBVA Bancomer and Bank of America Merrill Lynch, the Company and its subsidiaries are required to keep a consolidated leverage level equal to or below 3.50:1.00 and a consolidated interest hedging index equal to or below 3.00:1.00 on the last day of each tax quarter. In the event of breach of the foregoing, the loan limits the capacity to pay dividends to the shareholders. Additionally, in the event of breach, all amounts due under the loan may be claimed and must be payable immediately.

During the term of the loan made by BBVA Bancomer and Merrill Lynch, the Company and its subsidiaries are not authorized to place a lien on any of the properties or sell any assets equivalent to more than 10% of the total assets consolidated in the most recent tax quarter prior to the sale or make any fundamental changes to the corporate structure..

Airplan:

The Company is obligated throughout the term of the credit to comply with the following financial commitments:

Maintain long-term financial indebtedness limited to this syndicated loan operation: This consists of the sum of the balances payable by the debtor during the term of the syndicated loan, as a result of long- and short-term financial indebtedness, the amount of which may not exceed the sum of COP$440,000,000 Colombian pesos.

Maintain the capital structure: This addresses the relationship between capital and debt that the debtor must meet in relation to the project throughout the term of the loan, in such a way that the result of the financial indicator Capital 1 (Capital + debt) is equal to or higher than 16%.

Maintain the index of debt coverage: This refers to the indicator that the debtor must maintain during the entire term of the loan, defined as: EBITDA - Taxes / Debt service 2: 1.2.

The Company is in compliance with the financial obligations and clauses of all loans at December 31, 2017 and 2016.

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Long term debt:

12 Months Ended

Dec. 31, 2017

Borrowings [abstract]

Disclosure of borrowings [text block]

Note 12 - Long term debt:

As of June 1, 2017, Aerostar consolidates as a subsidiary in the Company by Cancún Airport increasing its shareholding in Aerostar from 50% to 60%, and thus obtaining control.

To finance a portion of the agreement payment to the Puerto Rico Authority, and certain other costs and expenditures associated with it, Aerostar into a Note Purchase Agreement in March 22, 2013, where Aerostar authorized the issue of subordinated bonds and sale of an aggregate principal of Ps.4,471 million mexican pesos (USD350 million) of its 5.75% senior secured notes due on March 22, 2035.

Performance	2.39	%
Spread credit (bps)	+336
Coupon	5.75	%

On June 24, 2015, Aerostar signed an agreement for private placement of bonds in the amount of $737 million pesos (USD50 million), maturing on March 22, 2035, based on the following conditions:

Performance 6.75 %

The integration of the debt is shown as follows:

Term

Credit line

Interest

Credit line

Interest

Fair

used in USD

in USD

in pesos

in pesos

Short

Long

Value

Loan

USD

400,000

USD

6,444

Ps

7,489,465

Ps

126,712

Ps

340,288

Ps

7,149,177

Ps

6,766,798

Corporate risk through Yield to Maturity of comparable bonds of the “Transportations and Logistics” sector.

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Stockholders' Equity:

12 Months Ended

Dec. 31, 2017

Share capital, reserves and other equity interest [Abstract]

Disclosure of share capital, reserves and other equity interest [text block]

Note 13 - Stockholders’ Equity:

At December 31, 2017 and 2016, the minimum fixed capital with no withdrawal rights is of Ps.1,000 and the variable portion is of Ps7,766,276, (nominal figure) comprised of 300,000,000 common, nominative Class I shares no par value, wholly subscribed and paid in. The variable portion of capital stock is comprised of Class II common, nominative shares. At December 31, 2017, no Class II shares have been issued. Both classes of shares will have the characteristics determined at the Shareholders’ meeting where issuance is approved and they are integrated as follows:

	Total shares				Capital Stock as of
					December 31,
Description	2016		2017		2016		2017
B Series		277,050,000		277,050,000	Ps	7,173,079	Ps	7,173,079
BB Series		22,950,000		22,950,000		594,197		594,197
Total		300,000,000		300,000,000	Ps	7,767,276	Ps	7,767,276

Legal reserve

The Company is legally required to allocate at least 5% of its unconsolidated annual net income to a legal reserve fund. This allocation must continue until the reserve is equal to 20% of the issued and outstanding capital stock of the Company. Mexican corporations may only pay dividends on retained earnings after the reserve fund for the year has been set up.

Reserve for acquisition of shares

The reserve for acquisition

of shares represents the reservation authorized by the Stockholders for the Company to purchase its own shares subject to certain criteria set forth in the bylaws and the Securities Market Law. At December 31, 2016 and 2017, the reserve for repurchase of shares totals Ps.5,045,254 and Ps.7,052,635, respectively.

Dividends

At the April 26, 2017 General Ordinary Stockholders’ meeting, the Company's stockholders agreed to pay net dividends of Ps.1,848,000 (nominal), which don’t gave rise to IT because the dividends were paid from the After-tax Earnings Account (CUFIN, by its initials in Spanish).

At the April 26, 2016 General Ordinary Stockholders’ meeting, the Company's stockholders agreed to pay net dividends of Ps.1,683,000 (nominal), which don’t gave rise to IT because the dividends were paid from the CUFIN.

Dividends are tax free if paid from the CUFIN. Dividends paid in excess of the CUFIN balances are subject to tax equivalent to 42.85% beginning on January 1, 2017. Tax due is payable by the Company and may be credited against Income Tax for the year or Income Tax for the two immediately following fiscal years. Dividends paid from previously taxed earnings are not subject to tax withholding or payment. At December 31, 2017 and 2016, the companies CUFIN lump sum is Ps.8,951,912 and Ps.6,114,939, respectively, whereas the combined contribution capital account amounts Ps.39,689,426 and Ps.37,172,825, respectively.

The incentive is applicable provided that such dividends or profits were generated in 2016 and 2017 and are reinvested in the legal entity that generated such profits. The incentive consists of a tax credit equal to the amount obtained by applying the dividend or utility is distributed, which corresponds to a yearly percentage distribution as follows:

Year of dividend or profit distribution	Percentage applicable to the amount of the dividend or distributed profit (%)
2017	1
2018	2
2019 onwards	5

The resulting tax credit determined will only be creditable against the additional 10% income tax that the legal entity must withhold and pay, provided that all the requirements are met as set forth in the Income Tax Law (IT Law) itself.

In the event of a capital reduction, any excess of stockholders’ equity over paid-in capital contribution account balances is accorded the same tax treatment as dividends, in accordance with the procedures provided for in the IT Law.

Retained earnings

Substantially, all consolidated Company earnings were generated by its Subsidiaries. Retained earnings can be distributed to the Company's Shareholders to the extent that the Subsidiaries have distributed earnings to the Company.

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Income tax incurred and deferred:

12 Months Ended

Dec. 31, 2017

Income taxes [Abstract]

Disclosure of income tax [text block]

Note 14 - Income tax incurred and deferred:

a. Income Tax (IT)

Mexico:

In 2016 and 2017, the Company determined tax profits in its subsidiaries in the amounts of Ps5,051,189 and Ps.6,358,687, respectively. In 2017 and 2016, the tax profits were partially offset with the amortization of tax losses in the amounts of Ps.93,975 and Ps.86,083, respectively.

At December 31, 2016 and 2017, the subsidiaries that have not been assessed income tax due to the tax loss carryforwards, are Cozumel, Minatitlan and Tapachula.

Taxable income differs from book income due to temporary and permanent differences arising from the different bases for the recognition of the effects of inflation for tax purposes and from the permanent effects of items affecting only the book or tax results.

The IT Law establishes for 2014 and subsequent years an income tax rate of 30%.

The Company has performed the evaluation of the Preferential Tax Regimes and has determined that this year it is not applicable because it does carry out a business activity, in the case of the investment in the airport of Puerto Rico, and that passive income does not represent more than 20% of its total income

Aerostar:

The Company determined tax loss in Puerto Rico for Ps.77,551, derived from the agreement with the Department of the Treasury of Puerto Rico in which its operations are subject to income taxes of Puerto Rico of 10% under the provisions of Section 12 (a) of the Public Private Partnership Law (Law) enacted in June 2009. Derived from the analysis carried out by the Administration, it is considered that there are no impacts due to changes in the legislation of the United States of America made since the 2018 fiscal year.

Airplan:

The Company determined taxable income in accordance with the tax law of Colombia for the period from October 19, to December 31, 2017 of Ps.48,877, and a presumptive income on liquid equity, which results from applying the 3% rate on the fiscal liquid equity of the previous year, of Ps.23,462 annual.

The Company is subject to income taxes in Colombia of 34% plus a 6% surcharge on liquid income less COP800,000. The Company determined an income tax of Ps.16,618 and an additional surcharge tax of Ps.2,933 for the aforementioned period.

Law 1739 of December 23, 2014 in force, establishes the determination and payment of a surcharge on income tax for equity - CREE, which is the responsibility of the taxpayers of this tax and applies to a taxable base higher than the COP800,000, which is equivalent to 6%.

The tax reform establishes that the tax rate applicable for the year 2018 and subsequent years is 33% of the taxable income.

The analysis of deferred tax assets and liabilities is as follows:

	December 31,
Deferred tax asset:	2016		2017
Deferred tax recoverable within the following 12 months	Ps	30,615	Ps	73,710
Deferred tax recoverable after 12 months		33,930		253,010
Recoverable asset tax		152,785
		217,330		327,020
Deferred tax liability:
Deferred tax payable after 12 months		(1,673,350)		(3,360,950)
Deferred tax liability - Net	Ps	(1,456,020)	Ps	(3,033,930)

The IT provision at December 31, 2015, 2016 and 2017 is as follows:

Mexico:

	2015		2016		2017
Current IT	Ps	1,198,273	Ps	1,502,976	Ps	1,908,646
Deferred IT		(103,410)		(101,792)		(312,091)
IT provision	Ps	1,094,863	Ps	1,401,184	Ps	1,596,555
Aerostar:
IT deferred for the period from June 1
to December 31, 2017	Ps		Ps		Ps	28,678
Airplan:
Current IT	Ps		Ps		Ps	19,551
Deferred IT						(9,337)
IT Provision Airplan for the period
October 19, to December 31, 2017	Ps		Ps		Ps	10,214
Total IT provision	Ps	1,094,863	Ps	1,401,184	Ps	1,635,447

The reconciliation between the statutory and effective income tax rates is shown below:

	2015			2016			2017
Consolidated income before IT and joint venture equity method:	Ps	3,962,934		Ps	4,887,130		Ps	8,498,889
Plus (Less):
Net income before taxes of Airplan and Aerostar		16,011
Net income before taxes of subsidiaries in Mexico not subject to IT		(118,981)			(56,415)			(62,327)
Income before provisions for income taxes		3,843,953			4,830,715			8,452,573
Statutory IT rate		30	%		30	%		30	%
IT that would result from applying the IT rate to book profit before income taxes		1,153,186			1,449,214			2,535,772
Non-deductible items and other permanent differences		8,095			11,908			8,693
Gain on business combination		(2,108,760)
Goodwill impairment		1,415,729
Annual adjustment for tax inflation		(10,924)			(10,974)			(2,406)
Temporary differences		(56,156)			(91,928)			(249,336)
Recognition of deferred income tax at the Huatulco Airport (1)					44,020
Initial recognition for deferred IT consolidation in Aerostar (2)								28,678
Initial recognition for IT consolidation in Airplan (2)								10,214
Other		662			(1,056)			(3,137)
IT provision	Ps	1,094,863		Ps	1,401,184		Ps	1,635,447
Effective ISR rate		28	%		29	%		19	%

⁽¹⁾ Based on the tax projections at December 31, 2016, the Huatulco Airport is expected to pay income tax in the future. Accordingly, the Company decided to recognize deferred income tax. This recognition increased the effective rate by 3%.

⁽²⁾ As of June 1, 2017, Aerostar consolidates into the Company and as of October 19, 2017, Airplan consolidates financially into the Company.

Following are the principal temporary differences with respect to deferred tax:

	Period ended on
	December 31,
	2016		2017
Current deferred income tax:
Advances (Airplan)	Ps		Ps	25,271
Accrued liabilities		30,615		48,439
Current deferred income tax asset		30,615		73,710
Non-current deferred income tax:
Bank loan’s fair value		208,394
Allowance for doubtful accounting		33,930		44,916
Non-current deferred income tax asset		33,930		253,310
Deferred income tax asset		64,545		327,020
Non-current deferred income tax liability:
Fixed assets and concession (*)		(1,672,641)		(2,900,893)
Deferred income (Airplan)				(458,682)
Amortization of deferred expenses		(709)		(1,375)
Non-current deferred income tax liability		(1,673,350)		(3,360,950)
Total deferred income tax, net		(1,608,805)		(3,033,930)
Recoverable asset tax		152,785
Deferred income tax liability, net	Ps	(1,456,020)	Ps	(3,003,930)

At June 1, 2017, and October 19, 2017, Aerostar and Airplan consolidated into the Company, respectively, with an initial recognition for deferred tax liabilities of Ps.808,894 and Ps.861,483, respectively, due to the temporary difference between accounting and tax amortization rates.

^(*) Includes Ps.267,307 and Ps.357,563 from Aerostar and Airplan only in, 2017.

The net movements of the deferred tax asset and liability for the year are as follows:

	Provision
	for loan				Recoverable		Foreign
	portfolio		Concessioned		asset		currency
	impairment		assets		tax		translarion		Other		Total
Balances at December 31, 2015	Ps	(31,576)	Ps	1,766,981	Ps	(186,875)	Ps		Ps	(24,808)	Ps	1,523,722
Recovery of asset tax						34,090						34,090
Tax charged or credited in the
statement of income		(2,354)		(94,340)						(5,098)		(101,792)
		(2,354)		(94,340)		34,090				(5,098)		(67,702)
Balances at December 31, 2016		(33,930)		1,672,641		(152,785)				(29,906)		1,456,020
Recovery of asset tax						152,785						152,785
Initial recognition of Aerostar				203,512								203,512
Initial valuation in Aerostar
investment				605,382								605,382
Net assets acquired under
the business combination of Airplan				281,899								281,899
Effect of foreign currency
translation Aerostar								35,117				35,117
Initial recognition of Airplan				356,296						223,289		579,585
Effect of foreign currency
translation Airplan								7,458		4,922		12,380
				1,447,089		152,785		42,575		228,211		1,870,660
Tax charged or credited in the
statement of income:
Airplan				(6,191)						(3,146)		(9,337)
Aerostar				28,678								28,678
Mexico		(10,986)		(283,899)		-				(17,206)		(312,091)
		(10,986)		(261,412)		-				(20,352)		(292,750)
Balances at December 31, 2017	Ps	(44,916)	Ps	2,858,318	Ps	-	Ps	42,575	Ps	177,953	Ps	3,033,930

b. Return of Asset Tax (AT) in accordance with the Law on Flat Rate Business Tax (LIETU) in Mexico.

AT in excess of IT effectively paid until December 31, 2007, (date on which AT was repealed) is subject to refund in accordance with the procedure established in the Flat Tax Law in the following ten periods up to 10% of the total AT paid and not yet recovered, without it exceeding the difference between the IT paid in the period and the AT paid in the previous three years, whichever is lower, in accordance with the Flat Tax Law, when IT incurred is higher than AT in any of those years, and it is subject to restatement through the application of “National Index Consumer Prices” Mexican factors. The last year that the AT can be recovered is 2017.

In 2017 the Company recovered AT of Ps.211,675 and Ps.50,716 in 2016, with recognition in the results of 2017 as income Ps.58,890.

In 2015, 2016 and 2017, AT of Ps.5,259, Ps.932 and Ps.932, respectively, was applied in the results for the period under income taxes in favor of some subsidiaries in which the tax will not be recoverable in accordance with the procedure established in the Flat Tax Law, which establishes that the tax is recoverable gradually every year up to a maximum of 10% of the total AT paid in the 10 years prior to 2008.

Recoverable taxes

At December 31, 2016 and 2017, the tax credits are as follows:

	December 31,
	2016		2017
Income tax	Ps	101,664	Ps	74,885
Asset tax (*)		10,074		8,006
	Ps	111,738	Ps	82,891

(*) The balance as of December 31, 2017, was requested in return, at the date of this financial statements issuance said balance has not yet been recovered.

Aerostar Tax loss Carry forwards:

At December 31, 2017, the Aerostar had cumulative tax loss carry forwards whose right to be amortized against future taxable income expires as shown below:

					Year of
Year of loss					expiration
2012	USD	9,201	Ps.	180,892	2027
2013		52,946		1,040,916	2028
2014		33,424		657,116	2029
2015		44,188		868,736	2030
2016		58,365		1,147,456	2031
Total	USD	198,124	Ps.	3,895,118

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Balances and transactions with related parties:

12 Months Ended

Dec. 31, 2017

Disclosure of transactions between related parties [abstract]

Disclosure of related party [text block]

Note 15 - Balances and transactions with related parties:

In 2007, an agreement was entered into by Grupo Aeroportuario del Sureste, S. A. B. de C. V., individual (GAS) and subsidiaries whereby GAS, being jointly liable for the obligations of each of the concessions of the subsidiaries, is able to contribute to the rehabilitation of its finances. The contributions are for the compliance of the commitments established in the Master Development Plan and are made with the objective of fulfilling the operating expenses and investments of the subsidiaries that they cannot pay on their own. In accordance with said agreement, the subsidiaries are obligated to perform a monthly payment to GAS based on its economic capabilities and the financial requirements of the subsidiaries. These transactions have been eliminated from these consolidated financial statements.

In 2008, an agreement between GAS and the subsidiaries was made for use of licenses and trademarks, whereby GAS agrees to the payment of a fee for annual royalties, provided that they have positive financial results and sufficient funding so as not to affect compliance with the investment commitments set forth in the Master Development Plan. The respective compensation will be determined by applying a percentage to the gross income without including the interest in subsidiaries, financial products and exchange gains. This contract has a duration of 10 years, counted as of the signing thereof.

In 2008, the airports of the Company and Cancún Airport Services, S. A. de C. V. entered into a lease agreement in order for the latter to operate, administer and lease the commercial spaces that were granted by the Airports.

The above contracts are related party contracts that have been eliminated in the consolidated financial statements.

15.1) Balances receivable and payable

At December 31, 2016 and 2017, respectively, the balances receivable from (payable to) related parties shown in the consolidated statement of financial position are comprised as follows:

	2016		2017
Accounts receivable:
(*) Aerostar (joint venture/loan) (Notes 6)	Ps	1,886,546	Ps
Autobuses de Oriente ADO, S. A. de C. V. (Shareholder/services)				47
Autobuses Golfo Pacífico, S. A. de C. V. (Shareholder/services)				390
	Ps	1,886,546	Ps	437
(**) Accounts payable and accumulated expenses (Note 10):
Inversiones y Técnicas Aeroportuarias, S. A. de C. V.
(Shareholder/technical assistance)	Ps	(71,837)	Ps	(82,771)
CAH Colombia, S. A. (Shareholder/technical assistance)				(4,133)
Lava Tap de Chiapas, S. A. de C. V.
(Key Management personnel/services)		(338)		(1,047)
		(71,725)		(87,951)
Net	Ps	1,814,821	Ps	(87,514)

(*) At December 31, 2016, the amount of the loan were Ps.1,874,129 plus Ps12,417 due to interest accrued on the year. In 2016 and 2017 the capital was paid in the amount of Ps.325,693 and Ps.304,564, respectively.

⁽**⁾ These are accounts with terms of less than one year under similar market conditions.

15.2) Transactions with related parties

At December 31, 2015, 2016 and 2017, the following transactions were held with related parties, which were set at the same prices and conditions as those that would have been used in comparable operations by third parties:

	2015		2016		2017
Commercial income:
Autobuses de Oriente, S. A. de C. V. (Stockholder)	Ps	8,274	Ps	9,615	Ps	11,770
Autobuses Golfo Pacífico, S. A. de C. V. (Stockholder)		5,560		5,947		6,382
Coordinados de Mexico de Oriente, S. A. de C. V.
(Stockholder)		141		134		139
Interest income:
Aerostar (joint venture) (Note 8)		65,705		83,483		69,202
Expenses:
Stockholders:
Technical assistance (Note 13.4)		(239,175)		(288,111)		(346,487)
Related parties:
Administrative services
Leasing		(4,084)		(4,825)		(5,019)
Cleaning services		(9,084)		(9,541)		(10,239)
Other		(1,006)		(2,473)		(598)

15.3) Compensation of key personnel

Key personnel include directors, members of the Steering Committee, and Committees. In the years ended on December 31, 2015, 2016 and 2017, the Company granted the following benefits to the key Management personnel, the Steering Committee and the different Company Committees:

	2015		2016		2017
Short term salaries and other benefits paid to key
Personnel	Ps	34,693	Ps	40,062	Ps	84,642
Fees paid to the Board of Directors and Committees		5,975		4,766		4,974

^(*) In 2017, includes cost of Ps.34,879 and Ps.3,268, respectively by key personnel of directors of Aerostar and Airplan, who as of June 1, 2017 and October 19, 2017, respectively, were consolidated into the Company.

15.4) Technical assistance agreement

With regard to the sale of series BB shares to Inversiones y Técnicas Aeroportuarias, S. A. de C. V., (ITA) held in 1998, the Company signed a technical assistance agreement with ITA, whereby the latter Company and its stockholders agreed to provide Management and consulting services and transfer knowledge and experience in the industry and technology to the Company in exchange for compensation.

The agreement is for an initial term of 15 years and renews automatically for subsequent five year periods, unless one of the parties issues the other a cancellation notice within a determined term prior to the programmed expiration date. The Company can only exercise its termination right through a resolution of the Shareholders. ITA began to provide its services under said contract on April 19, 1999.

In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2 million (Ps41.2 million pesos).

The minimum fixed amount will increase annually by the inflation rate of the United States plus the added value tax over the amount of the payment. The Company entered into an amendment agreement for technical assistance and the transfer of knowledge, which establishes that the compensation will be paid on a quarterly basis beginning in January 1, 2008, and that such payments are to be deducted from the annual compensation.

At December 31, 2015, 2016 and 2017, the expenses for technical assistance amounted to Ps.239,175 Ps288,111 and Ps.344,487, respectively. ITA also has the right to refund the expenses incurred during the provision of the services specified in the agreement. The ITA BB series shares were put in a trust in order to ensure compliance with the technical assistance agreement, among other things.

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Commitments and contingencies:

12 Months Ended

Dec. 31, 2017

commitments and contingent liabilities [Abstract]

Disclosure of commitments and contingent liabilities [text block]

Note 16 - Commitments and contingencies:

Commitments

a. The Company began leasing office space on May 21, 2015, under an operating lease agreement. This agreement includes an available extension of 60 months. The monthly rent due is of USD21,547 (Ps444,000).

The total minimum future payments derived from the non-cancellable operating lease agreement that shall be covered in the future are as follows:

Up to one year	Ps	5,372
Between one and three years		10,745
Total	Ps	16,117

At December 31, 2015, 2016 and 2017, the rent expense embedded within the aeronautical and non-aeronautical service cost in the statement of income, was approximately of Ps.4,084, Ps.4,825 and, Ps.5,019 respectively.

b. On December 19, 2013, the Company received from the SCT approval of the Master Development Plan (MDP) for five years from 2014-2018, in which period the Company has agreed to make a number of enhancements. At December 31, 2016, the investment commitments under this MDP are as follows:

Period	Amount
2018	Ps	340,645	(1)

⁽¹⁾ Figures in pesos adjusted to December 31, 2017, based on the National Construction Price Index (IPCO, by its acronym in Spanish) in accordance with the terms of the MDP.

c. Pursuant to the terms for the purchase of the land in Huatulco that occurred in October 2008, the Company has the obligation to build 450 hotel rooms, for which purpose the Company will enter into agreements with third parties to develop the comprehensive tourism plan without a specific due date. At December 31, 2017, there is an indefinite extension to this commitment issued by FONATUR.

d. Capital projects and repair. As part of the Concession Agreement, Aerostar has committed to fund and complete certain capital and repair projects with respect to the LMM Airport Facilities. The Company has no time restrictions to complete these projects, except that they must be made at any time during the term of the lease. As these projects are carried out, repairs will be recorded as expenses incurred or capitalized and depreciated according to their nature; consistent with the Company's accounting policies. Capital projects will be capitalized as part of an intangible concession improvement asset and will be amortized over their useful lives or the remaining life of the concession contract, whichever is less. These projects include: the relocation of certain inspection facilities, repairs and improvements to parking garages, road signage, roof repairs, repair of certain aerodrome concrete surfaces, air conditioning improvements, restroom remodeling, extended sidewalk areas, public address systems, security plans and inspection services capacity. These commitments were excluded from the liability for initial obligations assumed due to factors of uncertainty, the variability of future costs and the extended period of time in which commitments can be fulfilled.

e. On September 20, 2017, Hurricane Maria made landfall on the island of Puerto Rico. Operations were suspended at the San Juan airport on the 19th and resumed in a limited manner on the 21st of the month. The damages to airport infrastructure have been evaluated by the Company to be approximately USD$15 million (Ps.294.9 million at an exchange rate of Ps.19.66 ), of which most have been disbursed at the reporting date and which amount will be recorded in the cost of services as incurred. The infrastructure has material damage insurance. The recovery of said insurance will be recognized when its collection is considered virtually certain.

Contingencies

As of December 31, 2016 and 2017, the Company has confirmed that the results of its lawsuits cannot be accurately predicted as their due processes are currently ongoing and there are not enough elements to determine whether they could largely affect the Company's financial position in the case of an adverse ruling.

a) The Company's transactions are subject to Mexican Federal and State Laws as well as the Puerto Rico and Colombia Law due to its subsidiaries out of Mexico.

b) At the time that the Company was carrying out the competitive bidding process for the sale of shares of the Airport Groups, the SCT established and communicated that concessionaires could amortize for tax purposes the value of the concession up to 15% a year. In February 2012, the SCT estimated an amount due payable by Cancún in the amount of Ps.865 million pesos against the ruling in question, because it considered that the

determination of the 15% amortization was not valid in 2006 and 2007. The Company disagreed with the decision and filed an appeal to overturn this determination. However, in order to adhere to the amnesty program set forth in Transitory Article Three of the new Income Law for 2013, the Company partially desisted from the appeal as it relates to the income tax obligation, but not in regards to the determination of the additional distribution related to employees’ statutory profit sharing, which the Company continues to appeal. The risk is that if a judge does not rule in favor of Cancún the amount payable would be Ps.116 million pesos.

c) There are currently a number of labor suits in progress against the Company, mainly in relation to involuntary termination. Any sentences that might be handed down not favoring the interests of the Company do not represent significant amounts. The Company is in legal proceedings at the date of this report and a resolution has not been issued yet. The total amount of those suits is approximately Ps.20 million pesos.

d) On March 8, 2017, the contractor Pórticos, S. A., in charge of the construction of the Quibdó Service Center, filed a lawsuit against Airplan (a subsidiary of the Company) for alleged breach of contract, a claim from which the Arbitration Tribunal was integrated into which was filed against demand by Airplan. Pórticos requests compensation of Ps.135,779 (COP20,619 Colombian pesos).

e) On March 17, 2014, the Port Authority of Puerto Rico filed a lawsuit against Aerostar and two fuel sellers at the LMM airport claiming to be entitled to a fee charged to the fuel sellers of the airport and not to Aerostar. In addition, they seek the return of money already received by the sellers of fuels to date, amounting to $ 1.4 million. Aerostar believes that it has a meritorious defense against the demand. Given the initial stage of the case, Management cannot determine the outcome of this matter; however, it reasonably believes that there are no loss contingencies that should be expense in the consolidated financial statements of the Company.

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Basis for preparation:

12 Months Ended

Dec. 31, 2017

Basis of preparation of financial statements [Abstract]

Disclosure of basis of preparation of financial statements [text block]

Note 17 - Basis for preparation:

The accompanying consolidated financial statements at December 31, 2015, 2016 and 2017 have been prepared in accordance with the IFRS and their Interpretations (IFRIC) as issued by the International Accounting Standard Board (IASB).

17.1) Basis of measurement

The consolidated financial statements have been prepared on the historical cost basis. The consolidated financial statements have been prepared under the going concern basis.

17.2) Use of estimates and judgments

The preparation of consolidated financial statements requires Management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, revenues and expenses. The areas involving a higher degree of judgment or complexity, or the areas where assumptions and estimates are significant to the consolidated financial statements, are described in Note 20.

Critical estimates and assumptions are reviewed regularly. Adjustments to the accounting estimates are recognized in the period in which the estimate is reviewed and in any future period affected.

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Financial risk management:

12 Months Ended

Dec. 31, 2017

Financial risk management [Abstract]

Disclosure of financial risk management [text block]

Note 19 - Financial risk management:

The Company is exposed to financial risks that result from changes in interest rates, foreign exchange rates, price risk, liquidity risk and credit risk. The Company controls and maintains the treasury control functions related to transactions and global financial risks through practices approved by its Executive Board and Board of Directors.

This note contains information regarding the Company's exposure to each of the aforementioned risks, and the objectives, policies and procedures to measure and manage risk.

The main risks to which the Company is exposed are:

19.1)	Market risk
19.1.1)	Interest rate risk
19.1.2)	Exchange rate risk
19.1.3)	Price risk
19.2)	Liquidity risk
19.3)	Credit risk - credit quality

19.1) Market risks

19.1.1) Interest rate risk

The Company has contracted bank loans to partially finance its operations. These transactions expose the Company to interest risk, with the main exposure to the risk of variable interest rates resulting from changes in the market base rates (banks charge interest based on London Inter Bank Offered Rate (LIBOR) plus 1.85%) that are applied to the Company's bank loans maturing in 2022 and 2024.

As of the issuance of the consolidated financial statements in 2016 and 2017, the reference rate used by the Company, i.e., LIBOR, has remained stable. If the LIBOR rate increases or decreases by 2.59 percentage points (4.13 in 2016), the effect on the comprehensive income statement would be an increase or decrease in income of approximately Ps.1,476 (Ps.1,659 in 2016). The risk is considered low, based on the materiality of the possible effect.

19.1.2) Exchange rate risk

The Company is exposed to minor risk for changes in the value of the Mexican Peso against the U. S. Dollar. Historically, a significant portion of income generated by the Company (mainly derived from the fees charged to international passengers) are denominated in U. S. Dollars, and despite that, income is invoiced in Pesos at the average exchange rate of the previous month and likewise the cash flows are collected in Pesos. At December 31, 2016 and 2017, the Company is exposed to exchange rate risk for monetary position, as shown below:

	December 31,
	2016		2017
Monetary position:
Asset	USD	188,765	USD	50,905
Liability		218,125		148,417
	USD	(29,360)	USD	(97,512)

At December 31, 2016 and 2017, the exchange rate was Ps.20.61 and Ps.19.66, respectively. Had the currency weakened by 10% in 2017 (15% in 2016) with respect to the U.S. Dollar, the Company would have had a profit (loss) on monetary position at the close in the amount of Ps.192 in 2017 (Ps.91 in 2016). As of April 25, 2018, the date of issuance of this report, the last known exchange rate was Ps.18.28.

19.1.3) Price risk

The rate regulation system applicable to the airports of the Company imposes maximum rates for each airport, which should not be exceeded on an annual basis. The maximum rates are the maximum annual income per unit of traffic (one passenger or 100 kg of cargo). If the maximum annual rate is exceed, the government authorities could revoke one or more of the Company's concessions.

The Company monitors and adjusts its income on a regular basis in order for its annual invoicing not to exceed the maximum rate limits.

Concentrations

At December 31, 2015, 2016 and 2017, approximately 69.58%, 69.81% and 59.09%, of revenue, not including income from construction services, resulted from operations at the Cancún International Airport.

19.2) Liquidity risk

Liquidity risk is the risk that the Company will not be able to meet its funding requirements. The Company's Management has established policies, procedures and limits of authority that govern the Treasury function. Treasury is responsible for ensuring liquidity and managing the working capital to ensure payments to suppliers, debt servicing and funding of operating costs and expenses.

The following table presents the analysis of the net financial liabilities of the Company based on the period between the date of the statement of consolidated financial position and the maturity date. The amounts presented in the table reflect the undiscounted cash flows, including contractual interest.

	Under		Between 3 months		Between 1		Between 2 and
At December 31, 2017	3 months		and one year		and 2 years		5 years
Bank loans and interest	Ps	177,080	Ps	606,433	Ps	880,357	Ps	12,146,826
Long term debt		337,107		317,789		633,140		11,442,620
Suppliers		428,881
Accounts payable and accrued expenses		1,175,306

	Under		Between 3 months		Between 1		Between 2 and
At December 31, 2016	3 months		and one year		and 2 years		5 years
Bank loans and interest	Ps	58,336	Ps	44,332	Ps	709,307	Ps	3,648,801
Suppliers		11,401
Accounts payable and accrued expenses		347,190

The following table shows the Company's short term liquidity as of:

	December 31,
	2016		2017
Current assets	Ps	4,233,018	Ps	5,787,862
Current liabilities		593,183		2,408,649
Short term position (liquidity)	Ps	3,639,835	Ps	3,379,213

19.3) Credit risk - credit quality

The financial instruments that are potentially subject to credit risks consist mainly of accounts receivable. Income obtained from fares charged to passengers is not guaranteed and therefore the Company faces the risk of not being able to collect the full amounts invoiced in the event of insolvency of its clients, which are the airlines.

In recent years, some airlines have reported substantial losses, and the income resulting from fares imposed to passengers coming from the main client airlines are not all guaranteed through bonds or other types of guarantees. Therefore, in the event of insolvency of any of the airlines, the Company would have no certainty of recovering the total sum of amounts invoiced to the airlines for passenger fees. In August 2010, Grupo Mexicana filed for bankruptcy. Grupo Mexicana owes the Company Ps128 million pesos for passenger fees. As a result of Grupo Mexicana’s bankruptcy, the Company has increased its reserve for uncollectable accounts by Ps.128 million pesos. The Company has determined that it may not be able to collect that amount from Grupo Mexicana.

The Company operates under three methods to collect from airlines:

a) Credit, mainly offered to airlines with which there is a history of frequent and stable flights, b) advances, from airlines with reasonably stable flights or that are in the exploration stage of routes or destinations, and c) cash, mainly offered for Charter flights and airlines with new flights.

With this segregation, the Company reduces its collection risk since the airlines that operate under methods b) and c) do not generate accounts receivable.

Cash and cash equivalents are subject to limited credit risks since the amounts are kept at financial institutions of good standing, and investments are subject to lower significant risk as they are being backed by the Mexican Federal Government or institutions with AAA high market ratings.

19.4) Capital management

The objective of Management is to safeguard the Company's ability to continue operating as a going concern in order to provide returns for stockholders and benefits for other stakeholders and to maintain an optimal capital structure to reduce the cost of capital.

These activities are monitored through the review of information pertaining to the Company's operation and the Industry. This effort is coordinated by the CEO. Through a planning method, detailed simulations are formulated of identified risks as they are known. The risks identified are valued in terms of probability and impact and are presented to the proper authorities. The result of all these activities is reported to the market through 20-F reports, the sole circular and quarterly reports presented to the National Banking and Security Commision in Mexico by a financial risk analysis committee that reports to the Company's Board of Directors.

19.5) Fair value

Financial instruments at fair value, presented by levels, in accordance with the valuation method used are included in levels 1 and 2. At December 31, 2016 and 2017, the Company has no financial instruments carried at fair value.

The different levels have been defined as follows:

Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2: Quoted prices for similar instruments in active markets; quoted prices for instruments, identical or similar, in non-active markets and valuations through models where all significant data are observable in the active markets.

Level 3: Asset or liability input that is not based on observable market data (i.e., non-observable).

The fair value of financial instruments traded in active markets is based on market prices quoted at the consolidated statement of financial position closing date. A market is considered active if quotation prices are clearly and regularly available through a stock exchange, trader, dealer, industry group, price fixing services, or regulatory agency, and those prices reflect regularly and on current bases the market transactions under independent conditions. The quoted price used for the financial assets held by Company's is the current offer price.

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Critical accounting judgments and key sources of estimation uncertainty:

12 Months Ended

Dec. 31, 2017

Disclosure of changes in accounting estimates [abstract]

Disclosure of accounting judgements and estimates [text block]

Note 20 - Critical accounting judgments and key sources of estimation uncertainty:

In applying the Company's accounting policies, which are described below, Management is required to make judgments, estimates and assumptions about the carrying amounts of assets and liabilities. Estimates and assumptions are based on historical experience and other factors considered relevant. Actual results could differ from those estimates.

Critical accounting judgments

Significant information on assumptions, critical judgments and uncertainty estimations recognized in the consolidated financial statements are as follows:

20.1	Revenue
20.2	Deferred tax assets and liabilities
20.3	Reserve for doubtful accounts
20.4	Commercial services revenues from leased locales
20.5	Useful life of the Airplan concession

20.1 Revenue

In accordance with Note 19.1.3, Management monitors and adjusts its revenue on a regular basis so that it does not exceed the maximum rate limits.

20.2 Deferred tax assets and liabilities

The Company recognizes deferred tax assets and liabilities based on the differences between the financial statement basis and the tax bases of assets and liabilities. In order to determine the basis of deferred IT, taxable income projections are prepared to evaluate whether the legal entity will be subject to IT.

The determination of the IT provision requires calculations and interpretation and application of complex tax laws. Those calculations are used to assess the period and method of recovery of favorable tax balances.

Management has determined deferred taxes based on approved tax rates that are in line with its expectation of the form of realization of such items. See Note 18.16. Management's expectation could be affected by the main detailed items described in Note 14.

20.3 Reserve for doubtful accounts

The Company carries out constant evaluations of the credits made to its clients and adjusts the credit limits based on the payment history of its clients as well as on the credit's current value. It continuously monitors collections and payments of its clients, thus preventing estimated credit losses based on its experience and losses from collection to the client that has been identified. Although those credit losses have been historically within expectations, as well as within the reserve created to prevent them, it cannot be guaranteed that the Company will continue experiencing the same credit losses that it had in the past. See Notes 6 and 18.7.2.

The Company conducts a sensitivity analysis to determine the degree to which possible changes to the assumptions used in determining whether or not the amount calculated of the reserve would be significantly affected. Management has concluded that percentage used to determine the reserve is the most sensitive assumption and therefore, if said percentage were to show an increase or decrease of 15%, it would have no significant effect, since this would represent Ps28 positive or negative in 2017 (Ps19 positive or negative in 2016).

20.4 Commercial services revenues from leased locales

Lease revenues are accrued monthly, and they are determined by applying a percentage on real sales revenues of the lessors (share) or a minimum agreed upon amount. Both are set forth in the respective lease agreements. The Company performs an estimate for the last days of the month to determine the monthly percentage of the share. Management compares the estimated bases with the real billing to conclude that there were no significant differences.

20.5 Useful life of the Airplan concession

The term of execution of the contract extends from the date of signing of the act of commencement of execution until the date on which one of any of the following events occurs:

· That the regulated revenues generated are equal to the expected regulated revenues, provided that by that time 15 years have elapsed.

· That 25 years have elapsed since the date of execution of the execution start certificate, regardless of whether, at the time, the regulated revenues generated have not matched the value of the expected regulated revenues.

· If the regulated income generated equals the expected regulated income before 15 years have elapsed from the date of execution of the certificate of execution, the duration of the execution of the contract will be, in any case, 15 years.

It must be taken into account, for purposes of the regulated revenues expected according to the definition of the concession contract, that the expected regulated revenue will increase once each of the complementary works (mandatory or voluntary) is delivered to the grantor.

The useful life for the amortization was determined as the duration of the concession and the amortization is calculated on a linear basis based on the years in which the recovery of the expected income of the financial model held by the Company is expected. The minimum term of the concession is the year 2015; however, in accordance with the complementary works carried out and the measurement of the expected income against the income generated, the concession will have a useful life until the year 2032.

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Consolidated statements of cash flows note:

12 Months Ended

Dec. 31, 2017

Disclosure of Consolidated statements of cash flows [Abstract]

Disclosure of cash flow statement [text block]

Note 21 - Consolidated statements of cash flows:

As of December 31, 2016 and 2017, the analysis of net debt and movements in net debt is presented below:

	Bank				Long-term
	loans				debt
	2016		2017		2017
Accounts payable	Ps		Ps		Ps	340,288
Bank loans (Note 11)		58,336		173,471
Bank loans (Note 11)		4,402,440		10,321,382
Long-term debt (Note 12)						7,149,177
Balances at December 31	Ps	4,460,776	Ps	10,494,853	Ps	7,489,465
Balances at January 1 of net debt	Ps	3,678,128	Ps	4,460,776
Acquisition of Aerostar and Airplan				3,424,897		7,182,963
Interest expense		126,186		322,996		295,834
Proceeds from bank loans				8,000,000
Interest paid		(106,873)		(351,152)		(277,068)
Payment of the long-term debt and bank loan				(5,339,338)		(102,907)
Foreign currency translation				217,385		390,643
Exchange (income) / loss on foreign currency		763,335		(240,711)
Balances at December 31	Ps	4,460,776	Ps	10,494,853	Ps	7,489,465

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Subsequent events:

12 Months Ended

Dec. 31, 2017

Disclosure of non-adjusting events after reporting period [abstract]

Disclosure of events after reporting period [text block]

Note 22 - Subsequent events:

The Company has not yet received regulatory approval to consummate its acquisition of Aeropuertos de Oriente S. A. S. (Oriente). In light of the pending regulatory approvals for the acquisition of Oriente, the sellers and the Company have agreed to negotiate in good faith an adjustment to the purchase price and the terms and conditions of their acquisition agreement, and to use commercially reasonable efforts to obtain the regulatory approvals. Oriente has concessions to operate the following airports in Colombia: Simón Bolívar International Airport in Santa Marta, Almirante Padilla Airport in Riohacha, Alfonso López Pumarejo Airport in Valledupar, Camilo Daza International Airport in Cúcuta, Palonegro International Airport in Bucaramanga and Yariguíes Airport in Barrancabermeja. If the acquisition of Oriente is made. The Company will hold approximately 97.26% of the capital stock of Oriente.

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Authorization of the consolidated financial statements:

12 Months Ended

Dec. 31, 2017

Authorisation of financial statements [Abstract]

Disclosure of authorisation of financial statements [text block]

Note 23 - Authorization of the consolidated financial statements:

The consolidated financial statements and their twenty one notes are an integral part of the consolidated financial statements, which were approved for their issuance on April 25, 2018 by Mr. Adolfo Castro Rivas, Chief Executive Officer of Grupo Aeroportuario del Sureste, S. A. B. de C. V. and by the Audit Committee.

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Summary of the main accounting policies: (Policies)

12 Months Ended

Dec. 31, 2017

Significant accounting policies [Abstract]

Description of other accounting policies relevant to understanding of financial statements [text block]

18.1) New standards and amendments not yet adopted

New standards, amendments and interpretations effective for periods beginning on or after January 1, 2017, 2018 and 2019.

Standards applicable as of January 1, 2017 that had no significant effects on the reporting of the Company's consolidated financial statements.

- Disclosure Initiatives - Amendments to IAS 7. It will be necessary to explain any changes in liabilities arising from financing activities, including changes arising from cash flows (resources obtained and loan payments), and non-monetary changes, such as acquisitions, disposals, interest accrued and unrealized exchange differences. The changes in financial assets must be included in this disclosure if the cash flows were, or will be, included in the cash flows from financing activities. This might be the case of assets covering liabilities arising from financing liabilities.

Standards in effect as from January 1, 2018 and 2019.

- IFRS 15 “Revenue from contracts with clients” (effective as of January 1, 2018). The IASB has issued a new standard for recognizing revenue. IFRS 15 will replace IAS 18, which covers contracts for goods and services and IAS 11, which covers construction contracts. The new standard is based on the principle that revenue is recognized when control of a good or service is transferred to a customer - therefore, the notion of control replaces the existing notion of risks and rewards. A five-step process must be applied before income can be recognized; identifying contracts with the respective customers; identifying the separate yield obligation; determining the transaction price in the contract; assigning the transaction price of each yield obligation, and recognizing income when each yield obligation is met.

- The key change to the current practice is: any distinguishable product or service package must be recorded separately, and any discount or price mark-down in the contract must be assigned to its specific element separately. Income may be recorded earlier than required by the current rules if the consideration varies for any reason (incentives, reductions, yield charges, royalties, success results, etc.). Minimum amounts must be recorded if not at risk of reversal (as established in IFRS 15). The point at which income can be recorded may vary. A portion of the income currently recorded at one point in time upon conclusion of a contract may have to be recorded throughout the term of the contract and vice a versa.

Entities must apply IFRS 15 using one of the following two methods:

⋅ Retrospective method. Requires applying IFRS 15 to each reporting period, i.e., restating prior periods in accordance with IAS 8 “Accounting policies, changes in accounting estimates and errors”.

⋅ Modified retrospective method. Requires applying IFRS 15 only at the date of adoption and no adjustments need be made to prior reporting periods. Under that method, entities must recognize the accrued effect of first-time application of IFRS 15 as an adjustment to the retained earnings opening balance (or any other component of capital, as the case may be) in the period of first-time application. Comparative periods reported need no adjustments. For example, if the entity adopts IFRS 15 on January 1, 2018, the accrued effect would have to be recognized in retained earnings on January 1, 2018.

In 2017, the Company's Management carried out an inventory survey of all contracts with customers. The correct fulfillment of the performance obligations of the contracts was verified, and their validation of the prices stipulated by type of service, the results obtained reveal the evidence that there will be no significant impact in the annual consolidated financial statements by the adoption of IFRS 15 ; However, in order to further deepen its analysis, the Company analyzes whether the regulated monthly income could have an impact on its recognition in the interim periods throughout the year. The method that the Company has considered to use is the modified retrospective.

At January 1, 2017, no changes have been made as a result of applying IFRS 15, since, as mentioned in the preceding paragraphs, the changes arising from the new standard refer to reclassifications made in different captions of the statement of comprehensive income with no effects on the valuation thereof, which means that there were no changes in the net profit for 2016, which amount is include in retained earnings in the comparative statement of comprehensive income at December 31, 2017.

- Amendments to IFRS 15 “Revenue from contracts with customers” (effective as of January 1, 2018) - The amendments include the guidelines for identifying yield obligations, accounting for intellectual property licenses and evaluating the principal vs. the agent (reporting of gross income vs. reporting of net income), including additional practical files related to the transition to the new standard. In general terms, those amendments include:

a. The guidelines to determine when the promises for goods or services in an agreement are different and, therefore, when they should be accounted for separately. The amendments specifically explain how to determine if the goods or services can be identified separately from other contractual promises and they establish that the objective is to determine whether the nature of an entity's promise is to transfer individual goods or services to a customer, or to transfer a combined product (or products) whereby the individual goods and services are considered supplies. The amendment has no significant effects on the Company, as there are no different yield obligations in the respective lease agreements.

b. The guidelines regarding industrial property licenses for determining when income from an intellectual property license must be recorded “over time” or when it must be recorded “in a specific moment in time”. That amendment has not effects on the Company as it does not conduct that type of transactions.

c. Guidelines explaining that the principal in an agreement controls the goods or services before they are transferred to a customer. The amendments provide specific revisions to explain the relationship between the principle and the indicators of control, the “account unit” for conducting evaluations and the manner of applying the control principle to services. The IASB also amended the indicator structure in order for it to indicate when the entity is the principal rather than indicating when it is an agent, and it eliminated two indicators: 1) the entity's consideration is in the form of a commission, and 2) the entity is not exposed to credit risk.

- IFRS 9 “Financial instruments and amendments associated to other standards” (effective as of January 1, 2018). IFRS 9 replaces the classification and measurement models of IAS 39 “Financial instruments: Recognition and measurement, with a single model that initially has only two classification categories: amortized cost and fair value. Classification of debt assets will be driven by the entity's business model for managing the financial assets and the contractual cash flow characteristics of financial assets. A debt instrument is measured at amortized cost if: a) the purpose of the business model is to maintain the financial asset for generating contractual cash flows, and b) the instrument's contractual cash flows merely represent the payment of principal and interest. All other debt and equity instruments, including investments in complex debt and equity instruments, must be recognized at fair value.

All financial asset movements are recorded in the statement of income, except for equity instruments that are not held for sale, which may be recorded in the statement of income or in the respective reserves (without being subsequently recycled to the statement of income).

As regards financial liabilities measured at fair values, entities must recognize a portion of the changes in fair value arising from changes in credit risk in other comprehensive income rather than in the statement of income. The new hedge accounting rules (released in December 2013) align hedge accounting more closely with common risk management practices. As a general rule, it will be easier to apply hedge accounting. The new standard also introduces additional disclosure requirements and changes in presentation. In June 2014, the IASB made further changes to the classification and measurement rules and also introduced a new impairment model. With these amendments, IFRS 9 is now complete. The changes introduce: a third measurement category (fair value through OCI) for certain financial assets that qualify as capital instruments; a new model of expected loan losses involving a3-stage approach whereby financial assets go through the three phases as their credit quality changes. The stage dictates how an entity must measure impairment losses and apply the effective interest method. A simplified approach is permitted for financial assets that lack a significant financial component (e.g., account receivable). During initial recognition, entities record losses on day one equal to expected credit losses over 12 months (or the lifetime of expected credit losses from accounts receivable), unless assets are considered to be impaired as concerns credit. For financial periods starting before February 1, 2015, entities may opt for early application of IFRS 9 with respect to the following: credit risk requirements for financial liabilities; classification and measurement requirements for financial assets and liabilities and hedge accounting.

The Company initially recognizes the bank loans obtained at their fair value net of the costs incurred in the transaction, subsequently they are recorded at their amortized cost. Therefore, in this sense, the Company does not consider that the adoption of this new standard would have an effect on its accounting records. On the other hand, the Administration continues with the evaluation of the effects of the adoption of this new standard in its accounts receivable and within its assessments of the elements of the standard, considers that it could have a non-significant impact within the Determination of the estimate for losses of accounts receivable, which will be determined on expected losses, and not incurred as is currently done. The Company is in the process of determining the monetary effect of this change, and is analyzing each item receivable to determine the probable effect of non-recovery. As regards the new hedging rules, there will be no effect as the Company does not hold any instrument subject to this accounting treatment.

- IFRS 16 Leases (mandatory for financial years commencing on or after 1 January 2019). IASB issued in January 2017 and 2016 a new standard for lease accounting. This standard will replace the current IAS 17 standard, which classifies leases into financial and operating leases. IAS 17 identifies leases as financial when the risks and benefits of an asset are transferred and as operations to the rest of the leases. IFRS 16 eliminates the classification between financial and operating leases, and requires the recognition of a liability reflecting future payments and an asset for “right to use” in the majority of leases. The IASB has included some exceptions in short-term leases and in low-value assets. The above modifications are applicable for the lessee’s accounting, while for the lessor they remain similar to the current ones. The most significant effect of the new requirements would be reflected in an increase in lease assets and liabilities, also having an effect on the income statement in the depreciation and financing expenses for the assets and liabilities recognized, respectively, and decreasing the expenses related to leases previously recognized as operating leases. The standard is effective for periods beginning on or after January 1, 2019.

The standard is effective for periods beginning on or after January 1, 2019, with early adoption permitted if IFRS 15 is also adopted.

On the date of issuance of the consolidated financial statements, the Administration is in the process of evaluating, identifying and quantifying the leases in the balance sheet and the income statement. The Company expects to conclude its analysis during the next year.

There are no other additional standards, amendments or interpretations issued but not yet in effect that could significantly impact the Company.

Description of accounting policy for subsidiaries [text block]

18.2) Consolidation

The Company's consolidated subsidiaries in which it holds shares at December 31, 2016 and 2017 are as follows:

	Shareholding
	percentage (%)		Main activity
Aeropuerto de Cancún, S. A. de C. V. (*)(**)	100.00	%	Airport services
Aeropuerto de Cozumel, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Mérida, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Huatulco, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Oaxaca, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Veracruz, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Villahermosa, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Tapachula, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Minatitlán, S. A. de C. V.	100.00	%	Airport services
Cancún Airport Services, S. A. de C. V. (***)	100.00	%	Airport services
RH Asur, S. A. de C. V.	100.00	%	Administrative services
Servicios Aeroportuarios del Sureste, S. A. de C. V.	100.00	%	Administrative services
Asur FBO, S. A. de C. V. (***)	100.00	%	Administrative services
Caribbean Logistics, S. A. de C. V. (***)	100.00	%	Cargo services
Cargo RF, S. A. de C. V. (***)	100.00	%	Cargo services
Sociedad Operadora de Aeropuertos Centro Norte, S. A. (***)	92.42	%	Airport services
Aerostar Airport Holdings, LLC (***)	60.00	%	Airport services

^(*) Cancún held a 50% stake in Aerostar until May 26, 2017, which was accounted as a joint venture. See Note 9. As of May 26, 2017, the Cancún Airport acquired an additional 10% equity interest in Aerostar. As a result of this acquisition, the Company has a 60% shareholding and now controls Aerostar, therefore Aerostar is consolidated in the Company’s financial statements.

^(**) Aeropuerto de Cancún, S. A. de C. V. acquired on October 19, 2017 a 92.42% equity interest in Sociedad Operadora de Aeropuertos Centro Norte, S. A. (Airplan), Company that holds the concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the Enrique Olaya Herrera in Medellín, José María Córdoba in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports, and from that date Airplan’s results have been incorporated line-by-line in the Company’s and Cancún Aiport’s financial statements.

⁽***⁾ These subsidiaries sub-consolidate at the Cancún Airport.

Aerostar records and reports its financial information according to U.S. generally accepted accounting principles (US GAAP) and in USD. For purposes of consolidating Aerostar into the Company, a translation to Mexican pesos is performed and a reconciliation from US GAAP to IFRS is carried out. The exchange rate used at 2017 year end was Ps.19.66 Mexican pesos per dollar.

Airplan records and reports its financial information in IFRS as adopted in Colombia and their corresponding IFRIC issued by the IASB and in Colombian pesos. For purposes of consolidating Airplan into the Company, a translations to Mexican pesos is performed. The exchange rate used at 2017 year end was $151.86 Colombian pesos per Mexican peso.

(a) Subsidiaries

Subsidiaries are all entities over which the Company has control. The Company controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are fully consolidated from the date on which control is transferred to the Company. They are deconsolidated from the date that control ceases.

Intercompany transactions, balances, revenues and expenses due to transactions between the group companies were eliminated. Non-realized results were also eliminated. The subsidiaries’ accounting policies are consistent with the policies adopted by the Company. The Company uses the purchase method to recognize business acquisitions. The consideration for the acquisition of a subsidiary is determined based on the fair value of the net assets transferred, the liabilities assumed and the capital issued by the Company.

The Company defines a business combination as a transaction in which it obtains control of a business, through which it has the power to govern and manage the relevant activities of the of assets and liabilities of said business with the purpose of providing return in the form of dividends, lower costs or other economic benefits directly to investors.

The consideration transferred in the acquisition of a subsidiary is the fair value of the assets transferred, the liabilities incurred and the equity interests issued by the Company. The consideration transferred includes the fair value of any asset or liability that results from a contingent consideration agreement. The identifiable assets acquired, the liabilities and contingent liabilities assumed in a business combination are initially measured at their fair value on the date of acquisition. The Company recognizes any non-controlling interest in the acquired entity based on the proportional part of the non-controlling interest in the net identifiable assets of the acquired entity.

Costs related to the acquisition are recognized as expenses in the consolidated statement of income as incurred.

Goodwill is initially measured as the excess of the consideration paid and the fair value of the non-controlling interest in the acquired subsidiary over the fair value of the identifiable net assets and the liabilities acquired. If the consideration transferred is less than the fair value of the net assets of the acquired subsidiary in the case of a purchase at a bargain price, the difference is recognized directly in the consolidated statement of income. If the business combination is reached in stages, the book value at the date of acquisition of the participation previously held by the Company in the acquired entity, is remeasured at its fair value at the acquisition date. Any loss or gain resulting from such remeasurement is recognized in the results of the year. At the date of the measurement made by Management, a gain in business combination of Ps.7,029,200 was determined on the Aerostar acquisition, which was reflected in the consolidated statement of comprehensive income. See Note 8.1.

(b) Changes in the interests of subsidiaries without loss of control

Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions, which are transactions with shareholders in their capacity as owners. The difference between the fair value of the consideration paid and the interest acquired in the carrying value of the net assets of the subsidiary is recorded in stockholders’ equity. Gains or losses on the sale of non-controlling interests are also recorded in stockholders’ equity.

(c) Disposal of subsidiaries

When the Company loses control over one entity, any retained interest in the entity is measured at fair value, recognizing the effect in income. Subsequently, the fair value is the initial carrying amount for the purpose of determining the retained interest as an associate, joint venture or financial asset, as appropriate. Additionally, the amounts previously recognized in Other Comprehensive Income (OCI) relating to those entities are canceled as though the Company had directly disposed of the related assets or liabilities. This means that the amounts previously recognized in OCI are reclassified to income for the period.

(d) Investment in joint ventures is accounted for under the equity method

The Company applied the guidance under IFRS 11 to the agreement entered into with Highstar for the operation of the LMM Airport through Aerostar as of the initial operation date of February 27, 2013. Under IFRS 11, “Joint arrangements” operations are classified as joint operations or joint ventures depending on the contractual rights and obligations of each investor. The Company has evaluated the nature of its operations and has determined that it is a joint venture. Joint ventures are recorded by the equity method.

Under the equity method, the interest in the joint business is recognized initially at cost and it is subsequently adjusted to recognize the Company's interest in the earnings after the acquisition, or losses and movements in OCI. When the Company's interest in the losses of a joint business is the same as or higher than its interest in said business (which includes all long-term interest that forms part of the net investment of the Company in the joint venture), the Company does not recognize additional losses, unless it has incurred obligations or made payments on behalf of the joint venture.

Unrealized gains from transactions carried out between the Company and the joint business are eliminated based on the percentage of the Company's interest in the joint businesses. Unrealized losses are also eliminated, unless the transaction provides evidence of impairment in the transferred assets. The accounting policies for joint ventures have been changed when deemed necessary to guarantee adherence with the policies adopted by the Company.

In accordance with IFRS 3 “Business combinations”, as of June 1, 2017 the acquisition is considered a business combination conducted in stages, which means that the fair value of interest previously acquired was also revalued.

Description of accounting policy for foreign currency translation [text block]

18.3) Translation of foreign currencies

Functional currency and reporting currency

Items included in the consolidated financial statements of each of the companies of the Company are measured in the currency of the primary economic environment in which the entity operates, i.e., its “functional currency” which is also the reporting currency. The consolidated financial statements are presented in (thousands of Mexican pesos), which is the Company's reporting currency.

18.3.1) Consolidation of subsidiaries with a functional currency different from the reporting currency

The results and financial position of Aerostar and Airplan (none of which handle a currency that corresponds to a hyperinflationary economy) expressed in a functional currency other than the reporting currency are converted to the reporting currency as follows.

(i) The assets and liabilities recognized in the consolidated statement of financial position are translated at the exchange rate on the balance sheet date.

(ii) The stockholders’ equity in the consolidated statement of financial position is translated using the historical exchange rates.

(iii) Income and expenses recognized in the consolidated statement of income are translated at the average exchange rate for each year (unless that average is not a reasonable approximation of the effect of translating the results derived from the exchange rates prevailing at transaction dates, in which case the Company uses the respective rates).

(iv) The resulting exchange differences are recognized within OCI.

Goodwill and fair value adjustments that arise on the date of acquisition of a foreign operation to measure them at fair value are recognized as assets and liabilities of the foreign entity and are converted at the closing exchange rate.

18.3.2) Transactions in foreign currency and results from exchange fluctuations

Operations carried out in foreign currency are recorded in the functional currency applying the exchange rates in effect at the transaction date or the exchange rate at the date of the valuation when the items are revalued.

Exchange differences arising from fluctuations in the exchange rates between the transactions and settlement dates, or the consolidated statement of financial position date, are recognized in the consolidated statements of comprehensive income.

Description of accounting policy for determining components of cash and cash equivalents [text block]

18.4) Cash and cash equivalents

Cash and cash equivalents include cash, bank deposits and other highly liquid investments with low risk of changes in value with original maturities of three months or less. As of December 31, 2016 and 2017, cash and cash equivalents consisted primarily of peso and dollar denominated bank deposits and peso denominated investment bonds issued by the Mexican Federal Government.

Description of accounting policy for fiduciary rights [Text Block]

18.5) Fiduciary rights

For the administration of the resources of the concession and the payment of the obligations in charge of the concessionaire, Airplan, a trust is constituted to which it transfers all of the gross income received and all the debt and capital resources it obtains for the execution of the concession.

Description of accounting policy for restricted cash and cash equivalents [text block]

18.6) Restricted cash and cash equivalents

Restricted cash includes cash and cash equivalents that are restricted in terms of withdrawal or use. The nature of the restrictions includes restrictions imposed by financing agreements, federal agency funds related to capital expenditures, for example, for purposes of Aerostar, PFC and Airport Improvement Program (AIP) or other reserves (for example, Fund for promotion and support of air travel).

Restricted cash and cash equivalents is presented as current if it is expected to be used within twelve months of the filing date. Any restricted fund beyond twelve months is recorded as non-current.

Description of accounting policy for financial assets [text block]

18.7) Financial assets

18.7.1) Classification and measurement

Upon their initial recognition, the Company classifies its financial assets into the following categories: loans and accounts receivables. The classification depends on the purpose for which the asset was acquired.

i. Financial assets at fair value through profit or loss

A financial asset is classified at fair value through profit or loss, if it is classified as held for trading or is designated as such on initial recognition. A financial asset is classified in this category if it is acquired mainly for the purpose of being sold in the short-term. The assets in this category are valued at fair value and the respective changes are recognized in income. Derivative financial instruments are also classified as held for trading, unless they are designated as hedges. At December 31, 2017 and 2016, the Company does not have operations of this nature.

ii. Loans and accounts receivable

Loans and accounts receivable are initially recognized at fair value plus transaction costs and are subsequently stated at amortized cost using the effective interest method less a provision for impairment. In practice, it is usually recognized at invoice amount, adjusted for estimated impairment of the account receivable. These items are shown under current assets, except for items with maturities over 12 months, which are classified as non-current assets.

The booked values of the financial instruments correspond in their entirety to the classification of the loans and accounts receivable.

18.7.2) Impairment of financial assets

The allowance for impairment of accounts receivable is established when there is objective evidence that the Company may not recover amounts receivable according to the original terms of the receivables. The Company analyzes the financial position of its debtors, delinquencies in its portfolio, and other factors to determine the amount of the estimated impairment. The amount of the provision is the difference between the carrying value of an asset and the present value of estimated future cash flows, discounted at the effective interest rate. The carrying amount of the asset is reduced through the use of a provision for uncollectable accounts and the amount of the loss is recognized in the consolidated profit or loss. When an account receivable is considered uncollectible, it is canceled against the allowance for doubtful accounts. Subsequent recoveries of amounts previously written off are credited to the consolidated comprehensive income statement.

Description of accounting policy for leases [text block]

18.8) Leasing

18.8.1) As lessor

The leasing of terminal space made by the Company in its capacity as lessor at the terminals is documented by contracts with either fixed income or monthly fees based on the higher amount of a minimum monthly fee or a percentage of the lessee’s monthly revenue.

Since the leased assets are part of the concession assets and thus do not belong to the Company, there is no transfer of the risks and rewards of ownership and therefore are classified as operating leases.

Revenues from operating leases are recognized as non-aeronautical revenues on a straight line basis over the lease term.

18.8.2) As lessee

The leases in which a significant portion of the risk and rewards related to ownership are retained by the lessor are classified as operating leases. The payments made under operating leases (net of any incentives received from the lessor) are charged to the statement of income based on the straight-line method over the lease term.

18.8.3) Financial leases

Property, plant and equipment leases in which Airplan holds substantially all the risks and rewards of ownership are classified as financial leases. Financial leases are capitalized at the beginning of the lease at the lower of the fair value of the leased asset and the present value of the minimum lease payments. Each financial lease payment is allocated between the liability and the financial costs. Financial lease obligations, net of the financial burden, are presented as debts (financial obligations), current or non-current, depending on whether or not payment maturities are below a 12-month period. Financial costs are charged to income for the year over the lease period so as to produce a periodic constant interest rate on the remaining balance of the liability for each period. Property, plant and equipment acquired under financial leases are depreciated over the shorter of the useful life of the asset and the lease term.

Description of accounting policy for property, plant and equipment [text block]

18.9) Land, furniture and equipment

Furniture and equipment are recorded at cost less accumulated depreciation and impairment loss. The cost includes expenses directly attributable to the acquisition of those assets and all costs associated with placing the assets in the location and in the condition necessary for them to operate as intended by Management.

Land is recorded at cost and it is not depreciated. Depreciation of other items of plant and equipment is calculated on the straight-line method based on the residual values over their estimated useful lives. The useful lives from the date of acquisition are 10 years. The useful lives at the acquisition date of the furniture and equipment are as shown below:

	2016	2017
Furniture equipment	10%	10 to 20%
Machinery	10%	10 to 20%
Computer equipment	33%	33 to 20%
Transportation equipment	25%	20 to 25%
Improvements to leased premises		10%

The residual values, useful life and depreciation method are reviewed and adjusted, if necessary, on an annual basis.

18.9.1) Land

Land represents a territorial extension for which the Company has an obligation of constructing 450 hotel rooms along with the National Tourism Fund (FONATUR in its acronym in Spanish) in Huatulco which are recorded at its cost and are not subject to depreciation. See Note 14c.

Description of accounting policy for intangible assets and goodwill [text block]

18.10) Intangible assets

18.10.1) Concessions

The airports that are part of the Company performed the analysis of the criteria that must be taken into account to know if they are within the scope of IFRIC 12:

a. The grantor controls or regulates what services the operator must provide with the infrastructure, to whom it must provide them at what price,

· The grantor does not need to have full price control; it is sufficient that the price is regulated by the grantor, the contract or the regulator;

· The grantor can control the price through a limit mechanism;

· The price can vary from fixed price arrangements to those based on a formula up to a maximum price.

b. The grantor controls, through ownership, the right of benefits or otherwise, any significant residual interest in the infrastructure at the end of the term of the agreement.

Taking into consideration the foregoing, these criteria are applicable to each of the concessions that the Company has, which is why their measurement and determination will be considered within the scope of IFRIC 12. In addition, at the end of all the concessions all assets become the property of the nation in which the concession is located.

Within the scope of IFRIC 12, the respective assets can be classified as:

· Financial assets: When the licensor establishes an unconditional right to receive cash flows and other financial assets independently of the use of the public service by the users.

· Intangible assets: Only when the licensor agreements do not establish a contractual right to receive cash flows and other financial assets from the licensor, independently of the use of the public service by the users. Airport concessions have been considered within the scope of IFRIC 12 as an intangible asset because they comply with the above provisions and no financial assets have been recognized in that regard.

Mexico:

Rights to use airport facilities and airport concessions include the acquisition of the nine airport concessions and the rights acquired from Cancún Air, Dicas and Aeropremier.

Amortization is computed using the straight-line method over the estimated useful life of the concessions, which is 31 years as of December 31, 2017.

Aerostar:

The airport concession right, which includes certain capital expenditures in improvement projects, is recognized as an intangible asset at its cost less accumulated amortization and impairment losses.

Amortization is calculated using the straight-line method during the term of the Agreement (40 years); 36 years as of December 31, 2017.

Airplan:

In the case of Airplan, the right granted by the Concession Contract No.8000011-OK and Public Tender No.10000001OL2010, respectively, is recorded as intangible, through which the grantors assign to the Company the regulated and unregulated income corresponding to each of the airports subject to the concession.

In turn, the costs per loan that are related to the works in execution are part of the intangible.

The intangible asset resulting from the recognition and updating of the estimated income of the contract is amortized based on the proportion of the accumulated income of the contract and the total income. Amortization is recognized in the results of the period.

The useful life for the amortization was determined as the duration of the concession and the amortization rate is calculated based on the percentage of execution of the revenues with respect to the total expected income of the financial model that the Company has. The minimum term of the concession is the year 2015; however, in accordance with the complementary works carried out and the measurement of the expected income against the income generated, the concession will have a useful life until the year 2032.

18.10.2) Licenses and direct commercial operations (ODC, by its initials in Spanish)

These items are recognized at their cost less the accrued amortization and any recognized impairment losses. They are amortized on a straight line basis using their estimated useful life, determined based on the expected future economic benefits, and are subject to testing when indication of impairment is identified.

The estimated useful lives at December 31, 2017 are as follows:

Licenses	31 years
ODC	31 years
Commercial Rights of Aerostar	36 years
Commercial Rights of Airplan	15 years

18.10.3) Goodwill

Goodwill represents the acquisition cost of a subsidiary in excess of the Company's interest in the fair value of the identifiable net assets acquired, determined at the acquisition date, and it is not subject to amortization. Goodwill is shown separately in the consolidated statement of financial position and is recorded at cost less accumulated impairment losses, which are not reversed. Gains and losses on the disposal of an entity include the carrying amount of goodwill relating to the entity sold.

18.10.4) Intangible assets acquired as part of a business combination

When an intangible asset is acquired as part of a business combination, it is recognized at fair value at acquisition date. Subsequently,. intangible assets acquired in a business combination, such as commercial rights, are recognized at cost less the accumulated amortization and the accrued amount of impairment losses. Adjustments related to remeasurement, gain or loss related to an equity accounted investment are presented in non-operating income (loss).

Description of accounting policy for impairment of non-financial assets [text block]

18.11) Impairment of long term non-financial assets

Long term non-financial assets subject to amortization or depreciation are subject to impairment tests when events or circumstances arise that indicate that their book value might not be recovered. Impairment losses correspond to the amounts where the book value of the asset exceeds their recoverable amount. The recoverable amount of assets is the higher of the fair value of the asset less the costs incurred for its sale and value in use. For impairment assessment purposes, assets are grouped at the lowest levels at which they generate identifiable cash flows. Non-financial assets are assessed at every reporting date in order to identify potential reversals of such impairment. At December 31, 2016 and 2017, Management has not identified events or circumstances that indicate that the book value might not be recovered.

Description of accounting policy for trade and other payables [text block]

18.12) Accounts payable

Accounts payable are liabilities with creditors for purchases of goods or services acquired during the regular course of the Company's operations. When payment is expected over a period of one year or less from the closing date, they are presented under current liabilities. If the foregoing is not complied with, they are presented under non-current liabilities.

Accounts payable are initially recognized at their fair value and are subsequently measured at amortized cost using the effective interest method.

Description of accounting policy for borrowings [text block]

18.13) Bank loans

Loans from financial institutions are initially recognized at their fair value, net of transaction costs. Those funds are subsequently recorded at their amortized cost; any difference between the funds received (net of transaction costs) and the redemption value is recognized in the statement of income during the funding period using the effective interest method.

18.13.1) Refinancing costs

When loan contracts are altered, Management analyzes if the changes are substantial enough for the recognition of a new loan due to the invalidation of the old loan. If the changes are not substantial, the loan can be recorded as a renegotiation of the original loan. Depending on whether the loan should be cancelled and recognized as a new loan or classified as a renegotiation, the transaction costs have different treatments.

The costs incurred in commissions either from the start of an agreement or generated in the refinancing derived from the renegotiation of an indebtedness, are recorded in a prospective way in case the alterations to a loan contract are not deemed an extinction of the original document, but it is determined that they are changes only to the conditions for the agreed flows at the beginning of the negotiation.

Description of accounting policy for financial liabilities [text block]

18.14) Derecognition of financial liabilities

The Company derecognizes its financial liabilities if, and only if, the obligations of the Company are met, are cancelled or if they expire.

Description of accounting policy for provisions [text block]

18.15) Provisions

Liability provisions represent a present legal obligation or an assumed obligation as a result of past events, when the use of economic resources is likely in order to settle the obligation and when the amount can be reasonably estimated. Provisions are not recognized for future operating losses.

Provisions are measured at the present value of expenses expected to cover the related obligation, using a pretax rate that reflects the actual considerations of the value of money market over time and the specific risks inherent in the obligation. The increase in the provision over time is recognized as an interest expense.

When there are similar obligations, the likelihood of the outflow of economic resources for settling those obligations is determined considering them as a whole. In these cases, the provision thus estimated is recorded, provided the likelihood of the outflow of cash with respect to a specific item considered as a whole is remote.

Description of accounting policy for income tax [text block]

18.16) Deferred IT, and tax on dividends

The expense for IT includes both the current tax and deferred taxes. Tax is recognized in the statement of income, except when it relates to items recognized directly in OCI or in stockholders’ equity in which case, the tax is also recognized in OCI items or directly in stockholders’ equity, respectively.

Deferred IT were recorded based on the comprehensive method of liabilities, which consists of recognizing deferred taxes on all temporary differences between the book and tax values of assets and liabilities to be materialized in the future at the enacted or substantially enacted tax rates in effect at the consolidated financial statement date. See Note 14.

Deferred tax assets are only recognized if future tax profits are expected to be incurred against which temporary differences can be offset.

Deferred tax assets and liabilities from the temporary differences arising from the investments in subsidiaries and joint businesses are recognized, except when the Company controls the reversal period for such temporary differences and it is likely that the temporary differences will not be reverted in the near future.

Deferred IT are offset when there is a legal right for each entity to offset current tax assets against current tax liabilities and when deferred IT assets and liabilities relate to the same tax authorities.

The expense for income taxes incurred are computed based on tax laws approved in Mexico at the date of the consolidated statement of financial position.

Current IT is made up of IT, which is recorded under income for the year in which it is incurred. The tax is based on taxable income.

To determine the IT the applicable rate in Mexico for 2017 and 2016 was 30%. The applicable rate for Airplan, according to Colombian legislation for 2017 was 34% and the applicable rate for Aerostar, in accordance with Puerto Rico law for 2017 was 10%.

Description of accounting policy for employee benefits [text block]

18.17) Employee benefits

The present value of the defined benefit obligations is determined by discounting the estimated future cash flows using the interest rates of high-quality corporate bonds denominated in the same currency in which the benefits will be paid and that have expiration terms that are approximate the terms of the pension obligation. In those countries where there is no deep market for such bonds, interest rates on government bonds are used.

The net interest cost is calculated by applying the discount rate to the net balance of the defined benefit obligation and the fair value of the plan assets. This cost is included in the expense for employee benefits in the consolidated statement of comprehensive income.

Gains and losses for remeasurements derived from experience adjustments and changes in actuarial assumptions are recognized in the period in which they occur directly in OCI. They are included in the accumulated results in the statement of changes in stockholders' equity and in the consolidated statement of financial position.

Variations in the present value of the defined benefit obligation that result from modifications or reductions of the plan are recognized immediately in results as past service costs.

Termination benefits

Termination benefits are paid when the employment relationship ends before the normal retirement date or when an employee voluntarily accepts the termination in exchange for these benefits. The Group recognizes termination benefits on the first of the following dates: (a) it is committed to terminate the employment relationship of employees in accordance with a detailed formal plan without having the possibility of evading its obligation, and (b) when the entity recognizes restructuring costs in accordance with IAS 37 and involves payment of termination benefits. In the case of an offer that promotes voluntary termination, termination benefits are valued based on the expected number of employees accepting the offer. Benefits that mature 12 months after the reporting date are discounted to their present value. The charge to income for the years ended December 31, 2015, 2016 and 2017 was Ps.1,133 Ps.1,237 and Ps.1,984, respectively. See Note 4.

Short-term obligations

Salaries for wages and salaries, including non-monetary benefits and accumulated sick leave, which are expected to be fully settled within 12 months after the end of the period in which the employees provide the related service, are recognized in connection with the service of employees until the end of the period and are measured by the amounts that are expected to be paid when the liabilities are settled. Liabilities are presented as current obligations for employee benefits in the consolidated statement of financial position.

Share in profits

The Group recognizes a liability and an expense for profit sharing based on a calculation that takes into account the profit attributable to the shareholders of the Company after certain adjustments. The Group recognizes a provision when it is contractually bound or when there is a past practice that generates an implicit obligation.

Description of accounting policy for issued capital [text block]

18.18) Stockholders’ equity

Capital stock, capital reserves and retained earnings are expressed at their historical cost. The capital reserves consist of the legal reserve, the reserve to repurchase own shares, and the reserve to reflect the effect of translating foreign currency.

Description of accounting policy for earnings per share [text block]

18.19) Basic and diluted earnings per share

Basic earnings per share were computed by dividing income available to the stockholders by the weighted average number of shares outstanding in 2017 and 2016. The number of shares outstanding for the periods from January 1 to December 31, 2016 and 2017 was 300 million. The basic earnings share for the year ended as of December 31, 2016 and 2017 are expressed in pesos. As of December 31, 2016 and 2017, there were no outstanding dilutive instruments.

Description of accounting policy for segment reporting [text block]

18.20) Financial reporting by segments

The segment financial information is presented in a manner that is consistent with the internal reporting provided to the General Directors in charge of making operational decisions, allocating resources and assessing the performance of the operating segments.

The Company determines and evaluates the performance of its airports on an individual basis, after allocating personnel costs and other costs of services, which are incurred by a Company's subsidiary which hires some of the Company's employees. The performance of these services is determined and assessed separately by Management. All the airports provide substantially the same services to their clients. The performance of (Services) is determined and evaluated separately by Management. All airports provide substantially the same services to their customers. Note 2 includes the financial information related to the Company's different segments, which includes Cancún and subsidiaries (Cancún), showing separately due to its importance Aerostar and Airplan, subsidiaries starting on June 1 and October 19, 2017, respectively, the Aeropueto de Villahermosa (Villahermosa), the Aeropuerto de Mérida (Mérida) and Servicios Aeroportuarios del Sureste (Servicios). The financial information of the remaining six airports, of RH Asur, S. A. de C. V. and of the holding Company (including the investment of the Company in its subsidiaries) has been grouped and is included in the “Others” column. The elimination of the investment of the Company in its subsidiaries is included in the “Consolidation Adjustments” column.

Resources are assigned to the segments based on the significance of each one to the Company's operations. Transactions among operating segments are recorded at their fair value.

As of June 1, 2017, Aerostar consolidates its shareholding as a subsidiary in the Company, increasing its shareholding from 50% to 60%, for which the recognition as Join-venture was until May 26, 2017, and for the period from June 1 to December 31, 2017, consolidates Aerostar line by line in the Company's finances.

As of October 19, 2017, Airplan, S. A. consolidates as a subsidiary into the Company.

XML

Overview:(Tables)

12 Months Ended

Dec. 31, 2017

Aerostar [Member]

Description of detailed information regarding consideration paid for business acquisition [Text Block]

The following table summarizes the consideration pertaining to Aerostar at May 26, (the combination date or date of the transaction):

	May 26,
	2017
Cash paid	Ps	726,628
Previous benefit acquired by departure of the previous shareholder		848,923
Consideration on May 26, 2017		1,575,551
Fair value of share capital held in Aerostar prior to the business combination		7,877,756
Non-controlling interest at the business combination date		6,302,205
Total purchase consideration	Ps	15,755,512

Description of detailed information regarding assets and liabilities acquired under business acquisition [Text Block]

Following are the fair value of the net assets acquired under the business combination at the acquisition date:

		Fair
		value
Assets
CURRENT:
Cash and cash equivalents	Ps	543,242
Restricted cash		16,989
Other current assets		142,410
Current assets		702,641
NON-CURRENT:
Land, furniture and equipment		135,929
Intangible assets, airport concessions - Net		19,308,402
Total non-current assets		19,444,331
Total assets	Ps	20,146,972
Liabilities
CURRENT:
Current liabilities	Ps	647,896
NON-CURRENT:
Long-term debt		8,254,620
Deferred income tax		808,894
Other non-current liabilities		286,315
Total non-current liabilities		9,349,829
Total liabilities		9,997,725
Net assets acquired under the business combination		10,149,247
Total purchase consideration		15,755,512
Goodwill at the acquisition date (Note 8.1)	Ps	5,606,265

Description of detailed information regarding assets , liabilities and non controlling interest of acquired entity [Text Block]

The Aerostar condensed financial information at December 31, 2017, which shows its significant non-controlling interest, is shown below:

	December 31
Condensed statement of financial position	2017
Cash and cash equivalents	Ps	436,774
Restricted cash		106,350
Other current assets		247,517
Total current assets		790,641
Financial liabilities:
Current liabilities		(633,084)
Working capital		157,557
Land, furniture and equipment		141,708
Intangible assets, airport concessions - Net		13,636,227
Other long term assets		584
Long term debt		(7,489,465)
Accounts payable to the Company		(1,210,088)
Deferred income tax - Net		(267,307)
Shareholders’ equity	Ps	4,969,216

	Period from
	June 1 to
Condensed statements of comprehensive income	December 31, 2017
Revenue	Ps	1,497,557
Operating cost and expenses		(1,186,028)
Comprehensive financial cost		(295,803)
Deferred income tax		(28,679)
Net income for the year		(12,953)
Foreign currency translation		254,110
Total comprehensive income for the year	Ps	241,157

Airplan [Member]

Description of detailed information regarding consideration paid for business acquisition [Text Block]

The following table summarizes the consideration pertaining to Airplan at the business combination date:

	October 19
	2017
Consideration paid on October 19, 2017	Ps	3,789,797
Non-controlling interest at the combination date		310,827
Total purchase consideration	Ps	4,100,624

Description of detailed information regarding assets and liabilities acquired under business acquisition [Text Block]

The distribution of the purchase price over the net assets acquired of Airplan at the business combination date are shown below:

	Fair
	value
Assets
CURRENT:
Cash and cash equivalents	Ps	37,716
Other current assets		189,372
Current assets		227,088
NON-CURRENT:
Land, furniture and equipment		3,400
Intangible assets, airport concessions - Net		7,232,588
Total non-current assets		7,235,988
Total assets	Ps	7,463,076
Liabilities
CURRENT:
Current liabilities	Ps	551,000
NON-CURRENT:
Bank loans		3,424,897
Deferred income tax		861,483
Other non-current liabilities		27
Total non-current liabilities		4,286,407
Total liabilities		4,837,407
Net assets acquired under the business combination		2,625,669
Total consideration		4,100,624
Goodwill at acquisition date and at December 31, 2017 (Note 8.1)	Ps	1,474,955

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Segment Information: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of operating segments [abstract]

Disclosure of operating segments [text block]

The information by segments is shown in the next page:

Year ended on December 31, 2015

										Holding &;				Consolidation
		Cancún	Aerostar (*)	Airplan (**)		Mérida		Villahermosa		services		Other		adjustment		Total
Aeronautical revenue	Ps	2,877,885			Ps	272,065	Ps	174,103	Ps		Ps	597,896	Ps		Ps	3,921,949
Non-aeronautical revenue		2,250,665				71,872		58,278				151,539		(40,413)		2,491,941
Revenue for construction services		1,846,138				204,450		61,650				468,469				2,580,707
Other revenue						27		66		1,291,669		103,380		(1,395,142)
Operating profit		3,091,271				139,649		104,466		380,856		356,655				4,072,897
Non current assets		16,758,522				1,431,440		927,019		20,091,300		4,463,032		(20,530,958)		23,140,355
Total assets		18,465,295				1,616,518		1,226,203		20,627,797		4,864,156		(20,674,085)		26,125,884
Total liabilities		5,455,499				41,073		113,681		138,598		118,547		(149,565)		5,717,833
Improvements to assets
under concession and
acquisition of furniture and
equipment in the period		2,286,134				168,817		51,754		34		399,828				2,906,567
Amortization and depreciation		(286,660)				(36,287)		(26,098)		(2,248)		(117,702)				(468,995)

Year ended on December 31, 2016

										Holding &;			Consolidation
		Cancún	Aerostar (*)	Airplan (**)		Mérida		Villahermosa		services		Other	adjustment		Total
Aeronautical revenue	Ps	3,341,882			Ps	334,163	Ps	181,123	Ps		Ps	675,026		Ps	4,532,194
Non-aeronautical revenue		2,823,209				85,203		62,356				133,830	(255)
		3,104,343
Revenue for construction services		1,896,338				98,668		44,875				77,073			2,116,954
Other revenue										1,455,486			(1,455,486)
Operating profit		3,782,382				158,770		109,398		569,516		320,762			4,932,599
Non current assets		18,586,197				1,493,544		956,551		22,257,137		4,430,600	(22,740,956)		24,983,073
Total assets		20,972,688				1,650,201		1,308,469		23,058,995		5,109,194	(22,883,456)		29,216,091
Total liabilities		6,179,313				8,056		101,197		190,378		132,130	(148,937)		6,462,137
Improvements to assets
under concession and
acquisition of furniture and
equipment in the period		1,513,550				127,787		61,651		200		111,294			1,814,482
Amortization and depreciation		(328,819)				(39,524)		(28,349)		(2,111)		(130,857)			(529,660)

(*) Subsidiary located in Puerto Rico

(**) Subsidiary located in Colombia

Year ended on December 31, 2017

												Holding &;				Consolidation
		Cancún		Aerostar (*)		Airplan (**)		Mérida		Villahermosa		Services		Other		adjustment		Total
Aeronautical revenue	Ps	3,963,324	Ps	939,042	Ps	225,693	Ps	394,531	Ps	195,554	Ps		Ps	766,075	Ps		Ps	6,484,219
Non-aeronautical revenue		3,401,235		482,590		69,071		97,656		61,909				149,240		(318)		4,261,383
Revenue for construction services		1,421,942		75,925		187,294		46,146		6,336				106,573				1,844,216
Other revenue												1,492,287				(1,429,287)
Operating profit		4,623,499		311,529		782		264,098		119,772		501,617		374,634		(4,719,098)		1,476,833
Non-current assets		17,539,396		19,831,755		7,107,932		1,497,095		935,624		25,176,942		4,430,766		(25,693,269)		50,826,241
Total assets		20,486,290		20,609,156		7,327,398		1,769,962		1,227,172		25,693,958		5,193,436		(25,693,269)		56,614,103
Total liabilities		7,932,392		9,599,943		5,092,968		(180)		82,802		131,983		85,894				22,925,802
Fixed and intangible assets acquired				13,390,511		7,235,988												20,626,499
Exchange rate translation				686,198		161,277												847,475
Commercial right´s				6,053,820														6,053,820
Improvements to assets
under concession and
acquisition of furniture and
equipment in the period		1,009,625		139,078		189,536		50,021		8,965		813		97,174				1,495,212
Amortization and depreciation		(457,447)		(437,852)		(54,998)		(46,470)		(29,892)		(700)		(138,755)				(1,166,114)

(*) Subsidiary located in Puerto Rico

(**) Subsidiary located in Colombia

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Revenues: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of detailed information about concession income [Table Text Block]

Below is the table for Airplan concession income for the period October 19, 2017 to December 31, 2017:

Income associated with intangible compulsory works (i)	Ps	35,154
Income associated with intangible complementary works (ii)		152,140
	Ps	187,294

⁽ⁱ⁾ Compulsory works. These are the works that the concessionaire undertakes to execute in compliance with the Airport Adjustment and Modernization Plan.

⁽ⁱⁱ⁾ Complementary works. These are the works that are not part of the Adequacy and Modernization Plan but are executed at the proposal of the concessionaire, or at the request of the grantors.

Disclosure of detailed information regarding different sources of commercial revenue [Table Text Block]

The following table sets forth the revenue from commercial activities for the years indicated.

	Year ended of December 31,
	2015		2016		2017
Commercial revenues:
Retail stores	Ps	712,647	Ps	904,465	Ps	1,194,772
Duty free shops		531,311		640,793		881,705
Food and beverage		334,685		439,101		609,304
Advertising revenues		121,860		122,941		139,545
Car rental companies		161,937		221,100		379,162
Banking and currency exchange services		69,036		86,780		97,311
Teleservices		8,242		10,869		12,973
Ground transportations		2,522		2,562		5,729
Other services		153,986		217,523		325,296
Access fees on non-permanent ground transportation		38,476		42,917		47,756
Car parking and related access fees		75,846		83,493		183,977
Total commercial revenues (*)	Ps	2,210,548	Ps	2,772,544	Ps	3,877,530

^(*) This line includes the concepts of access fees and car parking.

Disclosure of detailed information regarding minimum future lease income receivable [Table Text Block]

For the years ended December 31:

2018	Ps	3,986,487
2019		2,584,950
2020		2,358,698
2021		2,054,600
2022 to 2027		11,100,288
Total	Ps	22,085,023

Airports Law and Regulations [Member]

Disclosure of detailed information on revenue [text block]

The Company's income at December 31, 2015, 2016 and 2017, using the classifications established in the Mexican Airports Law and Regulations, is as follows:

	January 1 to December 31,
	2015		2016		2017
Regulated services:
Airport services (*)	Ps	4,115,738	Ps	4,762,538	Ps	6,743,831
Non-regulated services:
Access fees on non-permanent ground transportation		38,476		42,917		47,756
Car parking and related access fees		75,846		83,493		183,977
Other access fees		4,879		8,634		11,130
Commercial services (**)		2,096,226		2,646,134		3,645,797
Other services		82,725		92,821		113,111
Total non-regulated services (***)		2,298,152		2,873,999		4,001,771
Construction services		2,580,707		2,116,954		1,844,216
Total	Ps	8,994,597	Ps	9,753,491	Ps	12,589,818

^(*) In 2017, this line in the statement of income includes regulated services from Aerostar of Ps.939,042 and from Airplan of Ps.225,693, once they were incorporated into the Company's financial statements as of June 1, 2017 and October 19, 2017, respectively.

^(**) Commercial revenues do not include access fees and car parking.

^(***) This line, in the statement of income, includes the items of complementary and airport services that amount to a total of Ps.193,789, Ps.230,344 and Ps.259,612 in 2015, 2016 and 2017, respectively.

XML

Costs and expenses by nature: (Tables)

12 Months Ended

Dec. 31, 2017

Expenses by nature [abstract]

Disclosure of general and administrative expense [text block]

	January 1 to December 31,
	2015		2016		2017
Termination benefits (Note 18.17)	Ps	1,133	Ps	1,237	Ps	1,984
Short term benefits		499,035		531,246		772,129
Employees’ statutory profit sharing		5,085		6,126		6,359
Electric power		92,737		108,910		234,879
Maintenance and conservation		214,439		229,904		401,479
Professional fees		70,064		103,918		217,930
Insurance and bonds		31,919		30,157		86,838
Surveillance services		125,176		144,462		207,303
Cleaning services		77,274		90,285		142,531
Technical assistance (Note 15.4)		239,175		288,111		346,487
Right of use of assets under concession (DUAC) (1)		291,505		344,939		468,695
Amortization and depreciation of intangible assets,
furniture and equipment		468,996		529,660		1,166,114
Goodwill impairment (Note 8.1)						4,719,096
Consumption of commercial items		139,603		180,636		252,602
Construction services (Note 3.1.3)		2,580,707		2,116,954		1,898,550
Financial assets impairment						45,687
Other		84,852		114,347		144,322
Total aeronautical and non-aeronautical services costs,
costs of construction services and administrative expenses	Ps	4,921,700	Ps	4,820,892	Ps	11,112,985

⁽¹⁾ As of December 31, 2017, DUAC by Ps.406,733 correspond to the consideration for the concessions in Mexico, which is equivalent to 5% of the gross revenues of each of the concessions, Ps.56,005 correspond to the consideration for the Airplan concession at 19% of gross revenues for the period from October 19 to December 31, 2017 and Ps.5,957 to the consideration for the Aerostar concession at 5% of the airport's gross receipts for the period from June 1, to December 31, 2017.

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Cash and cash equivalents: (Tables)

12 Months Ended

Dec. 31, 2017

Cash and Cash Equivalents [Abstract]

Disclosure of detailed information about cash and cash equivalents [text block]

 

	December 31,
		2016		2017
Cash and cash held at banks		Ps	3,142,810	Ps	4,417,791
Short term investments			354,825		240,701
Fiduciary rights (*)					18,962
Total cash and cash equivalents		Ps	3,497,635	Ps	4,677,454

^(*)       Corresponds to the Airplan Fiduciary's agreement 2875, signed with Fiduciaria Bancolombia to administer the resources of the concession contract. See Notes 8.2 and 18.5.

XML

Accounts receivable - Net: (Tables)

12 Months Ended

Dec. 31, 2017

Trade and other receivables [abstract]

Disclosure of detailed information about trade and other receivables [text block]

 

	December 31,
		2016		2017
Clients		Ps	592,583	Ps	858,900
Less: impairment provision			(127,711)		(173,398)
Current portion of accounts receivable			464,872		685,502
Long term accounts receivable from joint ventures
(Notes 9 and 15.1) (*)			1,886,546
Total accounts receivable		Ps	2,351,418	Ps	685,502

^(*) In 2013, the Company granted a loan to Aerostar of Ps.1,254,800 (USD100,000) at an annual interest rate of LIBOR plus 2.10% valid for the long term. As of June 1, 2017, derived from the incorporation of Aerostar in the consolidation of the Company, this loan forms part of the elimination entries.

Disclosure of financial assets that are either past due or impaired [text block]

 

	December 31,
		2016		2017
Three months		Ps	51,820	Ps	137,155
From three to six months			592		71,049
More than six months			146,616		157,999
			199,028		366,203
Minus:
Past due accounts receivable not impaired			71,317		192,805
Amount of the estimation for impairment		Ps	127,711	Ps	173,398

The movements in the impairment provision are as follows:

Provision for impairment at January 1, 2015	Ps	130,185
Application to the provision during the period		(1,964)
Provision for impairment at January 1, 2016		128,221
Application to the provision during the period		(510)
Provision for impairment at December 31, 2016		127,711
Application to the provision during the period		36,621
Aerostar’s provision impairment		6,690
Airplan’s provision impairment		2,376
Provision for impairment at December 31, 2017	Ps	173,398

XML

Land, furniture and equipment - Net: (Tables)

12 Months Ended

Dec. 31, 2017

Property, plant and equipment [abstract]

Disclosure of detailed information about property, plant and equipment [text block]

At December 31, 2016 and 2017, the land furniture and equipment are made up as follows:

											Foreign
					Disposals				Business		currency				Disposals
	12/31/2015		Additions		transfers		12/31/2016		acquisition		translation		Additions		transfers		12/31/2017
Land	Ps	302,050					Ps	302,050	Ps	290	Ps	7					Ps	302,347
Furniture &;
equipment		55,480	Ps	5,008	Ps	(487)		60,001		8,801		380	Ps	5,852	Ps	(2,326)		72,708
Machinery &;
equipment										54,723		2,843		7,817				65,383
Computer
equipment										12,231		464		2,872				15,567
Transport
equipment										18,980		975		958				20,913
Improvements to
leased premises										42,532		2,384						44,916
Accumulated
Depreciation		(35,617)		(3,822)		487		(38,952)						(22,903)		2,326		(59,529)
		321,913		1,186				323,099		137,557		7,053		(5,404)				462,305
Equipment in transit										1,772		92		9,069				10,933
	Ps	321,913	Ps	1,186	Ps		Ps	323,099	Ps	139,329	Ps	7,145	Ps	3,665	Ps		Ps	473,238

XML

Intangible assets, airport concessions - Net: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of detailed information about intangible assets [text block]

The movements of intangible assets of airport concessions in the periods presented in the consolidated financial statements are as follows:

									Foreign
							Business		currency		Additions /
	12/31/2015		Additions		12/31/2016		Acquisition		translation		Impairment		12/31/2017
Concessions
(Regulated activity)	Ps	25,854,357	Ps	1,784,762	Ps	27,639,119	Ps	20,487,170	Ps	484,045	Ps	1,449,729	Ps	50,060,063
Licenses and ODC		191,623		13,904		205,527						18,915		224,442
Commercial Right's
(Unregulated activity)								6,053,820		140,951				6,194,771
Goodwill								7,081,220		215,334				7,296,554
Goodwill’s impairment												(4,719,096)		(4,719,096)
Accumulated
Amortization		(7,023,669)		(536,851)		(7,560,520)						(1,143,211)		(8,703,731)
	Ps	19,022,311	Ps	1,261,815	Ps	20,284,126	Ps	33,622,210	Ps	840,330	Ps	(4,393,663)	Ps	50,353,003

(*) The most significant additions includes: a) Improvements in the installation of the Terminal 3 building at Cancún Airport; b) Construction of the new Terminal 4 building at Cancún Airport; c) Supply and installation of passenger boarding bridges in the Terminals 3 and 4 buildings; d) Expansion of the commercial platform of the Terminal 3 building; e) Construction of earth fills and pavement for the Terminal 4 platform, and f) Construction of wheel treads, connector, and headrests in Cancún Airport.

Disclosure of detailed information about allocation of goodwill for operating segment [Text Block]

Goodwill is assigned to the operating segments that are expected to benefit from the synergies of the business combination, regardless of whether other assets or liabilities of the acquired entities are assigned. The following is a summary of the allocation of goodwill for each operating segment

	2017
Aerostar Net Goodwill	Ps	887,169
Airplan Goodwill (Note 1)		1,474,955
	Ps	2,362,124

Disclosure of detailed information about goodwill after adjusting impairment loss [Text Block]

As a result of the passage of Hurricane Maria on the island of Puerto Rico on September 20, 2017, which affected the infrastructure of the LMM airport as well as causing severe damage to the rest of the island that impacted the expected future flows of Aerostar the Company recognized an impairment of Ps.4,719,096 in cost of aeronautical and non-aeronautical services within operating costs and expenses. As a result of the above, the Administration also carried out impairment tests on the intangible asset of the concession, without determining a deterioration to be recognized. Remaining a net effect, as shown below:

	2017
Aerostar Goodwill (Note 1)	Ps	5,606,265
Goodwill Impairment		(4,719,096)
	Ps	887,169

Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [text block]

For the determination of fair value less costs to sell, projections of cash flows approved by the Administration are used, covering a period of 36 years in the case of Aerostar and 15 years in the case of Airplan, which are the remaining years of the airport concessions. For each CGU with a significant amount of goodwill, the key assumptions are the following:

	2017
	Airplan			Aerostar
Discount rate		10.07	%		10.00	%
Discount rate for the value in use method		15.12	%		11.75	%
Annual average of revenue growth		2.00	%		3.47	%
Level of the fair value hierarchy of value
recoverable from the CGU		3			3

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Investment in joint ventures accounted for under the equity method: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of joint ventures [abstract]

Disclosure of reconciliation of summarised financial information of joint venture accounted for using equity method to carrying amount of interest in joint venture [text block]

CONDENSED STATEMENT OF FINANCIAL POSITION

	December 31,		May 26,
	2016		2017
Cash and cash equivalents	Ps	719,254	Ps	543,242
Restricted cash and cash equivalents		21,044		16,989
Other current assets		201,992		142,410
Current assets		942,290		702,641
Financial liabilities		(92,367)
Other current liabilities		(615,709)		(647,896)
Current liabilities		(708,076)		(647,896)
Working capital		234,214		547,452
Land, furniture and equipment		152,758		135,373
Intangible assets, airport concessions - Net		14,661,436		13,254,582
Other non-current assets		571		556
Non-current assets		14,814,765		13,390,511
Long term debt		(7,693,682)		(6,824,310)
Loan payable to the Company (Note 13.1)		(1,886,546)		(1,430,310)
Other non-current liabilities		(265,040)		(286,325)
Deferred taxes – Net		(225,107)		(203,502)
Non-current liabilities		(10,070,375)		(8,744,447)
Stockholders’ equity	Ps	4,978,604	Ps	4,700,809

CONDENSED STATEMENT OF COMPREHENSIVE INCOME

					Period from
	For the year ended				January 1,
	on December 31,				to May 26,
	2015		2016		2017
Total revenue	Ps	2,049,611	Ps	2,526,371	Ps	1,170,888
Operating costs and expenses		(1,456,915)		(1,650,890)		(694,435)
Comprehensive financing loss - Net		(444,726)		(535,053)		(229,789)
Deferred income taxes		(46,124)		(51,931)		(21,974)
Net income for the period		101,846		288,497		224,690
Effect for foreign currency conversion		545,514		800,692		(475,233)
Comprehensive income	Ps	647,360	Ps	1,089,189	Ps	(250,543)

Disclosure of interests in associates [text block]

 

	December 31,				May 26,
		2016				2017
Initial capital contribution to Aerostar		Ps	3,016,003			Ps	3,016,003
Accumulated earnings (deficit)			(112,162)				176,335
Net income for the period			288,497				224,690
Other accumulated comprehensive income			985,574				1,786,266
Other comprehensive income			800,692				(502,485)
Net assets at period closing			4,978,604				4,700,809
Equity percentage in joint business			50	%			50	%
Carrying value		Ps	2,489,302			Ps	2,340,405

				From January  1st
	December 31,			to May 26,
	2016			2017
Net income for the period	Ps	288,497		Ps	224,690
Equity percentage in joint venture		50	%		50	%
Equity method income	Ps	144,248		Ps	112,345

XML

Accounts payable and accrued expenses: (Tables)

12 Months Ended

Dec. 31, 2017

Trade and other payables [abstract]

Disclosure of Detailed Information on Accounts payable and accrued expenses [text block]

At December 31, 2016 and 2017, the balances are as follows:

	December 31,
	2016		2017
Suppliers	Ps	11,401	Ps	428,881
Taxes payable		116,643		157,387
Use rights of assets under concession		109,437		127,076
Accounts payable to related parties (Note 15.1)		71,725		87,951
Salaries payable		71,022		111,984
Sundry creditors for services provided		94,349		583,059
Interest payable of the Bank Loans (Note 12)				340,288
Accounts payable to contractors		657		265,236
Total	Ps	475,234	Ps	2,101,862

XML

Bank loans: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of loans and advances to banks [Abstract]

Disclosure of detailed information about borrowings [text block]

At December 31, 2017, the Company has used the total amount of these credit lines as shown below:

									Term
	Credit line		Credit line		Principal		Commissions and						Fair
Bank	foreign currency		used in pesos		amortization		interests - Net		Short		Long		value
BBVA Bancomer, S. A. (*)			Ps	2,000,000	Ps		Ps	14,875	Ps	14,875	Ps	2,000,000	Ps	2,089,786
BBVA Bancomer, S. A				4,000,000		4,000,000
Santander				2,000,000				(10,576)		2,957		1,986,467		2,091,065
BBVA Bancomer, S. A. *	USD	72,500		1,425,560				3,215		5,675		1,423,100		1,540,499
Bank of America Merrill
Lynch (*)	USD	72,500		1,425,560				3,215		5,675		1,423,100		1,535,374
Total Mexico	USD	145,000	Ps	10,851,120	Ps.	4,000,000	Ps	10,729	Ps	29,182	Ps	6,832,667	Ps.	7,256,724
Bancolombia	COP	150,000,000		1,295,381				(2,595	Ps.	103,100	Ps.	1,189,686	Ps.	1,204,983
CorpBanca		102,000,000		718,021				(633)		2,840		810,284		819,389
Banco Bogotá		37,000,000		813,757				(1,047)		34,159		714,374		297,229
Banco Davivienda		90,000,000		328,112				(1,159)		2,488		292,905		722,990
Banco de Occidente		37,000,000		295,186				(1,258)		1,031		292,898		297,229
Banco Popular		8,000,000		63,824				(941)		369		62,514		64,266
Banco AV Villas		8,000,000		63,824				(49)		223		63,552		64,266
Serfinansa		8,000,000		63,824				(1,243)		79		62,502		64,266
Total Airplan	COP	440,000,000	Ps	3,641,929			Ps	(8,925)	Ps	144,289	Ps	3,488,715	Ps	3,534,614
			Ps	14,493,049	Ps	4,000,000	Ps	1,804	Ps.	173,471	Ps	10,321,382	Ps	10,791,338

^(*) The following variables were used to determine the fair values of the loans at December 31, 2017:

As a result of the business combination in Airplan on October 19, 2017, a fair value of the syndicated loan, valued at its amortized cost, was determined, increasing its value by Ps.605,382. See Note 1.

Mexico:

FRA LIBOR Curve 6months

FRA TIIE curve 28

LIBOR discount curve 3 months

Implicit curve weights

Probability of default ASUR

Airplan:

Spot rate (DTF) at the start date of each of the provisions

Colombia reference rate

Level 2 of fair value hierarchy.

At December 31, 2016, the Company used the total amount of these credits as shown below:

Term

Credit line

Credit line

Principal

Commissions and

Fair

Bank

used in dollars

used in pesos

amortization

interests - Net

Short

Long

value

BBVA Bancomer, S. A. (*)

USD

107,500

Ps

2,216,585

Ps

Ps

13,803

Ps

29,168

Ps

2,201,220

Ps

2,387,179

Bank of America Merrill

Lynch (*)

107,500

2,216,585

13,803

29,168

2,201,220

2,378,451

USD

215,000

Ps

4,433,170

Ps

Ps

27,606

Ps

58,336

Ps

4,402,440

Ps

4,765,630

⁽*⁾ The variables used to determine the fair values of loans are:

6-month LIBOR curve

LIBOR discount curve rating B

Credit risk of PIP credit curves

Additionally, the calculation is prepared on the basis of a Bloomberg LIBOR discount rate, with the fair value at hierarchy level 2.

XML

Long term debt: (Tables)

12 Months Ended

Dec. 31, 2017

Borrowings [abstract]

Disclosure of detailed information about borrowings [text block]

At December 31, 2017, the Company has used the total amount of these credit lines as shown below:

									Term
	Credit line		Credit line		Principal		Commissions and						Fair
Bank	foreign currency		used in pesos		amortization		interests - Net		Short		Long		value
BBVA Bancomer, S. A. (*)			Ps	2,000,000	Ps		Ps	14,875	Ps	14,875	Ps	2,000,000	Ps	2,089,786
BBVA Bancomer, S. A				4,000,000		4,000,000
Santander				2,000,000				(10,576)		2,957		1,986,467		2,091,065
BBVA Bancomer, S. A. *	USD	72,500		1,425,560				3,215		5,675		1,423,100		1,540,499
Bank of America Merrill
Lynch (*)	USD	72,500		1,425,560				3,215		5,675		1,423,100		1,535,374
Total Mexico	USD	145,000	Ps	10,851,120	Ps.	4,000,000	Ps	10,729	Ps	29,182	Ps	6,832,667	Ps.	7,256,724
Bancolombia	COP	150,000,000		1,295,381				(2,595	Ps.	103,100	Ps.	1,189,686	Ps.	1,204,983
CorpBanca		102,000,000		718,021				(633)		2,840		810,284		819,389
Banco Bogotá		37,000,000		813,757				(1,047)		34,159		714,374		297,229
Banco Davivienda		90,000,000		328,112				(1,159)		2,488		292,905		722,990
Banco de Occidente		37,000,000		295,186				(1,258)		1,031		292,898		297,229
Banco Popular		8,000,000		63,824				(941)		369		62,514		64,266
Banco AV Villas		8,000,000		63,824				(49)		223		63,552		64,266
Serfinansa		8,000,000		63,824				(1,243)		79		62,502		64,266
Total Airplan	COP	440,000,000	Ps	3,641,929			Ps	(8,925)	Ps	144,289	Ps	3,488,715	Ps	3,534,614
			Ps	14,493,049	Ps	4,000,000	Ps	1,804	Ps.	173,471	Ps	10,321,382	Ps	10,791,338

^(*) The following variables were used to determine the fair values of the loans at December 31, 2017:

As a result of the business combination in Airplan on October 19, 2017, a fair value of the syndicated loan, valued at its amortized cost, was determined, increasing its value by Ps.605,382. See Note 1.

Mexico:

FRA LIBOR Curve 6months

FRA TIIE curve 28

LIBOR discount curve 3 months

Implicit curve weights

Probability of default ASUR

Airplan:

Spot rate (DTF) at the start date of each of the provisions

Colombia reference rate

Level 2 of fair value hierarchy.

At December 31, 2016, the Company used the total amount of these credits as shown below:

Term

Credit line

Credit line

Principal

Commissions and

Fair

Bank

used in dollars

used in pesos

amortization

interests - Net

Short

Long

value

BBVA Bancomer, S. A. (*)

USD

107,500

Ps

2,216,585

Ps

Ps

13,803

Ps

29,168

Ps

2,201,220

Ps

2,387,179

Bank of America Merrill

Lynch (*)

107,500

2,216,585

13,803

29,168

2,201,220

2,378,451

USD

215,000

Ps

4,433,170

Ps

Ps

27,606

Ps

58,336

Ps

4,402,440

Ps

4,765,630

⁽*⁾ The variables used to determine the fair values of loans are:

6-month LIBOR curve

LIBOR discount curve rating B

Credit risk of PIP credit curves

Additionally, the calculation is prepared on the basis of a Bloomberg LIBOR discount rate, with the fair value at hierarchy level 2.

XML

Stockholders' Equity: (Tables)

12 Months Ended

Dec. 31, 2017

Share capital, reserves and other equity interest [Abstract]

Disclosure of classes of share capital [text block]

	Total shares				Capital Stock as of
					December 31,
Description	2016		2017		2016		2017
B Series		277,050,000		277,050,000	Ps	7,173,079	Ps	7,173,079
BB Series		22,950,000		22,950,000		594,197		594,197
Total		300,000,000		300,000,000	Ps	7,767,276	Ps	7,767,276

Disclosure of detailed information on future tax incentive on dividends [text block]

The incentive is applicable provided that such dividends or profits were generated in 2016 and 2017 and are reinvested in the legal entity that generated such profits. The incentive consists of a tax credit equal to the amount obtained by applying the dividend or utility is distributed, which corresponds to a yearly percentage distribution as follows:

Year of dividend or profit distribution	Percentage applicable to the amount of the dividend or distributed profit (%)
2017	1
2018	2
2019 onwards	5

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Income tax incurred and deferred: (Tables)

12 Months Ended

Dec. 31, 2017

Income taxes [Abstract]

Disclosure of deferred taxes [text block]

The analysis of deferred tax assets and liabilities is as follows:

	December 31,
Deferred tax asset:	2016		2017
Deferred tax recoverable within the following 12 months	Ps	30,615	Ps	73,710
Deferred tax recoverable after 12 months		33,930		253,010
Recoverable asset tax		152,785
		217,330		327,020
Deferred tax liability:
Deferred tax payable after 12 months		(1,673,350)		(3,360,950)
Deferred tax liability - Net	Ps	(1,456,020)	Ps	(3,033,930)

Components of income tax expense [text block]

The IT provision at December 31, 2015, 2016 and 2017 is as follows:

Mexico:

	2015		2016		2017
Current IT	Ps	1,198,273	Ps	1,502,976	Ps	1,908,646
Deferred IT		(103,410)		(101,792)		(312,091)
IT provision	Ps	1,094,863	Ps	1,401,184	Ps	1,596,555
Aerostar:
IT deferred for the period from June 1
to December 31, 2017	Ps		Ps		Ps	28,678
Airplan:
Current IT	Ps		Ps		Ps	19,551
Deferred IT						(9,337)
IT Provision Airplan for the period
October 19, to December 31, 2017	Ps		Ps		Ps	10,214
Total IT provision	Ps	1,094,863	Ps	1,401,184	Ps	1,635,447

Reconciliation of income tax rate [text block]

The reconciliation between the statutory and effective income tax rates is shown below:

	2015			2016			2017
Consolidated income before IT and joint venture equity method:	Ps	3,962,934		Ps	4,887,130		Ps	8,498,889
Plus (Less):
Net income before taxes of Airplan and Aerostar		16,011
Net income before taxes of subsidiaries in Mexico not subject to IT		(118,981)			(56,415)			(62,327)
Income before provisions for income taxes		3,843,953			4,830,715			8,452,573
Statutory IT rate		30	%		30	%		30	%
IT that would result from applying the IT rate to book profit before income taxes		1,153,186			1,449,214			2,535,772
Non-deductible items and other permanent differences		8,095			11,908			8,693
Gain on business combination		(2,108,760)
Goodwill impairment		1,415,729
Annual adjustment for tax inflation		(10,924)			(10,974)			(2,406)
Temporary differences		(56,156)			(91,928)			(249,336)
Recognition of deferred income tax at the Huatulco Airport (1)					44,020
Initial recognition for deferred IT consolidation in Aerostar (2)								28,678
Initial recognition for IT consolidation in Airplan (2)								10,214
Other		662			(1,056)			(3,137)
IT provision	Ps	1,094,863		Ps	1,401,184		Ps	1,635,447
Effective ISR rate		28	%		29	%		19	%

⁽¹⁾ Based on the tax projections at December 31, 2016, the Huatulco Airport is expected to pay income tax in the future. Accordingly, the Company decided to recognize deferred income tax. This recognition increased the effective rate by 3%.

⁽²⁾ As of June 1, 2017, Aerostar consolidates into the Company and as of October 19, 2017, Airplan consolidates financially into the Company.

Disclosure of temporary difference, unused tax losses and unused tax credits [text block]

Following are the principal temporary differences with respect to deferred tax:

	Period ended on
	December 31,
	2016		2017
Current deferred income tax:
Advances (Airplan)	Ps		Ps	25,271
Accrued liabilities		30,615		48,439
Current deferred income tax asset		30,615		73,710
Non-current deferred income tax:
Bank loan’s fair value		208,394
Allowance for doubtful accounting		33,930		44,916
Non-current deferred income tax asset		33,930		253,310
Deferred income tax asset		64,545		327,020
Non-current deferred income tax liability:
Fixed assets and concession (*)		(1,672,641)		(2,900,893)
Deferred income (Airplan)				(458,682)
Amortization of deferred expenses		(709)		(1,375)
Non-current deferred income tax liability		(1,673,350)		(3,360,950)
Total deferred income tax, net		(1,608,805)		(3,033,930)
Recoverable asset tax		152,785
Deferred income tax liability, net	Ps	(1,456,020)	Ps	(3,003,930)

^(*) Includes Ps.267,307 and Ps.357,563 from Aerostar and Airplan only in, 2017.

Disclosure of detailed information about of changes in deferred tax asset and liability [text block]

The net movements of the deferred tax asset and liability for the year are as follows:

	Provision
	for loan				Recoverable		Foreign
	portfolio		Concessioned		asset		currency
	impairment		assets		tax		translarion		Other		Total
Balances at December 31, 2015	Ps	(31,576)	Ps	1,766,981	Ps	(186,875)	Ps		Ps	(24,808)	Ps	1,523,722
Recovery of asset tax						34,090						34,090
Tax charged or credited in the
statement of income		(2,354)		(94,340)						(5,098)		(101,792)
		(2,354)		(94,340)		34,090				(5,098)		(67,702)
Balances at December 31, 2016		(33,930)		1,672,641		(152,785)				(29,906)		1,456,020
Recovery of asset tax						152,785						152,785
Initial recognition of Aerostar				203,512								203,512
Initial valuation in Aerostar
investment				605,382								605,382
Net assets acquired under
the business combination of Airplan				281,899								281,899
Effect of foreign currency
translation Aerostar								35,117				35,117
Initial recognition of Airplan				356,296						223,289		579,585
Effect of foreign currency
translation Airplan								7,458		4,922		12,380
				1,447,089		152,785		42,575		228,211		1,870,660
Tax charged or credited in the
statement of income:
Airplan				(6,191)						(3,146)		(9,337)
Aerostar				28,678								28,678
Mexico		(10,986)		(283,899)		-				(17,206)		(312,091)
		(10,986)		(261,412)		-				(20,352)		(292,750)
Balances at December 31, 2017	Ps	(44,916)	Ps	2,858,318	Ps	-	Ps	42,575	Ps	177,953	Ps	3,033,930

Disclosure of detailed information about tax credits [text block]

At December 31, 2016 and 2017, the tax credits are as follows:

	December 31,
	2016		2017
Income tax	Ps	101,664	Ps	74,885
Asset tax (*)		10,074		8,006
	Ps	111,738	Ps	82,891

(*) The balance as of December 31, 2017, was requested in return, at the date of this financial statements issuance said balance has not yet been recovered.

Disclosure of detailed information on unused tax losses explanatory

At December 31, 2017, the Aerostar had cumulative tax loss carry forwards whose right to be amortized against future taxable income expires as shown below:

					Year of
Year of loss					expiration
2012	USD	9,201	Ps.	180,892	2027
2013		52,946		1,040,916	2028
2014		33,424		657,116	2029
2015		44,188		868,736	2030
2016		58,365		1,147,456	2031
Total	USD	198,124	Ps.	3,895,118

XML

Balances and transactions with related parties: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of transactions between related parties [line items]

Disclosure of balances receivable from or payable to related parties [Text Block]

At December 31, 2016 and 2017, respectively, the balances receivable from (payable to) related parties shown in the consolidated statement of financial position are comprised as follows:

	2016		2017
Accounts receivable:
(*) Aerostar (joint venture/loan) (Notes 6)	Ps	1,886,546	Ps
Autobuses de Oriente ADO, S. A. de C. V. (Shareholder/services)				47
Autobuses Golfo Pacífico, S. A. de C. V. (Shareholder/services)				390
	Ps	1,886,546	Ps	437
(**) Accounts payable and accumulated expenses (Note 10):
Inversiones y Técnicas Aeroportuarias, S. A. de C. V.
(Shareholder/technical assistance)	Ps	(71,837)	Ps	(82,771)
CAH Colombia, S. A. (Shareholder/technical assistance)				(4,133)
Lava Tap de Chiapas, S. A. de C. V.
(Key Management personnel/services)		(338)		(1,047)
		(71,725)		(87,951)
Net	Ps	1,814,821	Ps	(87,514)

(*) At December 31, 2016, the amount of the loan were Ps.1,874,129 plus Ps12,417 due to interest accrued on the year. In 2016 and 2017 the capital was paid in the amount of Ps.325,693 and Ps.304,564, respectively.

⁽**⁾ These are accounts with terms of less than one year under similar market conditions.

Disclosure of transactions between related parties [text block]

At December 31, 2015, 2016 and 2017, the following transactions were held with related parties, which were set at the same prices and conditions as those that would have been used in comparable operations by third parties:

	2015		2016		2017
Commercial income:
Autobuses de Oriente, S. A. de C. V. (Stockholder)	Ps	8,274	Ps	9,615	Ps	11,770
Autobuses Golfo Pacífico, S. A. de C. V. (Stockholder)		5,560		5,947		6,382
Coordinados de Mexico de Oriente, S. A. de C. V.
(Stockholder)		141		134		139
Interest income:
Aerostar (joint venture) (Note 8)		65,705		83,483		69,202
Expenses:
Stockholders:
Technical assistance (Note 13.4)		(239,175)		(288,111)		(346,487)
Related parties:
Administrative services
Leasing		(4,084)		(4,825)		(5,019)
Cleaning services		(9,084)		(9,541)		(10,239)
Other		(1,006)		(2,473)		(598)

Disclosure of detailed information about the benefits granted to key management personnel [text block]

Key personnel include directors, members of the Steering Committee, and Committees. In the years ended on December 31, 2015, 2016 and 2017, the Company granted the following benefits to the key Management personnel, the Steering Committee and the different Company Committees:

	2015		2016		2017
Short term salaries and other benefits paid to key
Personnel	Ps	34,693	Ps	40,062	Ps	84,642
Fees paid to the Board of Directors and Committees		5,975		4,766		4,974

^(*) In 2017, includes cost of Ps.34,879 and Ps.3,268, respectively by key personnel of directors of Aerostar and Airplan, who as of June 1, 2017 and October 19, 2017, respectively, were consolidated into the Company.

XML

Commitments and contingencies: (Table)

12 Months Ended

Dec. 31, 2017

commitments and contingent liabilities [Abstract]

Disclosure Of Finance Lease And Operating Lease By Lessee Explanatory [text block]

The total minimum future payments derived from the non-cancellable operating lease agreement that shall be covered in the future are as follows:

Up to one year	Ps	5,372
Between one and three years		10,745
Total	Ps	16,117

Disclosure Of Commitments Explanatory [text block]

At December 31, 2016, the investment commitments under this MDP are as follows:

Period	Amount
2018	Ps	340,645	(1)

XML

Summary of the main accounting policies: (Tables)

12 Months Ended

Dec. 31, 2017

Significant accounting policies [Abstract]

Company consolidated subsidiaries [text block]

The Company's consolidated subsidiaries in which it holds shares at December 31, 2016 and 2017 are as follows:

	Shareholding
	percentage (%)		Main activity
Aeropuerto de Cancún, S. A. de C. V. (*)(**)	100.00	%	Airport services
Aeropuerto de Cozumel, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Mérida, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Huatulco, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Oaxaca, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Veracruz, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Villahermosa, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Tapachula, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Minatitlán, S. A. de C. V.	100.00	%	Airport services
Cancún Airport Services, S. A. de C. V. (***)	100.00	%	Airport services
RH Asur, S. A. de C. V.	100.00	%	Administrative services
Servicios Aeroportuarios del Sureste, S. A. de C. V.	100.00	%	Administrative services
Asur FBO, S. A. de C. V. (***)	100.00	%	Administrative services
Caribbean Logistics, S. A. de C. V. (***)	100.00	%	Cargo services
Cargo RF, S. A. de C. V. (***)	100.00	%	Cargo services
Sociedad Operadora de Aeropuertos Centro Norte, S. A. (***)	92.42	%	Airport services
Aerostar Airport Holdings, LLC (***)	60.00	%	Airport services

^(*) Cancún held a 50% stake in Aerostar until May 26, 2017, which was accounted as a joint venture. See Note 9. As of May 26, 2017, the Cancún Airport acquired an additional 10% equity interest in Aerostar. As a result of this acquisition, the Company has a 60% shareholding and now controls Aerostar, therefore Aerostar is consolidated in the Company’s financial statements.

^(**) Aeropuerto de Cancún, S. A. de C. V. acquired on October 19, 2017 a 92.42% equity interest in Sociedad Operadora de Aeropuertos Centro Norte, S. A. (Airplan), Company that holds the concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the Enrique Olaya Herrera in Medellín, José María Córdoba in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports, and from that date Airplan’s results have been incorporated line-by-line in the Company’s and Cancún Aiport’s financial statements.

⁽***⁾ These subsidiaries sub-consolidate at the Cancún Airport.

Description of detailed information about useful life of assets [Text Block]

The useful lives at the acquisition date of the furniture and equipment are as shown below:

	2016	2017
Furniture equipment	10%	10 to 20%
Machinery	10%	10 to 20%
Computer equipment	33%	33 to 20%
Transportation equipment	25%	20 to 25%
Improvements to leased premises		10%

Shedule of estimated useful lives [Text Block]

The estimated useful lives at December 31, 2017 are as follows:

Licenses	31 years
ODC	31 years
Commercial Rights of Aerostar	36 years
Commercial Rights of Airplan	15 years

XML

Financial risk management: (Tables)

12 Months Ended

Dec. 31, 2017

Financial risk management [Abstract]

Disclosure of effect of changes in foreign exchange rates [text block]

At December 31, 2016 and 2017, the Company is exposed to exchange rate risk for monetary position, as shown below:

	December 31,
	2016		2017
Monetary position:
Asset	USD	188,765	USD	50,905
Liability		218,125		148,417
	USD	(29,360)	USD	(97,512)

Disclosure of maturity analysis for non-derivative financial liabilities [text block]

The amounts presented in the table reflect the undiscounted cash flows, including contractual interest.

	Under		Between 3 months		Between 1		Between 2 and
At December 31, 2017	3 months		and one year		and 2 years		5 years
Bank loans and interest	Ps	177,080	Ps	606,433	Ps	880,357	Ps	12,146,826
Long term debt		337,107		317,789		633,140		11,442,620
Suppliers		428,881
Accounts payable and accrued expenses		1,175,306

	Under		Between 3 months		Between 1		Between 2 and
At December 31, 2016	3 months		and one year		and 2 years		5 years
Bank loans and interest	Ps	58,336	Ps	44,332	Ps	709,307	Ps	3,648,801
Suppliers		11,401
Accounts payable and accrued expenses		347,190

Disclosure of detailed information about working capital of entity [Text Block]

The following table shows the Company's short term liquidity as of:

	December 31,
	2016		2017
Current assets	Ps	4,233,018	Ps	5,787,862
Current liabilities		593,183		2,408,649
Short term position (liquidity)	Ps	3,639,835	Ps	3,379,213

XML

Authorization of the consolidated financial statements: (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of Consolidated statements of cash flows [Abstract]

Description of detailed information regarding movements in bank loan and long term debt [Text Block]

As of December 31, 2016 and 2017, the analysis of net debt and movements in net debt is presented below:

	Bank				Long-term
	loans				debt
	2016		2017		2017
Accounts payable	Ps		Ps		Ps	340,288
Bank loans (Note 11)		58,336		173,471
Bank loans (Note 11)		4,402,440		10,321,382
Long-term debt (Note 12)						7,149,177
Balances at December 31	Ps	4,460,776	Ps	10,494,853	Ps	7,489,465
Balances at January 1 of net debt	Ps	3,678,128	Ps	4,460,776
Acquisition of Aerostar and Airplan				3,424,897		7,182,963
Interest expense		126,186		322,996		295,834
Proceeds from bank loans				8,000,000
Interest paid		(106,873)		(351,152)		(277,068)
Payment of the long-term debt and bank loan				(5,339,338)		(102,907)
Foreign currency translation				217,385		390,643
Exchange (income) / loss on foreign currency		763,335		(240,711)
Balances at December 31	Ps	4,460,776	Ps	10,494,853	Ps	7,489,465

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Overview: (Details) - MXN ($) $ in Thousands	Dec. 31, 2017	Oct. 19, 2017	Sep. 30, 2017	May 26, 2017
Non-controlling interest at the business combination date		$ 310,827
Total purchase consideration		$ 4,100,624	$ 3,789,797
Aerostar [Member]
Cash paid				$ 726,628
Previous benefit acquired by departure of the previous shareholder				848,923
Consideration on May 26, 2017				1,575,551
Fair value of share capital held in Aerostar prior to the business combination				7,877,756
Non-controlling interest at the business combination date	$ 6,302,205			6,302,205
Total purchase consideration				$ 15,755,512

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Overview: (Details 1) - MXN ($) $ in Thousands	Dec. 31, 2017	Oct. 19, 2017	Sep. 30, 2017	May 26, 2017
NON-CURRENT:
Total purchase consideration		$ 4,100,624	$ 3,789,797
Goodwill at the acquisition date (Note 8.1)	$ 5,606,265
Aerostar [Member]
CURRENT:
Cash and cash equivalents				$ 543,242
Restricted cash	106,350			16,989
Other current assets				142,410
Current assets	790,641			702,641
NON-CURRENT:
Land, furniture and equipment	141,708			135,929
Intangible assets, airport concessions - Net	13,636,227			19,308,402
Total non-current assets				19,444,331
Total assets				20,146,972
CURRENT:
Current liabilities	(633,084)			647,896
NON-CURRENT:
Long-term debt				8,254,620
Deferred income tax				808,894
Other non-current liabilities	$ (247,517)			286,315
Total non-current liabilities				9,349,829
Total liabilities				9,997,725
Net assets acquired under the business combination				10,149,247
Total purchase consideration				15,755,512
Goodwill at the acquisition date (Note 8.1)				$ 5,606,265

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Overview: (Details 2) - MXN ($) $ in Thousands	7 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	May 26, 2017	Dec. 31, 2014
Current assets [abstract]
Cash and cash equivalents	$ 4,677,454	$ 4,677,454	$ 3,497,635	$ 2,084,160		$ 2,855,362
Financial liabilities:
Working capital	3,379,213	3,379,213	3,639,835
Shareholders’ equity	33,688,301	33,688,301	22,753,954	20,408,051		$ 18,751,096
Revenue		12,589,818	9,753,491	8,994,597
Operating cost and expenses		11,112,985	4,820,892	4,921,700
Comprehensive financial cost		618,831	126,186	97,017
Deferred tax expense (income)		(932)	(932)	(5,259)
Net income for the year		(6,750,165)	(3,629,262)	(2,913,735)
Foreign currency translation		315,021
Comprehensive income		6,169,315	$ 4,028,903	$ 3,186,955
Aerostar [Member]
Current assets [abstract]
Cash and cash equivalents	436,774	436,774
Restricted cash	106,350	106,350			$ 16,989
Other current assets	247,517	247,517			(286,315)
Total current assets	790,641	790,641			702,641
Financial liabilities:
Current liabilities	(633,084)	(633,084)			647,896
Working capital	157,557	157,557
Land, furniture and equipment	141,708	141,708			135,929
Intangible assets, airport concessions - Net	13,636,227	13,636,227			$ 19,308,402
Other long term assets	584	584
Long-term Debt	(7,489,465)	(7,489,465)
Accounts payable to the Company	(1,210,088)	(1,210,088)
Deferred income tax - Net	(267,307)	(267,307)
Shareholders’ equity	4,969,216	4,969,216
Revenue	1,497,557
Operating cost and expenses	(1,186,028)
Comprehensive financial cost	(295,803)
Deferred tax expense (income)	(28,679)
Net income for the year	(12,953)
Foreign currency translation	254,110	$ 655,515
Comprehensive income	$ 241,157

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Overview: (Details 3) - MXN ($) $ in Thousands	Oct. 19, 2017	Sep. 30, 2017
Non-controlling interest at the combination date	$ 310,827
Total purchase consideration	$ 4,100,624	$ 3,789,797

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Overview: (Details 4) - MXN ($) $ in Thousands	Dec. 31, 2017	Oct. 19, 2017	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
NON-CURRENT:
Bank loans	$ 173,471			$ 58,336
Deferred income tax	3,033,930			$ 1,456,020	$ 1,523,722
Total consideration		$ 4,100,624	$ 3,789,797
Goodwill at acquisition date and at December 31, 2017 (Note 8.1)	5,606,265
Airplan [Member]
CURRENT:
Cash and cash equivalents		37,716
Other current assets		189,372
Current assets		227,088
NON-CURRENT:
Land, furniture and equipment		3,400
Intangible assets, airport concessions - Net		7,232,588
Total non-current assets		7,235,988
Total assets		7,463,076
CURRENT:
Current liabilities		551,000
NON-CURRENT:
Bank loans		3,424,897
Deferred income tax		861,483
Other non-current liabilities		27
Total non-current liabilities		4,286,407
Total liabilities		4,837,407
Net assets acquired under the business combination		2,625,669
Total consideration		4,100,624
Goodwill at acquisition date and at December 31, 2017 (Note 8.1)	$ 1,474,955	$ 1,474,955

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Overview: (Details Textual) - MXN ($) $ in Thousands		1 Months Ended			5 Months Ended	7 Months Ended	12 Months Ended
		Dec. 31, 2017	May 26, 2017	Apr. 30, 2017	May 26, 2017	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 19, 2017
Other comprehensive income, net of tax, exchange differences on translation							$ 315,021
Copyrights, patents and other industrial property rights, service and operating rights		$ 6,053,820				$ 6,053,820	6,053,820
Deferred income tax resulting from the comparison of the fair values and the book value							605,382
Goodwill expected to be deductible for tax purposes		5,606,265				5,606,265	5,606,265
Amortisation, intangible assets other than goodwill							$ 98,780
Non-controlling interest in acquiree recognised at acquisition date										$ 310,827
Proportion of voting rights held by non-controlling interests							100.00%
Aerostar Airport Holdings, LLC [Member]
Other comprehensive income, net of tax, exchange differences on translation					$ (475,233)			$ 800,692	$ 545,514
Proportion of ownership interest in joint venture			50.00%				60.00%
Aerostar [Member]
Investments in subsidiaries			$ 7,877,756		7,877,756
Carrying value of investments		2,353,040				2,353,040	$ 2,353,040
Gain on fair value adjustments of investments							5,524,716
Other comprehensive income, net of tax, exchange differences on translation						254,110	655,515
Goodwill expected to be deductible for tax purposes			5,606,265		5,606,265
Non-controlling interest in acquiree recognised at acquisition date		6,302,205	6,302,205		6,302,205	6,302,205	6,302,205
Business combination pro forma revenue							1,549,099
Cash transferred			726,628		726,628
Other tangible or intangible assets transferred			$ 848,923		$ 848,923
Business combination pro forma net income							127,042
Airplan [Member]
Goodwill expected to be deductible for tax purposes		$ 1,474,955				$ 1,474,955	1,474,955			$ 1,474,955
Business combination pro forma revenue							2,640,493
Percentage of voting equity interests acquired										92.42%
Business combination pro forma net income							$ 231,130
Investing Public [member]
Percentage of Outstanding Capital Stock							67.46%	67.46%	67.46%
Inversiones y Tecnicas Aeroportuarias [member]
Percentage of Outstanding Capital Stock							7.65%	7.65%	7.65%
Servicios Estrategia Patrimonial [member]
Percentage of Outstanding Capital Stock							7.12%	7.12%	7.12%
Agrupacion Aeroportuaria Internacional III [member]
Percentage of Outstanding Capital Stock							5.46%	5.46%	5.46%
Remer Soluciones a la Inversion [member]
Percentage of Outstanding Capital Stock							12.31%	12.31%	12.31%
Caribbean Logistic, S. A. de C. V., [member]
Proportion of ownership interest in subsidiary							95.00%	95.00%
Cargo RF, S. A. de C. V [member]
Proportion of ownership interest in subsidiary							95.00%	95.00%
Cancun Airport Services, S. A. de C. V. [member]
Proportion of ownership interest in subsidiary							95.00%	95.00%
Aeropuerto de Cancún, S. A. de C. V. [Member]
Proportion of ownership interest in subsidiary	[1],[2]						100.00%	100.00%
Proportion of ownership interest in joint venture				50.00%			60.00%
Aeropuerto de Cancún, S. A. de C. V. [Member] | Aerostar Airport Holdings, LLC [Member]
Percentage of voting equity interests acquired		60.00%		50.00%		60.00%	60.00%
Proportion of ownership interest in joint venture		60.00%		50.00%

[1] Aeropuerto de Cancún, S. A. de C. V. acquired on October 19, 2017 a 92.42% equity interest in Sociedad Operadora de Aeropuertos Centro Norte, S. A. (Airplan), Company that holds the concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the Enrique Olaya Herrera in Medellín, José María Córdoba in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports, and from that date Airplan’s results have been incorporated line-by-line in the Company’s and Cancún Aiport’s financial statements.

[2] Cancún held a 50% stake in Aerostar until May 26, 2017, which was accounted as a joint venture. See Note 9. As of May 26, 2017, the Cancún Airport acquired an additional 10% equity interest in Aerostar. As a result of this acquisition, the Company has a 60% shareholding and now controls Aerostar, therefore Aerostar is consolidated in the Company’s financial statements.

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Segment Information: (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Aeronautical revenue		$ 259,612	$ 230,344	$ 193,789
Operating profit		1,476,833	4,932,599	4,072,897
Total assets		56,614,103	29,216,091
Total liabilities		22,925,802	6,462,137
Exchange rate translation		315,021
Commercial right´s		6,053,820
Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue		6,484,219	4,532,194	3,921,949
Non-aeronautical revenue		4,261,383	3,104,343	2,491,941
Revenue from construction services		1,844,216	2,116,954	2,580,707
Other revenue
Operating profit		1,476,833	4,932,599	4,072,897
Non-current assets		50,826,241	24,983,073	23,140,355
Total assets		56,614,103	29,216,091	26,125,884
Total liabilities		22,925,802	6,462,137	5,717,833
Improvements to assets under concession and acquisition of furniture and equipment in the period		1,495,212	1,814,482	2,906,567
Amortization and depreciation		(1,166,114)	(529,660)	(468,995)
Fixed assets and intangible assets		20,626,499
Exchange rate translation		847,475
Commercial right´s		6,053,820
Cancun [member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue		3,963,324	3,341,882	2,877,885
Non-aeronautical revenue		3,401,235	2,823,209	2,250,665
Revenue from construction services		1,421,942	1,896,338	1,846,138
Other revenue
Operating profit		4,623,499	3,782,382	3,091,271
Non-current assets		17,539,396	18,586,197	16,758,522
Total assets		20,486,290	20,972,688	18,465,295
Total liabilities		7,932,392	6,179,313	5,455,499
Improvements to assets under concession and acquisition of furniture and equipment in the period		1,009,625	1,513,550	2,286,134
Amortization and depreciation		(457,447)	(328,819)	(286,660)
Fixed assets and intangible assets
Exchange rate translation
Commercial right´s
Villahermosa [member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue		195,554	181,123	174,103
Non-aeronautical revenue		61,909	62,356	58,278
Revenue from construction services		6,336	44,875	61,650
Other revenue				66
Operating profit		119,772	109,398	104,466
Non-current assets		935,624	956,551	927,019
Total assets		1,227,172	1,308,469	1,226,203
Total liabilities		82,802	101,197	113,681
Improvements to assets under concession and acquisition of furniture and equipment in the period		8,965	61,651	51,754
Amortization and depreciation		(29,892)	(28,349)	(26,098)
Fixed assets and intangible assets
Exchange rate translation
Commercial right´s
Merida [member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue		394,531	334,163	272,065
Non-aeronautical revenue		97,656	85,203	71,872
Revenue from construction services		46,146	98,668	204,450
Other revenue				27
Operating profit		264,098	158,770	139,649
Non-current assets		1,497,095	1,493,544	1,431,440
Total assets		1,769,962	1,650,201	1,616,518
Total liabilities		(180)	8,056	41,073
Improvements to assets under concession and acquisition of furniture and equipment in the period		50,021	127,787	168,817
Amortization and depreciation		(46,470)	(39,524)	(36,287)
Fixed assets and intangible assets
Exchange rate translation
Commercial right´s
Holding & service companies [member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue
Non-aeronautical revenue
Revenue from construction services
Other revenue		1,492,287	1,455,486	1,291,669
Operating profit		501,617	569,516	380,856
Non-current assets		25,176,942	22,257,137	20,091,300
Total assets		25,693,958	23,058,995	20,627,797
Total liabilities		131,983	190,378	138,598
Improvements to assets under concession and acquisition of furniture and equipment in the period		813	200	34
Amortization and depreciation		(700)	(2,111)	(2,248)
Fixed assets and intangible assets
Exchange rate translation
Commercial right´s
Other operating segments [member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue		766,075	675,026	597,896
Non-aeronautical revenue		149,240	133,830	151,539
Revenue from construction services		106,573	77,073	468,469
Other revenue				103,380
Operating profit		374,634	320,762	356,655
Non-current assets		4,430,766	4,430,600	4,463,032
Total assets		5,193,436	5,109,194	4,864,156
Total liabilities		85,894	132,130	118,547
Improvements to assets under concession and acquisition of furniture and equipment in the period		97,174	111,294	399,828
Amortization and depreciation		(138,755)	(130,857)	(117,702)
Fixed assets and intangible assets
Exchange rate translation
Commercial right´s
Consolidation adjustments [member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue
Non-aeronautical revenue		(318)	(255)	(40,413)
Revenue from construction services
Other revenue		(1,429,287)	(1,455,486)	(1,395,142)
Operating profit		(4,719,098)
Non-current assets		(25,693,269)	(22,740,956)	(20,530,958)
Total assets		(25,693,269)	(22,883,456)	(20,674,085)
Total liabilities			(148,937)	(149,565)
Improvements to assets under concession and acquisition of furniture and equipment in the period
Amortization and depreciation
Fixed assets and intangible assets
Exchange rate translation
Commercial right´s
Aerostar [Member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue	[1]	939,042
Non-aeronautical revenue	[1]	482,590
Revenue from construction services	[1]	75,925
Other revenue	[1]
Operating profit	[1]	311,529
Non-current assets	[1]	19,831,755
Total assets	[1]	20,609,156
Total liabilities	[1]	9,599,943
Improvements to assets under concession and acquisition of furniture and equipment in the period	[1]	139,078
Amortization and depreciation	[1]	(437,852)
Fixed assets and intangible assets	[1]	13,390,511
Exchange rate translation	[1]	686,198
Commercial right´s	[1]	6,053,820
Airplan [Member] | Operating segments [member]
Disclosure of operating segments [line items]
Aeronautical revenue	[2]	225,693
Non-aeronautical revenue	[2]	69,071
Revenue from construction services	[2]	187,294
Other revenue	[2]
Operating profit	[2]	782
Non-current assets	[2]	7,107,932
Total assets	[2]	7,327,398
Total liabilities	[2]	5,092,968
Improvements to assets under concession and acquisition of furniture and equipment in the period	[2]	189,536
Amortization and depreciation	[2]	(54,998)
Fixed assets and intangible assets	[2]	7,235,988
Exchange rate translation	[2]	161,277
Commercial right´s	[2]

[1] Subsidiary located in Puerto Rico

[2] Subsidiary located in Colombia

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Segment information: (Details Textual)	Dec. 31, 2017	Oct. 19, 2017	Apr. 30, 2017
Aerostar Airport Holdings, LLC [Member] | Aeropuerto de Cancún, S. A. de C. V. [Member]
Percentage of voting equity interests acquired	60.00%		50.00%
Airplan [Member]
Percentage of voting equity interests acquired		92.42%

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Revenues: (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Airport services		$ 259,612	$ 230,344	$ 193,789
Total revenue		12,589,818	9,753,491	8,994,597
Regulated Services [Member]
Airport services	[1]	6,743,831	4,762,538	4,115,738
Non-Regulated Services [Member]
Access fees on non-permanent ground transportation		47,756	42,917	38,476
Car parking and related access fees		183,977	83,493	75,846
Other access fees		11,130	8,634	4,879
Commercial services	[2]	3,645,797	2,646,134	2,096,226
Other services		113,111	92,821	82,725
Total non-regulated services	[3]	4,001,771	2,873,999	2,298,152
Construction Services [Member]
Construction services		$ 1,844,216	$ 2,116,954	$ 2,580,707

[1] (*) In 2017, this line in the statement of income includes regulated services from Aerostar of Ps.939,042 and from Airplan of Ps.225,693, once they were incorporated into the Company's financial statements as of June 1, 2017 and October 19, 2017, respectively.

[2] (**) Commercial revenues do not include access fees and car parking.

[3] (***) This line, in the statement of income, includes the items of complementary and airport services that amount to a total of Ps.193,789, Ps.230,344 and Ps.259,612 in 2015, 2016 and 2017, respectively.

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Revenues: (Details 1) - Airplan [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2017 MXN ($)
Income associated with intangible compulsory works	$ 35,154
Income associated with intangible complementary works	152,140
Revenue from construction contracts	$ 187,294

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Revenues: (Details 2) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commercial revenues	[1]	$ 3,877,530	$ 2,772,544	$ 2,210,548
Retail stores [Member]
Commercial revenues		1,194,772	904,465	712,647
Duty free shops [Member]
Commercial revenues		881,705	640,793	531,311
Food and beverage [Member]
Commercial revenues		609,304	439,101	334,685
Advertising revenues [Member]
Commercial revenues		139,545	122,941	121,860
Car rental companies [Member]
Commercial revenues		379,162	221,100	161,937
Banking and currency exchange services [Member]
Commercial revenues		97,311	86,780	69,036
Teleservices [Member]
Commercial revenues		12,973	10,869	8,242
Ground transportations [Member]
Commercial revenues		5,729	2,562	2,522
Other services [Member]
Commercial revenues		325,296	217,523	153,986
Access fees on non permanent ground transportation [Member]
Commercial revenues		47,756	42,917	38,476
Car parking and related access fees [Member]
Commercial revenues		$ 183,977	$ 83,493	$ 75,846

[1] (*) This line includes the concepts of access fees and car parking.

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Revenues: (Details 3) $ in Thousands	Dec. 31, 2017 MXN ($)
Minimum lease payments receivable under non-cancellable operating lease	$ 22,085,023
2018
Minimum lease payments receivable under non-cancellable operating lease	3,986,487
2019
Minimum lease payments receivable under non-cancellable operating lease	2,584,950
2020
Minimum lease payments receivable under non-cancellable operating lease	2,358,698
2021
Minimum lease payments receivable under non-cancellable operating lease	2,054,600
2022 to 2027
Minimum lease payments receivable under non-cancellable operating lease	$ 11,100,288

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Revenues: (Details Textual) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue from rendering of transport services	$ 259,612	$ 230,344	$ 193,789
Income relating to variable lease payments for operating leases that do not depend on index or rate	2,466,980	2,069,696	1,596,099
Revenues Collected by Passenger Installation Charges	191,356
Airplan [Member]
Revenue from rendering of transport services	225,693
Revenue from construction contracts	187,294
Aerostar [Member]
Revenue from rendering of transport services	939,042
Revenue from construction contracts	75,925
Fixed lease income [Member]
Operating lease income	$ 166,747	$ 105,203	$ 104,128

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Costs and expenses by nature: (Details) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Expenses by nature [abstract]
Termination benefits (Note 18.17)		$ 1,984	$ 1,237	$ 1,133
Short term benefits		772,129	531,246	499,035
Employees' statutory profit sharing		6,359	6,126	5,085
Electric power		234,879	108,910	92,737
Maintenance and conservation		401,479	229,904	214,439
Professional fees		217,930	103,918	70,064
Insurance and bonds		86,838	30,157	31,919
Surveillance services		207,303	144,462	125,176
Cleaning services		142,531	90,285	77,274
Technical assistance (Note 15.4)		346,487	288,111	239,175
Right of use of assets under concession (DUAC)	[1]	468,695	344,939	291,505
Amortization and depreciation of intangible asset, furniture and equipment		1,166,114	529,660	468,996
Goodwill impairment (Note 8.1)		4,719,096
Consumption of commercial items		252,602	180,636	139,603
Construction services (Note 3.1.3)		1,898,550	2,116,954	2,580,707
Financial assets impairment		45,687
Other		144,322	114,347	84,852
Total aeronautical and non-aeronautical services costs, costs of construction services and administrative expenses		$ 11,112,985	$ 4,820,892	$ 4,921,700

[1] (1) As of December 31, 2017, DUAC by Ps.406,733 correspond to the consideration for the concessions in Mexico, which is equivalent to 5% of the gross revenues of each of the concessions, Ps.56,005 correspond to the consideration for the Airplan concession at 19% of gross revenues for the period from October 19 to December 31, 2017 and Ps.5,957 to the consideration for the Aerostar concession at 5% of the airport's gross receipts for the period from June 1, to December 31, 2017.

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Cash and cash equivalents: (Details) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Cash and cash held at banks	$ 4,417,791	$ 3,142,810
Short term investments	240,701	354,825
Fiduciary rights	18,962
Cash and cash equivalents	$ 4,677,454	$ 3,497,635	$ 2,084,160	$ 2,855,362

XML

Cash and cash equivalents: (Details Textual) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
Restricted Cash and Cash Equivalents	$ 106,350

XML

Accounts receivable - Net: (Details) - MXN ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Clients		$ 858,900	$ 592,583
Less: impairment provision		(173,398)	(127,711)
Current portion of accounts receivable		685,502	464,872
Long term accounts receivable from joint ventures (Notes 9 and 15.1)	[1]		1,886,546
Total accounts receivable		$ 685,502	$ 2,351,418

[1] (*) In 2013, the Company granted a loan to Aerostar of Ps.1,254,800 (USD100,000) at an annual interest rate of LIBOR plus 2.10% valid for the long term. As of June 1, 2017, derived from the incorporation of Aerostar in the consolidation of the Company, this loan forms part of the elimination entries.

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Accounts receivable - Net: (Details 1) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current trade receivables	$ 685,502	$ 464,872
Allowance account for credit losses of financial assets	(127,711)
Allowance account for credit losses of financial assets	(173,398)	(127,711)
Trade receivables [member]
Current trade receivables	173,398	127,711
Allowance account for credit losses of financial assets	127,711	128,221	$ 130,185
Allowance account for credit losses of financial assets	173,398	127,711	128,221
Utilisation, allowance account for credit losses of financial assets	36,621	(510)	$ (1,964)
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets	6,690
Trade receivables [member] | Airplan [Member]
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets	2,376
Trade receivables [member] | Financial assets past due but not impaired [member]
Current trade receivables	192,805	71,317
Trade receivables [member] | Not later than one month [member]
Current trade receivables	137,155	51,820
Trade receivables [member] | Later than three months and not later than six months [member]
Current trade receivables	71,049	592
Trade receivables [member] | Later than six months and not later than one year [member]
Current trade receivables	157,999	146,616
Trade receivables [member] | Current [member]
Current trade receivables	$ 366,203	$ 199,028

XML

Accounts receivable - Net: (Details Textual) $ in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 22, 2013 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Feb. 22, 2013 USD ($)
Borrowings, interest rate basis		London Inter Bank Offered Rate (LIBOR) plus 1.85%
Current trade receivables related to airport use fees		$ 525,379	$ 487,043
Current trade receivables		685,502	464,872
Trade receivables [member]
Current trade receivables		173,398	127,711
Trade receivables [member] | Financial assets past due but not impaired [member]
Current trade receivables		$ 192,805	71,317
Aerostar [Member]
Loans and receivables	$ 1,254,800			$ 100,000
Borrowings, interest rate basis	LIBOR plus 2.10%
Aerostar [Member] | Loans Receivable Related parties [member]
Financial assets, at fair value			$ 2,133,932

XML

Land, furniture and equipment - Net: (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, plant and equipment	$ 473,238	$ 323,099	$ 321,913
Additions other than through business combinations, property, plant and equipment	3,665	1,186
Acquisitions through business combinations, property, plant and equipment	139,329
Increase (decrease) through net exchange differences, property, plant and equipment	7,145
Land [member]
Property, plant and equipment	302,347	302,050	302,050
Additions other than through business combinations, property, plant and equipment
Disposals, property, plant and equipment
Acquisitions through business combinations, property, plant and equipment	290
Increase (decrease) through net exchange differences, property, plant and equipment	7
Fixtures and fittings [member]
Property, plant and equipment	72,708	60,001	55,480
Additions other than through business combinations, property, plant and equipment	5,852	5,008
Disposals, property, plant and equipment	(2,326)	(487)
Acquisitions through business combinations, property, plant and equipment	8,801
Increase (decrease) through net exchange differences, property, plant and equipment	380
Machinery [member]
Property, plant and equipment	65,383
Additions other than through business combinations, property, plant and equipment	7,817
Acquisitions through business combinations, property, plant and equipment	54,723
Increase (decrease) through net exchange differences, property, plant and equipment	2,843
Computer Equipment [Member]
Property, plant and equipment	15,567
Additions other than through business combinations, property, plant and equipment	2,872
Acquisitions through business combinations, property, plant and equipment	12,231
Increase (decrease) through net exchange differences, property, plant and equipment	464
Vehicles [Member]
Property, plant and equipment	20,913
Additions other than through business combinations, property, plant and equipment	958
Acquisitions through business combinations, property, plant and equipment	18,980
Increase (decrease) through net exchange differences, property, plant and equipment	975
Leasehold Improvements [Member]
Property, plant and equipment	44,916
Acquisitions through business combinations, property, plant and equipment	42,532
Increase (decrease) through net exchange differences, property, plant and equipment	2,384
Equipment in transit [Member]
Property, plant and equipment	10,933
Additions other than through business combinations, property, plant and equipment	9,069
Acquisitions through business combinations, property, plant and equipment	1,772
Increase (decrease) through net exchange differences, property, plant and equipment	92
Gross carrying amount [member]
Property, plant and equipment	462,305	323,099	321,913
Additions other than through business combinations, property, plant and equipment	(5,404)	1,186
Acquisitions through business combinations, property, plant and equipment	137,557
Increase (decrease) through net exchange differences, property, plant and equipment	7,053
Accumulated depreciation and amortisation [member]
Property, plant and equipment	(59,529)	(38,952)	$ (35,617)
Additions other than through business combinations, property, plant and equipment	(22,903)	(3,822)
Disposals, property, plant and equipment	$ 2,326	$ 487

XML

Land, furniture and equipment - Net: (Details Textual) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Depreciation expense	$ 1,166,114		$ 529,660	$ 468,996
Aerostar [Member]
Depreciation expense	20,697
Airplan [Member]
Depreciation expense	$ 175
Land, furniture and equipment
Depreciation expense		$ 22,903	$ 3,822	$ 4,006

XML

Intangible assets, airport concessions - Net: (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Intangible assets and goodwill	$ 20,284,126	$ 19,022,311
Additions other than through business combinations, intangible assets other than goodwill		1,261,815
Acquisitions through business combinations, intangible assets and goodwill
Increase (decrease) through net exchange differences, intangible assets and goodwill	840,330
Impairment loss recognised in profit or loss, intangible assets and goodwill	(4,393,663)
Intangible assets and goodwill	50,353,003	20,284,126
Accumulated impairment [member]
Intangible assets and goodwill	(7,560,520)	(7,023,669)
Additions other than through business combinations, intangible assets other than goodwill		(536,851)
Impairment loss recognised in profit or loss, intangible assets and goodwill	(1,143,211)
Intangible assets and goodwill	(8,703,731)	(7,560,520)
Concessions [member] | Gross carrying amount [member]
Intangible assets and goodwill	27,639,119	25,854,357
Additions other than through business combinations, intangible assets other than goodwill		1,784,762
Acquisitions through business combinations, intangible assets and goodwill	20,487,170
Increase (decrease) through net exchange differences, intangible assets and goodwill	484,045
Impairment loss recognised in profit or loss, intangible assets and goodwill	1,449,729
Intangible assets and goodwill	50,060,063	27,639,119
Licences and franchises [member]
Impairment loss recognised in profit or loss, intangible assets and goodwill	18,915
Licences and franchises [member] | Gross carrying amount [member]
Intangible assets and goodwill	205,527	191,623
Additions other than through business combinations, intangible assets other than goodwill		13,904
Intangible assets and goodwill	224,442	$ 205,527
Goodwill [Member]
Impairment loss recognised in profit or loss, intangible assets and goodwill	(4,719,096)
Goodwill [Member] | Gross carrying amount [member]
Acquisitions through business combinations, intangible assets and goodwill	7,081,220
Increase (decrease) through net exchange differences, intangible assets and goodwill	215,334
Intangible assets and goodwill	$ 7,296,554

XML

Intangible assets, airport concessions - Net: (Details 1) $ in Thousands	Dec. 31, 2017 MXN ($)
Goodwill	$ 2,362,124
Airplan Goodwill (Note 1)	5,606,265
Aerostar segment [Member]
Goodwill	887,169
Airplan segment [Member]
Airplan Goodwill (Note 1)	$ 1,474,955

XML

Intangible assets, airport concessions - Net: (Details 2) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill	$ 2,362,124
Goodwill impairment (Note 8.1)	4,719,096
Aerostar segment [Member]
Goodwill	887,169
Gross carrying amount [member] | Aerostar segment [Member]
Goodwill	$ 5,606,265

XML

Intangible assets, airport concessions - Net: (Details 3)	12 Months Ended
	Dec. 31, 2017
Aerostar segment [Member]
Discount rate	10.00%
Discount rate for the value in use method	11.75%
Annual average of revenue growth	3.47%
Level of the fair value hierarchy of value recoverable from the CGU	3
Airplan segment [Member]
Discount rate	10.07%
Discount rate for the value in use method	15.12%
Annual average of revenue growth	2.00%
Level of the fair value hierarchy of value recoverable from the CGU	3

XML

Intangible assets, airport concessions - Net: (Details Textual) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)	Apr. 25, 2018	Dec. 31, 2017 USD ($)	Sep. 20, 2017
Acquisitions through business combinations, intangible assets and goodwill
Closing foreign exchange rate				18.28		19.66
Impairment loss recognised in profit or loss, goodwill	4,719,096
Aerostar segment [Member]
Amortisation expense	$ 422,305
Explanation of value assigned to key assumption	If the discount rate applied to the cash flow projections of this CGU would have been + 1% or -1%, Management's estimate would have to recognize the following additional effects of Ps.1,525,824 (11.93% instead of 10.93%), and in the case of the decrease in the rate (Ps.1,827,599) lower than the amount recognized as impairment (9.93% instead of 10.93%), in the latter case the Company would not have to recognize any impairment..
Percentage of rental expense on gross income	5.00%
Concession period for operating rights	40 years
Description of concession agreement	The Agreement requires Aerostar to make a cash payment of USD2.5 million (Ps.49.15  million at an exchange rate of Ps.19.66) per year for the first five years after the first five years, the authority establishes a payment of "Annual Authority Income Share", consisting of 5 % of the gross revenues of the airport obtained by Aerostar from the sixth year to the thirtieth year. From year 31 to 40, this amount will increase to 10% of the airport's gross revenues.
Annual contributions to be collected	$ 49,150				$ 2.5
Closing foreign exchange rate	19.66				19.66
Explanation of period over which management has projected cash flows	36
Airplan segment [Member]
Amortisation expense	$ 54,823
Explanation of value assigned to key assumption	If the discount rate applied to the cash flow projections of this CGU would have been + 1% or -1%, the Administration's estimate would have the following effects (11.07% instead of 10.07%), and in this case the excess of the fair value in relation to its book value would be shortened by Ps.394, and in the case of a decrease in the rate the excess would be increased by Ps.430 (9.07% instead of 10.07%), in none of the cases would there be any effects for deterioration.
Explanation of period over which management has projected cash flows	15
Aeroplan segment [Member]
Period elapsed from date of execution of certificate of commencement of execution	15 years
Period elapsed from date of execution start certificate inspite regulated revenue not matched with value of expected regulated revenue	25 years
Expected regulated income adjusted for complementary works	$ 14,294,642
Percent of obligation to pay consideration on gross income	19.00%
Concessions [member]
Amortisation expense	$ 1,130,481	463,464	524,297
Licences and franchises [member]
Amortisation expense	$ 12,730	$ 10,581	$ 12,554

XML

Investment in joint ventures accounted for under the equity method: (Details 1) - MXN ($) $ in Thousands	Dec. 31, 2017	May 26, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash and cash equivalents	$ 4,677,454		$ 3,497,635	$ 2,084,160	$ 2,855,362
Restricted cash and cash equivalents	106,350
Other current assets	185,426		134,381
Current assets	5,787,862		4,233,018
Financial liabilities	(173,471)		(58,336)
Current liabilities	(2,408,649)		(593,183)
Land, furniture and equipment	473,238		323,099	321,913
Long term debt	(7,149,177)
Loan payable to the Company (Note 13.1)	(87,951)		(71,725)
Other non-current liabilities	(10,321,382)		(4,402,440)
Deferred taxes - Net	3,033,930		1,608,805
Stockholders' equity	$ 33,688,301		22,753,954	$ 20,408,051	$ 18,751,096
Aerostar Airport Holdings, LLC [member]
Cash and cash equivalents		$ 543,242	719,254
Restricted cash and cash equivalents		16,989	21,044
Other current assets		142,410	201,992
Current assets		702,641	942,290
Financial liabilities			(92,367)
Other current liabilities		(647,896)	(615,709)
Current liabilities		(647,896)	(708,076)
Working capital		547,452	234,214
Land, furniture and equipment		135,373	152,758
Intangible assets, airport concessions - Net		13,254,582	14,661,436
Other non-current assets		556	571
Non-current assets		13,390,511	14,814,765
Long term debt		(6,824,310)	(7,693,682)
Loan payable to the Company (Note 13.1)		(1,430,310)	(1,886,546)
Other non-current liabilities		(286,325)	(265,040)
Deferred taxes - Net		(203,502)	(225,107)
Non-current liabilities		(8,744,447)	(10,070,375)
Stockholders' equity		$ 4,700,809	$ 4,978,604

XML

Investment in joint ventures accounted for under the equity method: (Details 2) - MXN ($) $ in Thousands	5 Months Ended	12 Months Ended
	May 26, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Total revenue		$ 12,589,818	$ 9,753,491	$ 8,994,597
Operating costs and expenses		231,834	45,469	109,963
Comprehensive financing loss - Net		618,831	126,186	97,017
Deferred income taxes		(932)	(932)	(5,259)
Net income for the period		6,750,165	3,629,262	2,913,735
Effect for foreign currency conversion		315,021
Comprehensive income		$ 6,169,315	4,028,903	3,186,955
Aerostar Airport Holdings, LLC [member]
Total revenue	$ 1,170,888		2,526,371	2,049,611
Operating costs and expenses	(694,435)		(1,650,890)	(1,456,915)
Comprehensive financing loss - Net	(229,789)		(535,053)	(444,726)
Deferred income taxes	(21,974)		(51,931)	(46,124)
Net income for the period	224,690		288,497	101,846
Effect for foreign currency conversion	(475,233)		800,692	545,514
Comprehensive income	$ (250,543)		$ 1,089,189	$ 647,360

XML

Investment in joint ventures accounted for under the equity method: (Details 3) - MXN ($) $ in Thousands	5 Months Ended	12 Months Ended
	May 26, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated deficit		$ (9,949,654)	$ (8,155,159)
Other comprehensive income accumulated		195,511	893,132
Other comprehensive income		$ (2,739)	(705)	$ 463
Aerostar Airport Holdings, LLC [member]
Initial capital contribution to Aerostar	$ 3,016,003		3,016,003
Accumulated deficit	176,335		(112,162)
Net income for the period	224,690		288,497
Other comprehensive income accumulated	1,786,266		985,574
Other comprehensive income	(502,485)		800,692
Net assets at period closing	$ 4,700,809		$ 4,978,604
Equity percentage in joint business	50.00%		50.00%
Carrying value at December 31	$ 2,340,405		$ 2,489,302

XML

Investment in joint ventures accounted for under the equity method: (Details 4) - MXN ($) $ in Thousands	5 Months Ended	12 Months Ended
	May 26, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income		$ 6,750,165	$ 3,629,262	$ 2,913,735
Aerostar Airport Holdings, LLC [member]
Net income	$ 224,690		$ 288,497	$ 101,846
Equity percentage in joint venture	50.00%		50.00%
Equity method earnings	$ 112,345		$ 144,248

XML

Investment in joint ventures accounted for under the equity method: (Details Textual) $ in Thousands, $ in Millions	1 Months Ended	12 Months Ended
	May 26, 2017	Dec. 31, 2017 MXN ($)	Dec. 31, 2013 MXN ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2013 USD ($)
Revenues Collected by Passenger Installation Charges		$ 191,356
LMM Airport [member] | Aeropuerto de Cancun, S. A. de C. V. [member]
Other cash payments to acquire interests in joint ventures, classified as investing activities			$ 7,846,000	$ 615
Bonds [member] | Aeropuerto de Cancun, S. A. de C. V. [member]
Notional amount			$ 4,471,000		$ 350
Aerostar Airport Holdings, LLC [member]
Proportion of ownership interest in joint venture	50.00%	60.00%
Aerostar Airport Holdings, LLC [member] | Aeropuerto de Cancun, S. A. de C. V. [member]
Proportion of ownership interest in joint venture	50.00%	60.00%
Aerostar Airport Holdings, LLC [member] | Highstar Capital IV, L.P. [member]
Proportion of ownership interest in joint venture	50.00%
Aerostar Airport Holdings, LLC [member] | Public Sector Pension Investment Board [member]
Proportion of ownership interest in joint venture		40.00%

XML

Accounts payable and accrued expenses: (Details) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Suppliers	$ 428,881	$ 11,401
Taxes payable	157,387	116,643
Use rights of assets under concession	127,076	109,437
Accounts payable to related parties (Note 15.1)	87,951	71,725
Salaries payable	111,984	71,022
Sundry creditors for services provided	583,059	94,349
Interest payable of the Bank Loans (Note 12)	340,288
Accounts payable to contractors	265,236	657
Total	$ 2,101,862	$ 475,234

XML

Bank loans: (Details) $ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 COP ($)	Dec. 31, 2016 USD ($)
Credit line used	$ 14,493,049	$ 4,433,170			$ 215,000
Principle amortization	4,000,000
Commissions and interest - Net	1,804	27,606
Short Term	173,471	58,336
Long Term	7,149,177
Fair value	10,791,338	4,765,630
Airplan [Member]
Credit line used	3,641,929			$ 440,000,000
Commissions and interest - Net	(8,925)
Short Term	144,289
Long Term	3,488,715
Fair value	3,534,614
BBVA Bancomer, S. A. [member]
Credit line used		2,216,585			107,500
Principle amortization
Commissions and interest - Net		13,803
Short Term		29,168
Long Term		2,201,220
Fair value		2,387,179
Bank of America Merrill Lynch [member]
Credit line used	1,425,560	2,216,585	$ 72,500		$ 107,500
Principle amortization
Commissions and interest - Net	3,215	13,803
Short Term	5,675	29,168
Long Term	1,423,100	2,201,220
Fair value	1,535,374	$ 2,378,451
Loan one from BBVA Bancomer [Member]
Credit line used	2,000,000
Commissions and interest - Net	14,875
Short Term	14,875
Long Term	2,000,000
Fair value	2,089,786
Loan two from BBVA Bancomer [Member]
Credit line used	4,000,000
Principle amortization	4,000,000
Santander [Member]
Credit line used	2,000,000
Commissions and interest - Net	(10,576)
Short Term	2,957
Long Term	1,986,467
Fair value	2,091,065
Loan three from BBVA Bancomer [Member]
Credit line used	1,425,560		$ 72,500
Commissions and interest - Net	3,215
Short Term	5,675
Long Term	1,423,100
Fair value	1,540,499
Bancolombia [Member]
Credit line used	1,295,381			150,000,000
Commissions and interest - Net	(2,595)
Short Term	103,100
Long Term	1,189,686
Fair value	1,204,983
CorpBanca [Member]
Credit line used	718,021			102,000,000
Commissions and interest - Net	(633)
Short Term	2,840
Long Term	810,284
Fair value	819,389
Banco Davivienda [Member]
Credit line used	328,112			90,000,000
Commissions and interest - Net	(1,159)
Short Term	2,488
Long Term	292,905
Fair value	722,990
Banco de Occidente [Member]
Credit line used	295,186			37,000,000
Commissions and interest - Net	(1,258)
Short Term	1,031
Long Term	292,898
Fair value	297,229
Banco Popular [Member]
Credit line used	63,824			8,000,000
Commissions and interest - Net	(941)
Short Term	369
Long Term	62,514
Fair value	64,266
Banco AV Villas [Member]
Credit line used	63,824			8,000,000
Commissions and interest - Net	(49)
Short Term	223
Long Term	63,552
Fair value	64,266
Serfinansa [Member]
Credit line used	63,824			8,000,000
Commissions and interest - Net	(1,243)
Short Term	79
Long Term	62,502
Fair value	64,266
Loan from Banco Bogota [Member] | Airplan [Member]
Credit line used	813,757			$ 37,000,000
Commissions and interest - Net	(1,047)
Short Term	34,159
Long Term	714,374
Fair value	$ 297,229

XML

Bank loans: (Details Textual) $ in Thousands, $ in Millions		1 Months Ended						12 Months Ended
	Jun. 02, 2015 MXN ($)	Nov. 16, 2017 MXN ($)	Nov. 16, 2017 USD ($)	Oct. 31, 2017 MXN ($)	Oct. 19, 2017 MXN ($)	Jul. 31, 2017 USD ($)	Jul. 17, 2015 MXN ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)	Apr. 25, 2018	Nov. 16, 2017 USD ($)	Oct. 31, 2017 USD ($)	Sep. 20, 2017	Jul. 17, 2015 USD ($)
Borrowings, interest rate basis								London Inter Bank Offered Rate (LIBOR) plus 1.85%
Closing foreign exchange rate											18.28			19.66
Repayments of borrowings, classified as financing activities								$ 5,339,338
Proceeds from borrowings, classified as financing activities								$ 8,000,000
BBVA Bancomer [Member]
Notional amount				$ 2,000,000		$ 4,000.0							$ 2,000.0
Borrowings, interest rate basis				28-day TIIE plus 1.25 points		The loan was denominated in pesos and subject to the monthly rate TIIE plus 0.60% for the period of July 31 to October 31, 2017, TIIE plus 0.85% from October 31, 2017, to January 31, 2018, TIIE plus 1.10% from January 31 to April 30, 2018, and TIIE plus 1.60% from April 30 to July 31, 2018.
Borrowings,payment term				The new loan is payable in seven years and will be paid in nine semiannual payments from October 2020 to October 2024 at the rate of 28-day TIIE plus 1.25 points.
Repayments of borrowings, classified as financing activities				$ 4,000,000
Borrowings,Maturity date				Oct. 27, 2022
Minimum leverage ratio to be maintained								3.5x
Minimum interest coverage ratio								3.0x
Banco Santander [Member]
Minimum leverage ratio to be maintained								3.5x
Minimum interest coverage ratio								3.0x
Subsidiaries in Mexico [Member]
Notional amount		$ 72,500					$ 3,397,000					$ 1,425.3			$ 215.0
Borrowings, interest rate basis							LIBOR plus 1.85%
Closing foreign exchange rate		19.66					15.80					19.66			15.80
Borrowings,payment term							July 2018 to July 2022
Repayments of borrowings, classified as financing activities		$ 1,376,200	$ 70.0
Borrowings,Maturity date		Nov. 16, 2022	Nov. 16, 2022
Subsidiaries in Mexico [Member] | BBVA Bancomer [Member]
Borrowings, interest rate basis		LIBOR plus a spread of 1.525%	LIBOR plus a spread of 1.525%
Subsidiaries in Mexico [Member] | BankofAmericaMerrill Lynch [Member]
Borrowings, interest rate basis		LIBOR plus a spread of 1.45%	LIBOR plus a spread of 1.45%
Airplan [Member]
Minimum equity debt ratio to be maintained								equal to or higher than 16%
Debt coverage ratio								2: 1.2
Syndicated Loan [Member]
Increase (decrease) in fair value measurement, liabilities					$ 605,382
Long-term syndicated loan [Member]
Proceeds from borrowings, classified as financing activities	$ 440,000,000

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Long term debt: (Details) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2017 USD ($)	Jun. 24, 2015 USD ($)	Mar. 22, 2013 MXN ($)	Mar. 22, 2013 USD ($)
Intererst	$ 1,804		$ 27,606
Long	7,149,177
Fair value	10,791,338		$ 4,765,630
Senior secured notes due on March 22, 2035 [Member]
Credit line	7,489,465			$ 400,000	$ 50,000	$ 4,471,000	$ 350,000
Intererst	126,712	$ 6,444
Short	340,288
Long	7,149,177
Fair value	$ 6,766,798

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Long term debt: (Details Textual) $ in Thousands, $ in Thousands		1 Months Ended		12 Months Ended
	Jun. 02, 2017	Jun. 24, 2015 MXN ($)	Mar. 22, 2013 MXN ($)	Dec. 31, 2017 MXN ($)		Dec. 31, 2016	[1]	Dec. 31, 2017 USD ($)	Jun. 24, 2015 USD ($)	Mar. 22, 2013 USD ($)
Borrowings, maturity				2022
Senior secured notes due on March 22, 2035 [Member]
Notional amount			$ 4,471,000	$ 7,489,465				$ 400,000	$ 50,000	$ 350,000
Borrowings, interest rate			5.75%							5.75%
Borrowings, maturity		March 22, 2035	March 22, 2035
Debt Instrument, Quoted Yield			2.39%
Spread Credit			336							336
Aerostar Airport Holdings, LLC [Member]
Proportion of ownership interest in subsidiary	60.00%			60.00%	[1]	60.00%
Aerostar Airport Holdings, LLC [Member] | Senior secured notes due on March 22, 2035 [Member]
Notional amount		$ 737,000
Borrowings, interest rate		6.75%							6.75%

[1] These subsidiaries sub-consolidate at the Cancún Airport.

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Stockholders' Equity: (Details) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Number of shares authorised	7,767,276	7,767,276
Issued capital	$ 7,767,276	$ 7,767,276
B Series [member]
Number of shares authorised	7,173,079	7,173,079
Issued capital	$ 277,050,000	$ 277,050,000
BB Series [member]
Number of shares authorised	594,197	594,197
Issued capital	$ 22,950,000	$ 22,950,000

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Stockholders' Equity: (Details 1)	12 Months Ended
	Dec. 31, 2017
Not later than one year [member]
Dividend Incentive Tax Rate, Percentage	1.00%
Later than one year and not later than two years [member]
Dividend Incentive Tax Rate, Percentage	2.00%
Later than two years and not later than three years [member]
Dividend Incentive Tax Rate, Percentage	5.00%

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Stockholders' Equity: (Details Textual) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Apr. 26, 2017	Dec. 31, 2016	Apr. 26, 2016
Issued capital	$ 7,767,276		$ 7,767,276
Number of shares authorised	7,767,276		7,767,276
Legal Reserve, Percentage of Allocation from Net Income	5.00%
Capital redemption reserve	$ 7,052,635		$ 5,045,254
Dividend payables		$ 1,848,000		$ 1,683,000
Dividend Declared, Tax on Dividends, Percentage	42.85%
Retained earnings	$ 9,949,654		8,155,159
Additional paid-in capital	$ 39,689,426		37,172,825
Tax rate Withholding Tax on Dividends	10.00%
Capital Stock Issued And Outstanding Reserve	20.00%
Fixed Capital Shares [member]
Issued capital	$ 1,000		1,000
Retained earnings			6,114,939
Variable Capital Shares [member]
Issued capital	7,766,276		$ 7,766,276
Retained earnings	$ 8,951,912

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Income tax incurred and deferred: (Details) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets	$ 327,020	$ 217,330
Deferred tax liabilities	(3,033,930)	(1,608,805)
Deferred tax liability (asset)	3,033,930	1,456,020	$ 1,523,722
Recoverable Asset Tax [member]
Deferred tax assets		152,785
Deferred tax liability (asset)	0	(152,785)	$ (186,875)
Not later than one year [member]
Deferred tax assets	73,710	30,615
Later than one year [member]
Deferred tax assets	253,010	33,930
Deferred tax liabilities	$ (3,360,950)	$ (1,673,350)

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Income tax incurred and deferred: (Details 1) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income taxes [Abstract]
Consolidated income before IT and joint venture equity method:			$ 8,498,889	$ 4,887,130	$ 3,962,934
Less: Net income before taxes of Airplan and Aerostar					16,011
Net income before taxes of subsidiaries in Mexico not subject to IT			(62,327)	(56,415)	(118,981)
Income before provisions for income taxes			$ 8,452,573	$ 4,830,715	$ 3,843,953
Statutory IT rate		33.00%	30.00%	30.00%	30.00%
ISR that would result from applying the ISR rate to book profit before income taxes			$ 2,535,772	$ 1,449,214	$ 1,153,186
Non-deductible items and other permanent differences			8,693	11,908	8,095
Gain on business combination					(2,108,760)
impairment of Goodwill					1,415,729
Annual adjustment for tax inflation			(2,406)	(10,974)	(10,924)
Temporary differences			(249,336)	(91,928)	(56,156)
Recognition of deferred income tax at the Huatulco Airport	[1]			44,020
Initial recognition for deferred IT consolidation in Aerostar			28,678
Initial recognition for IT consolidation in Airplan			10,214
Other			(3,137)	(1,056)	662
IT provision			$ (1,635,447)	$ (1,401,184)	$ (1,094,863)
Effective ISR rate			19.00%	29.00%	28.00%
Tax rate effect of tax losses	[1]		3.00%

[1] (1) Based on the tax projections at December 31, 2016, the Huatulco Airport is expected to pay income tax in the future. Accordingly, the Company decided to recognize deferred income tax. This recognition increased the effective rate by 3%.

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Income tax incurred and deferred: (Details 2) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current deferred income tax:
Deferred tax assets, current		$ 73,710	$ 30,615
Non-current deferred income tax:
Deferred tax assets, non-current		253,310	33,930
Deferred income tax asset		327,020	64,545
Non-current deferred income tax payable:
Non-current deferred income tax liability		(3,360,950)	(1,673,350)
Amortization of deferred expenses		(1,375)	(709)
Total deferred income tax, net		(3,033,930)	(1,608,805)
Deferred tax liability (asset)		3,033,930	1,456,020	$ 1,523,722
Allowance for credit losses [member]
Non-current deferred income tax:
Deferred tax assets, non-current		44,916	33,930
Non-current deferred income tax payable:
Deferred tax liability (asset)		(44,916)	(33,930)	(31,576)
Recoverable Asset Tax [member]
Non-current deferred income tax:
Deferred income tax asset			152,785
Non-current deferred income tax payable:
Deferred tax liability (asset)		0	(152,785)	$ (186,875)
Accrued Liabilities [member]
Current deferred income tax:
Deferred tax assets, current		48,439	30,615
Advances [Member]
Current deferred income tax:
Deferred tax assets, current		25,271
bank Loan fair Value [Member]
Current deferred income tax:
Deferred tax assets, current			208,394
Fixed assets and concession [Member]
Non-current deferred income tax payable:
Non-current deferred income tax liability	[1]	(2,900,893)	(1,672,641)
Deferred Income [Member]
Non-current deferred income tax payable:
Non-current deferred income tax liability		$ (458,682)

[1] ncludes Ps.267,307 and Ps.357,563 from Aerostar and Airplan only in, 2017.

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Income tax incurred and deferred: (Details 3) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Beginning Balances	$ 1,456,020	$ 1,523,722
Proceeds from asset tax recovery		34,090
Tax charged or credited in the comprehesive income statement		(101,792)
Increase (decrease) in deferred tax liability (asset)		(67,702)
Ending Balances	3,033,930	1,456,020
Provision for load portfolio impairment
Beginning Balances	(33,930)	(31,576)
Proceeds from asset tax recovery
Tax charged or credited in the comprehesive income statement		(2,354)
Increase (decrease) in deferred tax liability (asset)	(10,986)	(2,354)
Ending Balances	(44,916)	(33,930)
Concessioned assets
Beginning Balances	1,672,641	1,766,981
Proceeds from asset tax recovery
Tax charged or credited in the comprehesive income statement		(94,340)
Increase (decrease) in deferred tax liability (asset)	(261,412)	(94,340)
Ending Balances	2,858,318	1,672,641
Recoverable asset tax
Beginning Balances	(152,785)	(186,875)
Proceeds from asset tax recovery	152,785	34,090
Tax charged or credited in the comprehesive income statement
Increase (decrease) in deferred tax liability (asset)	0	34,090
Ending Balances	0	(152,785)
Other
Beginning Balances	(29,906)	(24,808)
Proceeds from asset tax recovery
Tax charged or credited in the comprehesive income statement		(5,098)
Increase (decrease) in deferred tax liability (asset)	(20,352)	(5,098)
Ending Balances	$ 177,953	$ (29,906)

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Income tax incurred and deferred: (Details 4) - MXN ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Current tax assets, current		$ 82,891	$ 111,738
Income tax
Current tax assets, current		74,885	101,664
Asset tax
Current tax assets, current	[1]	$ 8,006	$ 10,074

[1] The balance as of December 31, 2017, was requested in return, at the date of this financial statements issuance said balance has not yet been recovered.

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Income tax incurred and deferred: (Details 5) - 12 months ended Dec. 31, 2017 $ in Thousands, $ in Thousands	MXN ($)	USD ($)
Unused tax losses for which no deferred tax asset recognised	$ 3,895,118	$ 198,124
Tax loss Year 2012 Expiring in 2027 [Member]
Unused tax losses for which no deferred tax asset recognised	$ 180,892	9,201
expiration Year	2027 years
Tax loss Year 2013 Expiring in 2028 [Member]
Unused tax losses for which no deferred tax asset recognised	$ 1,040,916	52,946
expiration Year	2028 years
Tax loss Year 2014 Expiring in 2029 [Member]
Unused tax losses for which no deferred tax asset recognised	$ 657,116	33,424
expiration Year	2029 years
Tax loss Year 2015 Expiring in 2030 [Member]
Unused tax losses for which no deferred tax asset recognised	$ 868,736	44,188
expiration Year	2030 years
Tax loss Year 2016 Expiring in 2031 [Member]
Unused tax losses for which no deferred tax asset recognised	$ 1,147,456	$ 58,365
expiration Year	2031 years

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Income tax incurred and deferred: (Details Textual) $ in Thousands, $ in Thousands	2 Months Ended	12 Months Ended
	Dec. 31, 2017 MXN ($)	Dec. 31, 2018	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 COP ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)	Oct. 19, 2017 MXN ($)	Jun. 02, 2017 MXN ($)
Share of profit (loss) of associates accounted for using equity method			$ 6,358,687		$ 5,051,189
Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce current tax expense			$ 86,083		$ 93,975
Applicable tax rate		33.00%	30.00%	30.00%	30.00%	30.00%
Asset Tax, percentage Refundable			10.00%	10.00%
Income taxes paid (refund)			$ 211,675		$ 50,716
Tax expense (income), continuing operations			(1,635,447)		(1,401,184)	$ (1,094,863)
Surcharge tax			$ 2,933
Description of applicability of tax law			Law 1739 of December 23, 2014 in force, establishes the determination and payment of a surcharge on income tax for equity - CREE, which is the responsibility of the taxpayers of this tax and applies to a taxable base higher than the COP800,000, which is equivalent to 6%.	Law 1739 of December 23, 2014 in force, establishes the determination and payment of a surcharge on income tax for equity - CREE, which is the responsibility of the taxpayers of this tax and applies to a taxable base higher than the COP800,000, which is equivalent to 6%.
Deferred tax expense (income)			$ (932)		(932)	(5,259)
Income recognised as a result of asset tax			$ 58,890
Asset tax recoverable period			10 years	10 years
Aerostar [Member]
Deferred tax expense (income)			$ 267,307
Airplan [Member]
Deferred tax expense (income)			357,563
Top of range [member]
Profit (loss) from continuing operations				$ 800,000
Aerostar Airport Holdings, LLC [Member]
Deferred tax liabilities recognised as of acquisition date								$ 808,894
Aeropuertos Centro Norte, S. A. [Member]
Deferred tax liabilities recognised as of acquisition date							$ 861,483
Puerto Rico [Member]
Share of profit (loss) of associates accounted for using equity method			$ 77,551
Applicable tax rate			10.00%	10.00%
Colombia [Member]
Share of profit (loss) of associates accounted for using equity method			$ 48,877
Applicable tax rate			34.00%	34.00%
Applicable tax rate, surcharge			6.00%	6.00%
Colombia [Member] | Liquid equity [Member]
Share of profit (loss) of associates accounted for using equity method	$ 23,462
Investments rate of return	3.00%
Provision for taxes other than income tax [member]
Current tax expense (income)			$ 932		$ 932	$ 5,259

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Balances and transactions with related parties: (Details) - MXN ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Accounts receivable:
Receivables due from related parties		$ 437	$ 1,886,546
(**) Accounts payable and accumulated expenses (Note 10):
Payables to related parties		(87,951)	(71,725)
Trade and other receivables payables to related parties		(87,514)	1,814,821
Aerostar [member]
Accounts receivable:
Receivables due from related parties	[1]
Autobuses Golfo Pacífico, S. A. de C. V [member]
Accounts receivable:
Receivables due from related parties		390
Lava Tap de Chiapas, S. A. de C. V. [member]
(**) Accounts payable and accumulated expenses (Note 10):
Payables to related parties		(1,047)	(338)
Inversiones y Tecnicas Aeroportuarias, S. A. de C. V. [member]
(**) Accounts payable and accumulated expenses (Note 10):
Payables to related parties	[2]	$ (82,771)	$ (71,837)

[1] At December 31, 2016, the amount of the loan were Ps.1,874,129 plus Ps12,417 due to interest accrued on the year. In 2016 and 2017 the capital was paid in the amount of Ps.325,693 and Ps.304,564, respectively.

[2] These are accounts with terms of less than one year under similar market conditions.

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Summary of the main accounting policies: (Details 1)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fixtures and fittings [member]
Useful lives or depreciation rates, property, plant and equipment	10 to 20%	10%
Machinery [member]
Useful lives or depreciation rates, property, plant and equipment	10 to 20%	10%
Computer Equipment [Member]
Useful lives or depreciation rates, property, plant and equipment	33 to 20%	33%
Transportation equipment [Member]
Useful lives or depreciation rates, property, plant and equipment	20 to 25%	25%
Improvements to leased premises [Member]
Useful lives or depreciation rates, property, plant and equipment	10%

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Balances and transactions with related parties: (Details 1) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commercial income:
Revenue	$ 12,589,818	$ 9,753,491	$ 8,994,597
Stockholders:
Technical assistance (Note 13.4)	(346,487)	(288,111)	(239,175)
Related parties:
Administrative services	204,418	204,843	196,990
Leasing	5,019	4,825	4,084
Other	144,322	114,347	84,852
Autobuses de Oriente, S. A. de C. V. [member]
Commercial income:
Revenue	11,770	9,615	8,274
Autobuses Golfo Pacífico, S. A. de C. V [member]
Commercial income:
Revenue	6,382	5,947	5,560
Coordinados de Mexico de Oriente, S. A. de C. V. [member]
Commercial income:
Revenue	139	134	141
Aerostar [member]
Interest income:
Aerostar (joint venture) (Note 8)	69,202	83,483	65,705
Related parties [member]
Related parties:
Administrative services
Leasing	(5,019)	(4,825)	(4,084)
Cleaning services	(10,239)	(9,541)	(9,084)
Other	$ (598)	$ (2,473)	$ (1,006)

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Balances and transactions with related parties: (Details 2) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Key management personnel compensation, short-term employee benefits	$ 84,642	$ 40,062	$ 34,693
Key management personnel of entity or parent [member]
Key management personnel compensation,fees	$ 4,974	$ 4,766	$ 5,975

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Balances and transactions with related parties: (Details Textual) - MXN ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Receivables due from related parties		$ 437	$ 1,886,546
Services expense		$ 207,303	144,462	$ 125,176
Contract Term		10 years
Agreement Term		15 years
Aerostar [member]
Receivables due from related parties	[1]
Capital paid, related party transaction		$ 304,564	325,693
Aerostar [member] | Loans [member]
Receivables due from related parties			1,874,129
Aerostar [member] | Accrued interest [member]
Receivables due from related parties			12,417
Inversiones y Tecnicas Aeroportuarias, S. A. de C. V. [member]
Explanation of nature and extent of renewal and termination options		The agreement is for an initial term of 15 years and renews automatically for subsequent five year periods, unless one of the parties issues the other a cancellation notice within a determined term prior to the programmed expiration date. The Company can only exercise its termination right through a resolution of the Shareholders.
Explanation of significant terms of service concession arrangement that may affect amount, timing and certainty of future cash flows		In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2 million (Ps41.2 million pesos).
Explanation of nature and extent of obligations to provide or rights to expect provision of services		The minimum fixed amount will increase annually by the inflation rate of the United States plus the added value tax over the amount of the payment. The Company entered into an amendment agreement for technical assistance and the transfer of knowledge, which establishes that the compensation will be paid on a quarterly basis beginning in January 1, 2008, and that such payments are to be deducted from the annual compensation.
Services expense		$ 344,487	$ 288,111	$ 239,175

[1] At December 31, 2016, the amount of the loan were Ps.1,874,129 plus Ps12,417 due to interest accrued on the year. In 2016 and 2017 the capital was paid in the amount of Ps.325,693 and Ps.304,564, respectively.

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Commitments and contingencies: (Details) - Office Lease Space [Member] $ in Thousands	Dec. 31, 2017 MXN ($)
Minimum lease payments payable under non-cancellable operating lease	$ 16,117
Not later than one year [member]
Minimum lease payments payable under non-cancellable operating lease	5,372
Later than one year [member]
Minimum lease payments payable under non-cancellable operating lease	$ 10,745

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Commitments and contingencies: (Details 1) $ in Thousands	Dec. 31, 2017 MXN ($)
Two thousand eighteen [member]
Contractual capital commitments	$ 340,645	[1]

[1] Figures in pesos adjusted to December 31, 2017, based on the National Construction Price Index (IPCO, by its acronym in Spanish) in accordance with the terms of the MDP.

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Commitments and contingencies: (Details Textual) $ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	May 21, 2015 MXN ($)	May 21, 2015 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)
Contingent rents recognised as expense	$ 444,000	$ 21,547
Lease and sublease payments recognised as expense			$ 5,019	$ 4,825	$ 4,084
Explanation of contractual obligations to purchase, construct or develop investment property or for repairs, maintenance or enhancements			Pursuant to the terms for the purchase of the land in Huatulco that occurred in October 2008, the Company has the obligation to build 450 hotel rooms, for which purpose the Company will enter into agreements with third parties to develop the comprehensive tourism plan without a specific due date.
Aeropuerto de Cancun, S. A. de C. V. [member]
Description of nature of obligation, contingent liabilities in business combination			At the time that the Company was carrying out the competitive bidding process for the sale of shares of the Airport Groups, the SCT established and communicated that concessionaires could amortize for tax purposes the value of the concession up to 15% a year. In February 2012, the SCT estimated an amount due payable by Cancún in the amount of Ps.865 million pesos against the ruling in question, because it considered that the determination of the 15% amortization was not valid in 2006 and 2007.
Aeropuerto de Cancun, S. A. de C. V. [member] | Legal proceedings contingent liability [member]
Legal proceedings provision			$ 116
Aeropuerto de Cancun, S. A. de C. V. [member] | Contingent liability arising from post-employment benefit obligations [member]
Legal proceedings provision			$ 20

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Summary of the main accounting policies: (Details)			12 Months Ended
		Jun. 02, 2017	Dec. 31, 2017		Dec. 31, 2016
Aeropuerto de Cancun, S. A. de C. V.
Proportion of ownership interest in subsidiary	[1],[2]		100.00%		100.00%
Principal activity of business of subsidiary	[1],[2]		Airport services		Airport services
Aeropuerto de Cozumel, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Merida, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Huatulco, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Oaxaca, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Veracruz, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Villahermosa, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Tapachula, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Aeropuerto de Minatitlan, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Airport services		Airport services
Cancun Airport Services, S. A. de C. V.
Proportion of ownership interest in subsidiary	[3]		100.00%		100.00%
Principal activity of business of subsidiary	[3]		Airport services		Airport services
RH Asur, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Administrative services		Administrative services
Servicios Aeroportuarios del Sureste, S. A. de C. V.
Proportion of ownership interest in subsidiary			100.00%		100.00%
Principal activity of business of subsidiary			Administrative services		Administrative services
Asur FBO, S. A. de C. V.
Proportion of ownership interest in subsidiary	[3]		100.00%		100.00%
Principal activity of business of subsidiary	[3]		Administrative services		Administrative services
Caribbean Logistics, S. A. de C. V.
Proportion of ownership interest in subsidiary	[3]		100.00%		100.00%
Principal activity of business of subsidiary	[3]		Cargo services		Cargo services
Cargo RF, S. A. de C. V.
Proportion of ownership interest in subsidiary	[3]		100.00%		100.00%
Principal activity of business of subsidiary	[3]		Cargo services		Cargo services
Sociedad Operadora de Aeropuertos Centro Norte, S. A.
Proportion of ownership interest in subsidiary	[3]		92.42%		92.42%
Principal activity of business of subsidiary	[3]		Airport services		Airport services
Aerostar Airport Holdings, LLC
Proportion of ownership interest in subsidiary		60.00%	60.00%	[3]	60.00%	[3]
Principal activity of business of subsidiary	[3]		Airport services		Airport services

[1] Aeropuerto de Cancún, S. A. de C. V. acquired on October 19, 2017 a 92.42% equity interest in Sociedad Operadora de Aeropuertos Centro Norte, S. A. (Airplan), Company that holds the concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the Enrique Olaya Herrera in Medellín, José María Córdoba in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports, and from that date Airplan’s results have been incorporated line-by-line in the Company’s and Cancún Aiport’s financial statements.

[2] Cancún held a 50% stake in Aerostar until May 26, 2017, which was accounted as a joint venture. See Note 9. As of May 26, 2017, the Cancún Airport acquired an additional 10% equity interest in Aerostar. As a result of this acquisition, the Company has a 60% shareholding and now controls Aerostar, therefore Aerostar is consolidated in the Company’s financial statements.

[3] These subsidiaries sub-consolidate at the Cancún Airport.

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Summary of the main accounting policies: (Details 2)	12 Months Ended
	Dec. 31, 2017
Licences and franchises [member]
Useful lives or amortisation rates, intangible assets other than goodwill	31 Years
ODC [Member]
Useful lives or amortisation rates, intangible assets other than goodwill	31 Years
Commercial Rights [Member] | Aerostars [Member]
Useful lives or amortisation rates, intangible assets other than goodwill	36 Years
Commercial Rights [Member] | Airplan [Member]
Useful lives or amortisation rates, intangible assets other than goodwill	15 Years

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Summary of the main accounting policies: (Details Textual) $ in Thousands, shares in Millions	1 Months Ended		12 Months Ended
	May 26, 2017	Apr. 30, 2017	Dec. 31, 2018	Dec. 31, 2017 MXN ($) shares	Dec. 31, 2016 MXN ($) shares	Dec. 31, 2015 MXN ($)	Apr. 25, 2018	Oct. 19, 2017	Sep. 20, 2017
Applicable tax rate			33.00%	30.00%	30.00%	30.00%
Termination benefits expense				$ 1,984	$ 1,237	$ 1,133
Weighted average number of ordinary shares outstanding | shares				300	300
Closing foreign exchange rate							18.28		19.66
Gain (loss) that relates to identifiable assets acquired or liabilities assumed in business combination and is of such size, nature or incidence that disclosure is relevant to understanding combined entity's financial statements				$ 7,029,200
Aeropuerto de Cancún, S. A. de C. V. [Member]
Proportion of ownership interest in joint venture		50.00%		60.00%
Mexican Peso [Member]
Applicable tax rate				30.00%	30.00%
Closing foreign exchange rate				19.66	20.61
Colombian pesos [Member]
Closing foreign exchange rate				151.86
Other property, plant and equipment [member]
Useful lives or depreciation rates, property, plant and equipment				10
Aerostar [member]
Proportion of ownership interest in joint venture	50.00%
Applicable tax rate				10.00%
Percentage of voting equity interests acquired	10.00%							92.42%
Proportion of voting rights held in subsidiary				60.00%
Gain (loss) that relates to identifiable assets acquired or liabilities assumed in business combination and is of such size, nature or incidence that disclosure is relevant to understanding combined entity's financial statements				$ 7,029,200

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Financial risk management: (Details) $ in Thousands, $ in Thousands	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2016 USD ($)
Asset	$ 56,614,103		$ 29,216,091
Liability	$ 22,925,802		$ 6,462,137
Currency risk [member]
Asset		$ 50,905		$ 188,765
Liability		148,417		218,125
Net assets at period closing		$ (97,512)		$ (29,360)

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Financial risk management: (Details 1) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long term debt	$ 7,149,177
Accounts payable and accrued expenses	2,101,862	475,234
Not later than three months [member]
Bank loans and interest	177,080	58,336
Long term debt	337,107
Suppliers	428,881	11,401
Accounts payable and accrued expenses	1,175,306	347,190
Later than three months and not later than one year [member]
Bank loans and interest	606,433	44,332
Long term debt	317,789
Later than one year and not later than two years [member]
Bank loans and interest	880,357	709,307
Long term debt	633,140
Later than two years and not later than five years [Member]
Bank loans and interest	12,146,826	$ 3,648,801
Long term debt	$ 11,442,620

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Financial risk management: (Details 2) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial risk management [Abstract]
Current assets	$ 5,787,862	$ 4,233,018
Current liabilities	2,408,649	593,183
Short term position (liquidity)	$ 3,379,213	$ 3,639,835

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Financial risk management: (Details Textual) $ in Thousands, $ in Thousands, $ in Thousands				1 Months Ended		7 Months Ended		12 Months Ended
	Jun. 02, 2017 MXN ($)	Mar. 08, 2017 USD ($)	Mar. 08, 2017 COP ($)	Oct. 19, 2017 MXN ($)	Mar. 17, 2014 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 MXN ($)	Dec. 31, 2016 MXN ($)	Dec. 31, 2015 MXN ($)	Apr. 25, 2018	Sep. 20, 2017
Borrowings, interest rate basis								London Inter Bank Offered Rate (LIBOR) plus 1.85%
Borrowings, maturity								2022
Comprehensive income								$ 6,169,315	$ 4,028,903	$ 3,186,955
Closing foreign exchange rate											18.28	19.66
Foreign exchange gain (loss)								192	91
Receivables due from related parties						$ 437		$ 437	$ 1,886,546
Percentage of increase decrease in foreign exchange rate								10.00%	15.00%
Expenses due to natural calamities						294,900	$ 15,000
Loss Contingency, Compensation Sought value		$ 135,779	$ 20,619		$ 1,400
Description of annual compensation								In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2 million (Ps41.2 million pesos).
Airplan [Member]
Key management personnel compensation				$ 3,268
Aerostar [Member]
Comprehensive income						$ 241,157
Key management personnel compensation	$ 34,879
Mexican Peso [Member]
Closing foreign exchange rate						19.66		19.66	20.61
Cancun Airport Services, S. A. de C. V. [member]
Percentage of entity's revenue								59.09%	69.81%	69.58%
Grupo Mexicana [member]
Receivables due from related parties						$ 128		$ 128
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets								$ 128
Increase in interest rate [member] | Floating interest rate [member]
Borrowings, adjustment to interest rate basis									2.59%
Comprehensive income									$ 1,476
Decrease in interest rate [member] | Floating interest rate [member]
Borrowings, adjustment to interest rate basis									4.13%
Comprehensive income									$ 1,659

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Critical accounting judgments and key sources of estimation uncertainty: (Details Textual) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of changes in accounting estimates [abstract]
Expected credit loss rate	15.00%	15.00%
Increase (decrease) through changes in models or risk parameters, financial assets	$ 28	$ 19

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Consolidated statements of cash flows: (Details) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 19, 2017
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]
Accounts payable	$ 340,288
Bank loans (Note 11)	173,471	$ 58,336
Bank loans (Note 11)	10,321,382	4,402,440
Long-term debt (Note 12)	7,149,177
Non-current portion of non-current secured bank loans received	4,460,776	3,678,128
Finance costs	618,831	126,186	$ 97,017
Borrowing costs incurred	295,834
Proceeds from bank loans	8,000,000
Interest paid, classified as financing activities	628,222	106,873	97,017
Interest paid on long term debt	(277,068)
Repayments of borrowings, classified as financing activities	5,339,338
Repayments of bonds, notes and debentures	102,907
Foreign currency translation on bank loan	217,385
Foreign currency translation on long term debt	390,643
Exchange (income) / loss on foreign currency	(240,711)	763,335
Non-current portion of non-current secured bank loans received	10,494,853	$ 4,460,776	$ 3,678,128
Borrowings	7,489,465
Airplan [Member]
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]
Bank loans (Note 11)				$ 3,424,897
Bank loans (Note 11)	3,424,897
Aerostar and Airplan [Member]
Disclosure Of Consolidated Statements Of Cash Flows [Line Items]
Long-term debt (Note 12)	$ 7,182,963

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Summary of the main accounting policies:

12 Months Ended

Dec. 31, 2017

Significant accounting policies [Abstract]

Disclosure of significant accounting policies [text block]

Note 18 - Summary of the main accounting policies:

In the following section, we outline the main standards, interpretations or changes to existing standards in effect for the first time for the period beginning on or after January 1, 2017:

18.1) New standards and amendments not yet adopted

New standards, amendments and interpretations effective for periods beginning on or after January 1, 2017, 2018 and 2019.

Standards applicable as of January 1, 2017 that had no significant effects on the reporting of the Company's consolidated financial statements.

- Disclosure Initiatives - Amendments to IAS 7. It will be necessary to explain any changes in liabilities arising from financing activities, including changes arising from cash flows (resources obtained and loan payments), and non-monetary changes, such as acquisitions, disposals, interest accrued and unrealized exchange differences. The changes in financial assets must be included in this disclosure if the cash flows were, or will be, included in the cash flows from financing activities. This might be the case of assets covering liabilities arising from financing liabilities.

Standards in effect as from January 1, 2018 and 2019.

- IFRS 15 “Revenue from contracts with clients” (effective as of January 1, 2018). The IASB has issued a new standard for recognizing revenue. IFRS 15 will replace IAS 18, which covers contracts for goods and services and IAS 11, which covers construction contracts. The new standard is based on the principle that revenue is recognized when control of a good or service is transferred to a customer - therefore, the notion of control replaces the existing notion of risks and rewards. A five-step process must be applied before income can be recognized; identifying contracts with the respective customers; identifying the separate yield obligation; determining the transaction price in the contract; assigning the transaction price of each yield obligation, and recognizing income when each yield obligation is met.

- The key change to the current practice is: any distinguishable product or service package must be recorded separately, and any discount or price mark-down in the contract must be assigned to its specific element separately. Income may be recorded earlier than required by the current rules if the consideration varies for any reason (incentives, reductions, yield charges, royalties, success results, etc.). Minimum amounts must be recorded if not at risk of reversal (as established in IFRS 15). The point at which income can be recorded may vary. A portion of the income currently recorded at one point in time upon conclusion of a contract may have to be recorded throughout the term of the contract and vice a versa.

Entities must apply IFRS 15 using one of the following two methods:

⋅ Retrospective method. Requires applying IFRS 15 to each reporting period, i.e., restating prior periods in accordance with IAS 8 “Accounting policies, changes in accounting estimates and errors”.

⋅ Modified retrospective method. Requires applying IFRS 15 only at the date of adoption and no adjustments need be made to prior reporting periods. Under that method, entities must recognize the accrued effect of first-time application of IFRS 15 as an adjustment to the retained earnings opening balance (or any other component of capital, as the case may be) in the period of first-time application. Comparative periods reported need no adjustments. For example, if the entity adopts IFRS 15 on January 1, 2018, the accrued effect would have to be recognized in retained earnings on January 1, 2018.

In 2017, the Company's Management carried out an inventory survey of all contracts with customers. The correct fulfillment of the performance obligations of the contracts was verified, and their validation of the prices stipulated by type of service, the results obtained reveal the evidence that there will be no significant impact in the annual consolidated financial statements by the adoption of IFRS 15 ; However, in order to further deepen its analysis, the Company analyzes whether the regulated monthly income could have an impact on its recognition in the interim periods throughout the year. The method that the Company has considered to use is the modified retrospective.

At January 1, 2017, no changes have been made as a result of applying IFRS 15, since, as mentioned in the preceding paragraphs, the changes arising from the new standard refer to reclassifications made in different captions of the statement of comprehensive income with no effects on the valuation thereof, which means that there were no changes in the net profit for 2016, which amount is include in retained earnings in the comparative statement of comprehensive income at December 31, 2017.

- Amendments to IFRS 15 “Revenue from contracts with customers” (effective as of January 1, 2018) - The amendments include the guidelines for identifying yield obligations, accounting for intellectual property licenses and evaluating the principal vs. the agent (reporting of gross income vs. reporting of net income), including additional practical files related to the transition to the new standard. In general terms, those amendments include:

a. The guidelines to determine when the promises for goods or services in an agreement are different and, therefore, when they should be accounted for separately. The amendments specifically explain how to determine if the goods or services can be identified separately from other contractual promises and they establish that the objective is to determine whether the nature of an entity's promise is to transfer individual goods or services to a customer, or to transfer a combined product (or products) whereby the individual goods and services are considered supplies. The amendment has no significant effects on the Company, as there are no different yield obligations in the respective lease agreements.

b. The guidelines regarding industrial property licenses for determining when income from an intellectual property license must be recorded “over time” or when it must be recorded “in a specific moment in time”. That amendment has not effects on the Company as it does not conduct that type of transactions.

c. Guidelines explaining that the principal in an agreement controls the goods or services before they are transferred to a customer. The amendments provide specific revisions to explain the relationship between the principle and the indicators of control, the “account unit” for conducting evaluations and the manner of applying the control principle to services. The IASB also amended the indicator structure in order for it to indicate when the entity is the principal rather than indicating when it is an agent, and it eliminated two indicators: 1) the entity's consideration is in the form of a commission, and 2) the entity is not exposed to credit risk.

- IFRS 9 “Financial instruments and amendments associated to other standards” (effective as of January 1, 2018). IFRS 9 replaces the classification and measurement models of IAS 39 “Financial instruments: Recognition and measurement, with a single model that initially has only two classification categories: amortized cost and fair value. Classification of debt assets will be driven by the entity's business model for managing the financial assets and the contractual cash flow characteristics of financial assets. A debt instrument is measured at amortized cost if: a) the purpose of the business model is to maintain the financial asset for generating contractual cash flows, and b) the instrument's contractual cash flows merely represent the payment of principal and interest. All other debt and equity instruments, including investments in complex debt and equity instruments, must be recognized at fair value.

All financial asset movements are recorded in the statement of income, except for equity instruments that are not held for sale, which may be recorded in the statement of income or in the respective reserves (without being subsequently recycled to the statement of income).

As regards financial liabilities measured at fair values, entities must recognize a portion of the changes in fair value arising from changes in credit risk in other comprehensive income rather than in the statement of income. The new hedge accounting rules (released in December 2013) align hedge accounting more closely with common risk management practices. As a general rule, it will be easier to apply hedge accounting. The new standard also introduces additional disclosure requirements and changes in presentation. In June 2014, the IASB made further changes to the classification and measurement rules and also introduced a new impairment model. With these amendments, IFRS 9 is now complete. The changes introduce: a third measurement category (fair value through OCI) for certain financial assets that qualify as capital instruments; a new model of expected loan losses involving a3-stage approach whereby financial assets go through the three phases as their credit quality changes. The stage dictates how an entity must measure impairment losses and apply the effective interest method. A simplified approach is permitted for financial assets that lack a significant financial component (e.g., account receivable). During initial recognition, entities record losses on day one equal to expected credit losses over 12 months (or the lifetime of expected credit losses from accounts receivable), unless assets are considered to be impaired as concerns credit. For financial periods starting before February 1, 2015, entities may opt for early application of IFRS 9 with respect to the following: credit risk requirements for financial liabilities; classification and measurement requirements for financial assets and liabilities and hedge accounting.

The Company initially recognizes the bank loans obtained at their fair value net of the costs incurred in the transaction, subsequently they are recorded at their amortized cost. Therefore, in this sense, the Company does not consider that the adoption of this new standard would have an effect on its accounting records. On the other hand, the Administration continues with the evaluation of the effects of the adoption of this new standard in its accounts receivable and within its assessments of the elements of the standard, considers that it could have a non-significant impact within the Determination of the estimate for losses of accounts receivable, which will be determined on expected losses, and not incurred as is currently done. The Company is in the process of determining the monetary effect of this change, and is analyzing each item receivable to determine the probable effect of non-recovery. As regards the new hedging rules, there will be no effect as the Company does not hold any instrument subject to this accounting treatment.

- IFRS 16 Leases (mandatory for financial years commencing on or after 1 January 2019). IASB issued in January 2017 and 2016 a new standard for lease accounting. This standard will replace the current IAS 17 standard, which classifies leases into financial and operating leases. IAS 17 identifies leases as financial when the risks and benefits of an asset are transferred and as operations to the rest of the leases. IFRS 16 eliminates the classification between financial and operating leases, and requires the recognition of a liability reflecting future payments and an asset for “right to use” in the majority of leases. The IASB has included some exceptions in short-term leases and in low-value assets. The above modifications are applicable for the lessee’s accounting, while for the lessor they remain similar to the current ones. The most significant effect of the new requirements would be reflected in an increase in lease assets and liabilities, also having an effect on the income statement in the depreciation and financing expenses for the assets and liabilities recognized, respectively, and decreasing the expenses related to leases previously recognized as operating leases. The standard is effective for periods beginning on or after January 1, 2019.

The standard is effective for periods beginning on or after January 1, 2019, with early adoption permitted if IFRS 15 is also adopted.

On the date of issuance of the consolidated financial statements, the Administration is in the process of evaluating, identifying and quantifying the leases in the balance sheet and the income statement. The Company expects to conclude its analysis during the next year.

There are no other additional standards, amendments or interpretations issued but not yet in effect that could significantly impact the Company.

18.2) Consolidation

The Company's consolidated subsidiaries in which it holds shares at December 31, 2016 and 2017 are as follows:

	Shareholding
	percentage (%)		Main activity
Aeropuerto de Cancún, S. A. de C. V. (*)(**)	100.00	%	Airport services
Aeropuerto de Cozumel, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Mérida, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Huatulco, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Oaxaca, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Veracruz, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Villahermosa, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Tapachula, S. A. de C. V.	100.00	%	Airport services
Aeropuerto de Minatitlán, S. A. de C. V.	100.00	%	Airport services
Cancún Airport Services, S. A. de C. V. (***)	100.00	%	Airport services
RH Asur, S. A. de C. V.	100.00	%	Administrative services
Servicios Aeroportuarios del Sureste, S. A. de C. V.	100.00	%	Administrative services
Asur FBO, S. A. de C. V. (***)	100.00	%	Administrative services
Caribbean Logistics, S. A. de C. V. (***)	100.00	%	Cargo services
Cargo RF, S. A. de C. V. (***)	100.00	%	Cargo services
Sociedad Operadora de Aeropuertos Centro Norte, S. A. (***)	92.42	%	Airport services
Aerostar Airport Holdings, LLC (***)	60.00	%	Airport services

^(*) Cancún held a 50% stake in Aerostar until May 26, 2017, which was accounted as a joint venture. See Note 9. As of May 26, 2017, the Cancún Airport acquired an additional 10% equity interest in Aerostar. As a result of this acquisition, the Company has a 60% shareholding and now controls Aerostar, therefore Aerostar is consolidated in the Company’s financial statements.

^(**) Aeropuerto de Cancún, S. A. de C. V. acquired on October 19, 2017 a 92.42% equity interest in Sociedad Operadora de Aeropuertos Centro Norte, S. A. (Airplan), Company that holds the concession for the administration, operation, commercial exploitation, adaptation, modernization and maintenance of the Enrique Olaya Herrera in Medellín, José María Córdoba in Rionegro, El Caraño in Quibdó, Los Garzones in Montería, Antonio Roldán Betancourt in Carepa and Las Brujas in Corozal airports, and from that date Airplan’s results have been incorporated line-by-line in the Company’s and Cancún Aiport’s financial statements.

⁽***⁾ These subsidiaries sub-consolidate at the Cancún Airport.

Aerostar records and reports its financial information according to U.S. generally accepted accounting principles (US GAAP) and in USD. For purposes of consolidating Aerostar into the Company, a translation to Mexican pesos is performed and a reconciliation from US GAAP to IFRS is carried out. The exchange rate used at 2017 year end was Ps.19.66 Mexican pesos per dollar.

Airplan records and reports its financial information in IFRS as adopted in Colombia and their corresponding IFRIC issued by the IASB and in Colombian pesos. For purposes of consolidating Airplan into the Company, a translations to Mexican pesos is performed. The exchange rate used at 2017 year end was $151.86 Colombian pesos per Mexican peso.

(a) Subsidiaries

Subsidiaries are all entities over which the Company has control. The Company controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. Subsidiaries are fully consolidated from the date on which control is transferred to the Company. They are deconsolidated from the date that control ceases.

Intercompany transactions, balances, revenues and expenses due to transactions between the group companies were eliminated. Non-realized results were also eliminated. The subsidiaries’ accounting policies are consistent with the policies adopted by the Company. The Company uses the purchase method to recognize business acquisitions. The consideration for the acquisition of a subsidiary is determined based on the fair value of the net assets transferred, the liabilities assumed and the capital issued by the Company.

The Company defines a business combination as a transaction in which it obtains control of a business, through which it has the power to govern and manage the relevant activities of the of assets and liabilities of said business with the purpose of providing return in the form of dividends, lower costs or other economic benefits directly to investors.

The consideration transferred in the acquisition of a subsidiary is the fair value of the assets transferred, the liabilities incurred and the equity interests issued by the Company. The consideration transferred includes the fair value of any asset or liability that results from a contingent consideration agreement. The identifiable assets acquired, the liabilities and contingent liabilities assumed in a business combination are initially measured at their fair value on the date of acquisition. The Company recognizes any non-controlling interest in the acquired entity based on the proportional part of the non-controlling interest in the net identifiable assets of the acquired entity.

Costs related to the acquisition are recognized as expenses in the consolidated statement of income as incurred.

Goodwill is initially measured as the excess of the consideration paid and the fair value of the non-controlling interest in the acquired subsidiary over the fair value of the identifiable net assets and the liabilities acquired. If the consideration transferred is less than the fair value of the net assets of the acquired subsidiary in the case of a purchase at a bargain price, the difference is recognized directly in the consolidated statement of income. If the business combination is reached in stages, the book value at the date of acquisition of the participation previously held by the Company in the acquired entity, is remeasured at its fair value at the acquisition date. Any loss or gain resulting from such remeasurement is recognized in the results of the year. At the date of the measurement made by Management, a gain in business combination of Ps.7,029,200 was determined on the Aerostar acquisition, which was reflected in the consolidated statement of comprehensive income. See Note 8.1.

(b) Changes in the interests of subsidiaries without loss of control

Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions, which are transactions with shareholders in their capacity as owners. The difference between the fair value of the consideration paid and the interest acquired in the carrying value of the net assets of the subsidiary is recorded in stockholders’ equity. Gains or losses on the sale of non-controlling interests are also recorded in stockholders’ equity.

(c) Disposal of subsidiaries

When the Company loses control over one entity, any retained interest in the entity is measured at fair value, recognizing the effect in income. Subsequently, the fair value is the initial carrying amount for the purpose of determining the retained interest as an associate, joint venture or financial asset, as appropriate. Additionally, the amounts previously recognized in Other Comprehensive Income (OCI) relating to those entities are canceled as though the Company had directly disposed of the related assets or liabilities. This means that the amounts previously recognized in OCI are reclassified to income for the period.

(d) Investment in joint ventures is accounted for under the equity method

The Company applied the guidance under IFRS 11 to the agreement entered into with Highstar for the operation of the LMM Airport through Aerostar as of the initial operation date of February 27, 2013. Under IFRS 11, “Joint arrangements” operations are classified as joint operations or joint ventures depending on the contractual rights and obligations of each investor. The Company has evaluated the nature of its operations and has determined that it is a joint venture. Joint ventures are recorded by the equity method.

Under the equity method, the interest in the joint business is recognized initially at cost and it is subsequently adjusted to recognize the Company's interest in the earnings after the acquisition, or losses and movements in OCI. When the Company's interest in the losses of a joint business is the same as or higher than its interest in said business (which includes all long-term interest that forms part of the net investment of the Company in the joint venture), the Company does not recognize additional losses, unless it has incurred obligations or made payments on behalf of the joint venture.

Unrealized gains from transactions carried out between the Company and the joint business are eliminated based on the percentage of the Company's interest in the joint businesses. Unrealized losses are also eliminated, unless the transaction provides evidence of impairment in the transferred assets. The accounting policies for joint ventures have been changed when deemed necessary to guarantee adherence with the policies adopted by the Company.

In accordance with IFRS 3 “Business combinations”, as of June 1, 2017 the acquisition is considered a business combination conducted in stages, which means that the fair value of interest previously acquired was also revalued.

18.3) Translation of foreign currencies

Functional currency and reporting currency

Items included in the consolidated financial statements of each of the companies of the Company are measured in the currency of the primary economic environment in which the entity operates, i.e., its “functional currency” which is also the reporting currency. The consolidated financial statements are presented in (thousands of Mexican pesos), which is the Company's reporting currency.

18.3.1) Consolidation of subsidiaries with a functional currency different from the reporting currency

The results and financial position of Aerostar and Airplan (none of which handle a currency that corresponds to a hyperinflationary economy) expressed in a functional currency other than the reporting currency are converted to the reporting currency as follows.

(i) The assets and liabilities recognized in the consolidated statement of financial position are translated at the exchange rate on the balance sheet date.

(ii) The stockholders’ equity in the consolidated statement of financial position is translated using the historical exchange rates.

(iii) Income and expenses recognized in the consolidated statement of income are translated at the average exchange rate for each year (unless that average is not a reasonable approximation of the effect of translating the results derived from the exchange rates prevailing at transaction dates, in which case the Company uses the respective rates).

(iv) The resulting exchange differences are recognized within OCI.

Goodwill and fair value adjustments that arise on the date of acquisition of a foreign operation to measure them at fair value are recognized as assets and liabilities of the foreign entity and are converted at the closing exchange rate.

18.3.2) Transactions in foreign currency and results from exchange fluctuations

Operations carried out in foreign currency are recorded in the functional currency applying the exchange rates in effect at the transaction date or the exchange rate at the date of the valuation when the items are revalued.

Exchange differences arising from fluctuations in the exchange rates between the transactions and settlement dates, or the consolidated statement of financial position date, are recognized in the consolidated statements of comprehensive income.

18.4) Cash and cash equivalents

Cash and cash equivalents include cash, bank deposits and other highly liquid investments with low risk of changes in value with original maturities of three months or less. As of December 31, 2016 and 2017, cash and cash equivalents consisted primarily of peso and dollar denominated bank deposits and peso denominated investment bonds issued by the Mexican Federal Government.

18.5) Fiduciary rights

For the administration of the resources of the concession and the payment of the obligations in charge of the concessionaire, Airplan, a trust is constituted to which it transfers all of the gross income received and all the debt and capital resources it obtains for the execution of the concession.

18.6) Restricted cash and cash equivalents

Restricted cash includes cash and cash equivalents that are restricted in terms of withdrawal or use. The nature of the restrictions includes restrictions imposed by financing agreements, federal agency funds related to capital expenditures, for example, for purposes of Aerostar, PFC and Airport Improvement Program (AIP) or other reserves (for example, Fund for promotion and support of air travel).

Restricted cash and cash equivalents is presented as current if it is expected to be used within twelve months of the filing date. Any restricted fund beyond twelve months is recorded as non-current.

18.7) Financial assets

18.7.1) Classification and measurement

Upon their initial recognition, the Company classifies its financial assets into the following categories: loans and accounts receivables. The classification depends on the purpose for which the asset was acquired.

i. Financial assets at fair value through profit or loss

A financial asset is classified at fair value through profit or loss, if it is classified as held for trading or is designated as such on initial recognition. A financial asset is classified in this category if it is acquired mainly for the purpose of being sold in the short-term. The assets in this category are valued at fair value and the respective changes are recognized in income. Derivative financial instruments are also classified as held for trading, unless they are designated as hedges. At December 31, 2017 and 2016, the Company does not have operations of this nature.

ii. Loans and accounts receivable

Loans and accounts receivable are initially recognized at fair value plus transaction costs and are subsequently stated at amortized cost using the effective interest method less a provision for impairment. In practice, it is usually recognized at invoice amount, adjusted for estimated impairment of the account receivable. These items are shown under current assets, except for items with maturities over 12 months, which are classified as non-current assets.

The booked values of the financial instruments correspond in their entirety to the classification of the loans and accounts receivable.

18.7.2) Impairment of financial assets

The allowance for impairment of accounts receivable is established when there is objective evidence that the Company may not recover amounts receivable according to the original terms of the receivables. The Company analyzes the financial position of its debtors, delinquencies in its portfolio, and other factors to determine the amount of the estimated impairment. The amount of the provision is the difference between the carrying value of an asset and the present value of estimated future cash flows, discounted at the effective interest rate. The carrying amount of the asset is reduced through the use of a provision for uncollectable accounts and the amount of the loss is recognized in the consolidated profit or loss. When an account receivable is considered uncollectible, it is canceled against the allowance for doubtful accounts. Subsequent recoveries of amounts previously written off are credited to the consolidated comprehensive income statement.

18.8) Leasing

18.8.1) As lessor

The leasing of terminal space made by the Company in its capacity as lessor at the terminals is documented by contracts with either fixed income or monthly fees based on the higher amount of a minimum monthly fee or a percentage of the lessee’s monthly revenue.

Since the leased assets are part of the concession assets and thus do not belong to the Company, there is no transfer of the risks and rewards of ownership and therefore are classified as operating leases.

Revenues from operating leases are recognized as non-aeronautical revenues on a straight line basis over the lease term.

18.8.2) As lessee

The leases in which a significant portion of the risk and rewards related to ownership are retained by the lessor are classified as operating leases. The payments made under operating leases (net of any incentives received from the lessor) are charged to the statement of income based on the straight-line method over the lease term.

18.8.3) Financial leases

Property, plant and equipment leases in which Airplan holds substantially all the risks and rewards of ownership are classified as financial leases. Financial leases are capitalized at the beginning of the lease at the lower of the fair value of the leased asset and the present value of the minimum lease payments. Each financial lease payment is allocated between the liability and the financial costs. Financial lease obligations, net of the financial burden, are presented as debts (financial obligations), current or non-current, depending on whether or not payment maturities are below a 12-month period. Financial costs are charged to income for the year over the lease period so as to produce a periodic constant interest rate on the remaining balance of the liability for each period. Property, plant and equipment acquired under financial leases are depreciated over the shorter of the useful life of the asset and the lease term.

18.9) Land, furniture and equipment

Furniture and equipment are recorded at cost less accumulated depreciation and impairment loss. The cost includes expenses directly attributable to the acquisition of those assets and all costs associated with placing the assets in the location and in the condition necessary for them to operate as intended by Management.

Land is recorded at cost and it is not depreciated. Depreciation of other items of plant and equipment is calculated on the straight-line method based on the residual values over their estimated useful lives. The useful lives from the date of acquisition are 10 years. The useful lives at the acquisition date of the furniture and equipment are as shown below:

	2016	2017
Furniture equipment	10%	10 to 20%
Machinery	10%	10 to 20%
Computer equipment	33%	33 to 20%
Transportation equipment	25%	20 to 25%
Improvements to leased premises		10%

The residual values, useful life and depreciation method are reviewed and adjusted, if necessary, on an annual basis.

18.9.1) Land

Land represents a territorial extension for which the Company has an obligation of constructing 450 hotel rooms along with the National Tourism Fund (FONATUR in its acronym in Spanish) in Huatulco which are recorded at its cost and are not subject to depreciation. See Note 14c.

18.10) Intangible assets

18.10.1) Concessions

The airports that are part of the Company performed the analysis of the criteria that must be taken into account to know if they are within the scope of IFRIC 12:

a. The grantor controls or regulates what services the operator must provide with the infrastructure, to whom it must provide them at what price,

· The grantor does not need to have full price control; it is sufficient that the price is regulated by the grantor, the contract or the regulator;

· The grantor can control the price through a limit mechanism;

· The price can vary from fixed price arrangements to those based on a formula up to a maximum price.

b. The grantor controls, through ownership, the right of benefits or otherwise, any significant residual interest in the infrastructure at the end of the term of the agreement.

Taking into consideration the foregoing, these criteria are applicable to each of the concessions that the Company has, which is why their measurement and determination will be considered within the scope of IFRIC 12. In addition, at the end of all the concessions all assets become the property of the nation in which the concession is located.

Within the scope of IFRIC 12, the respective assets can be classified as:

· Financial assets: When the licensor establishes an unconditional right to receive cash flows and other financial assets independently of the use of the public service by the users.

· Intangible assets: Only when the licensor agreements do not establish a contractual right to receive cash flows and other financial assets from the licensor, independently of the use of the public service by the users. Airport concessions have been considered within the scope of IFRIC 12 as an intangible asset because they comply with the above provisions and no financial assets have been recognized in that regard.

Mexico:

Rights to use airport facilities and airport concessions include the acquisition of the nine airport concessions and the rights acquired from Cancún Air, Dicas and Aeropremier.

Amortization is computed using the straight-line method over the estimated useful life of the concessions, which is 31 years as of December 31, 2017.

Aerostar:

The airport concession right, which includes certain capital expenditures in improvement projects, is recognized as an intangible asset at its cost less accumulated amortization and impairment losses.

Amortization is calculated using the straight-line method during the term of the Agreement (40 years); 36 years as of December 31, 2017.

Airplan:

In the case of Airplan, the right granted by the Concession Contract No.8000011-OK and Public Tender No.10000001OL2010, respectively, is recorded as intangible, through which the grantors assign to the Company the regulated and unregulated income corresponding to each of the airports subject to the concession.

In turn, the costs per loan that are related to the works in execution are part of the intangible.

The intangible asset resulting from the recognition and updating of the estimated income of the contract is amortized based on the proportion of the accumulated income of the contract and the total income. Amortization is recognized in the results of the period.

The useful life for the amortization was determined as the duration of the concession and the amortization rate is calculated based on the percentage of execution of the revenues with respect to the total expected income of the financial model that the Company has. The minimum term of the concession is the year 2015; however, in accordance with the complementary works carried out and the measurement of the expected income against the income generated, the concession will have a useful life until the year 2032.

18.10.2) Licenses and direct commercial operations (ODC, by its initials in Spanish)

These items are recognized at their cost less the accrued amortization and any recognized impairment losses. They are amortized on a straight line basis using their estimated useful life, determined based on the expected future economic benefits, and are subject to testing when indication of impairment is identified.

The estimated useful lives at December 31, 2017 are as follows:

Licenses	31 years
ODC	31 years
Commercial Rights of Aerostar	36 years
Commercial Rights of Airplan	15 years

18.10.3) Goodwill

Goodwill represents the acquisition cost of a subsidiary in excess of the Company's interest in the fair value of the identifiable net assets acquired, determined at the acquisition date, and it is not subject to amortization. Goodwill is shown separately in the consolidated statement of financial position and is recorded at cost less accumulated impairment losses, which are not reversed. Gains and losses on the disposal of an entity include the carrying amount of goodwill relating to the entity sold.

18.10.4) Intangible assets acquired as part of a business combination

When an intangible asset is acquired as part of a business combination, it is recognized at fair value at acquisition date. Subsequently,. intangible assets acquired in a business combination, such as commercial rights, are recognized at cost less the accumulated amortization and the accrued amount of impairment losses. Adjustments related to remeasurement, gain or loss related to an equity accounted investment are presented in non-operating income (loss).

18.11) Impairment of long term non-financial assets

Long term non-financial assets subject to amortization or depreciation are subject to impairment tests when events or circumstances arise that indicate that their book value might not be recovered. Impairment losses correspond to the amounts where the book value of the asset exceeds their recoverable amount. The recoverable amount of assets is the higher of the fair value of the asset less the costs incurred for its sale and value in use. For impairment assessment purposes, assets are grouped at the lowest levels at which they generate identifiable cash flows. Non-financial assets are assessed at every reporting date in order to identify potential reversals of such impairment. At December 31, 2016 and 2017, Management has not identified events or circumstances that indicate that the book value might not be recovered.

18.12) Accounts payable

Accounts payable are liabilities with creditors for purchases of goods or services acquired during the regular course of the Company's operations. When payment is expected over a period of one year or less from the closing date, they are presented under current liabilities. If the foregoing is not complied with, they are presented under non-current liabilities.

Accounts payable are initially recognized at their fair value and are subsequently measured at amortized cost using the effective interest method.

18.13) Bank loans

Loans from financial institutions are initially recognized at their fair value, net of transaction costs. Those funds are subsequently recorded at their amortized cost; any difference between the funds received (net of transaction costs) and the redemption value is recognized in the statement of income during the funding period using the effective interest method.

18.13.1) Refinancing costs

When loan contracts are altered, Management analyzes if the changes are substantial enough for the recognition of a new loan due to the invalidation of the old loan. If the changes are not substantial, the loan can be recorded as a renegotiation of the original loan. Depending on whether the loan should be cancelled and recognized as a new loan or classified as a renegotiation, the transaction costs have different treatments.

The costs incurred in commissions either from the start of an agreement or generated in the refinancing derived from the renegotiation of an indebtedness, are recorded in a prospective way in case the alterations to a loan contract are not deemed an extinction of the original document, but it is determined that they are changes only to the conditions for the agreed flows at the beginning of the negotiation.

18.14) Derecognition of financial liabilities

The Company derecognizes its financial liabilities if, and only if, the obligations of the Company are met, are cancelled or if they expire.

18.15) Provisions

Liability provisions represent a present legal obligation or an assumed obligation as a result of past events, when the use of economic resources is likely in order to settle the obligation and when the amount can be reasonably estimated. Provisions are not recognized for future operating losses.

Provisions are measured at the present value of expenses expected to cover the related obligation, using a pretax rate that reflects the actual considerations of the value of money market over time and the specific risks inherent in the obligation. The increase in the provision over time is recognized as an interest expense.

When there are similar obligations, the likelihood of the outflow of economic resources for settling those obligations is determined considering them as a whole. In these cases, the provision thus estimated is recorded, provided the likelihood of the outflow of cash with respect to a specific item considered as a whole is remote.

18.16) Deferred IT, and tax on dividends

The expense for IT includes both the current tax and deferred taxes. Tax is recognized in the statement of income, except when it relates to items recognized directly in OCI or in stockholders’ equity in which case, the tax is also recognized in OCI items or directly in stockholders’ equity, respectively.

Deferred IT were recorded based on the comprehensive method of liabilities, which consists of recognizing deferred taxes on all temporary differences between the book and tax values of assets and liabilities to be materialized in the future at the enacted or substantially enacted tax rates in effect at the consolidated financial statement date. See Note 14.

Deferred tax assets are only recognized if future tax profits are expected to be incurred against which temporary differences can be offset.

Deferred tax assets and liabilities from the temporary differences arising from the investments in subsidiaries and joint businesses are recognized, except when the Company controls the reversal period for such temporary differences and it is likely that the temporary differences will not be reverted in the near future.

Deferred IT are offset when there is a legal right for each entity to offset current tax assets against current tax liabilities and when deferred IT assets and liabilities relate to the same tax authorities.

The expense for income taxes incurred are computed based on tax laws approved in Mexico at the date of the consolidated statement of financial position.

Current IT is made up of IT, which is recorded under income for the year in which it is incurred. The tax is based on taxable income.

To determine the IT the applicable rate in Mexico for 2017 and 2016 was 30%. The applicable rate for Airplan, according to Colombian legislation for 2017 was 34% and the applicable rate for Aerostar, in accordance with Puerto Rico law for 2017 was 10%.

18.17) Employee benefits

The present value of the defined benefit obligations is determined by discounting the estimated future cash flows using the interest rates of high-quality corporate bonds denominated in the same currency in which the benefits will be paid and that have expiration terms that are approximate the terms of the pension obligation. In those countries where there is no deep market for such bonds, interest rates on government bonds are used.

The net interest cost is calculated by applying the discount rate to the net balance of the defined benefit obligation and the fair value of the plan assets. This cost is included in the expense for employee benefits in the consolidated statement of comprehensive income.

Gains and losses for remeasurements derived from experience adjustments and changes in actuarial assumptions are recognized in the period in which they occur directly in OCI. They are included in the accumulated results in the statement of changes in stockholders' equity and in the consolidated statement of financial position.

Variations in the present value of the defined benefit obligation that result from modifications or reductions of the plan are recognized immediately in results as past service costs.

Termination benefits

Termination benefits are paid when the employment relationship ends before the normal retirement date or when an employee voluntarily accepts the termination in exchange for these benefits. The Group recognizes termination benefits on the first of the following dates: (a) it is committed to terminate the employment relationship of employees in accordance with a detailed formal plan without having the possibility of evading its obligation, and (b) when the entity recognizes restructuring costs in accordance with IAS 37 and involves payment of termination benefits. In the case of an offer that promotes voluntary termination, termination benefits are valued based on the expected number of employees accepting the offer. Benefits that mature 12 months after the reporting date are discounted to their present value. The charge to income for the years ended December 31, 2015, 2016 and 2017 was Ps.1,133 Ps.1,237 and Ps.1,984, respectively. See Note 4.

Short-term obligations

Salaries for wages and salaries, including non-monetary benefits and accumulated sick leave, which are expected to be fully settled within 12 months after the end of the period in which the employees provide the related service, are recognized in connection with the service of employees until the end of the period and are measured by the amounts that are expected to be paid when the liabilities are settled. Liabilities are presented as current obligations for employee benefits in the consolidated statement of financial position.

Share in profits

The Group recognizes a liability and an expense for profit sharing based on a calculation that takes into account the profit attributable to the shareholders of the Company after certain adjustments. The Group recognizes a provision when it is contractually bound or when there is a past practice that generates an implicit obligation.

18.18) Stockholders’ equity

Capital stock, capital reserves and retained earnings are expressed at their historical cost. The capital reserves consist of the legal reserve, the reserve to repurchase own shares, and the reserve to reflect the effect of translating foreign currency.

18.19) Basic and diluted earnings per share

Basic earnings per share were computed by dividing income available to the stockholders by the weighted average number of shares outstanding in 2017 and 2016. The number of shares outstanding for the periods from January 1 to December 31, 2016 and 2017 was 300 million. The basic earnings share for the year ended as of December 31, 2016 and 2017 are expressed in pesos. As of December 31, 2016 and 2017, there were no outstanding dilutive instruments.

18.20) Financial reporting by segments

The segment financial information is presented in a manner that is consistent with the internal reporting provided to the General Directors in charge of making operational decisions, allocating resources and assessing the performance of the operating segments.

The Company determines and evaluates the performance of its airports on an individual basis, after allocating personnel costs and other costs of services, which are incurred by a Company's subsidiary which hires some of the Company's employees. The performance of these services is determined and assessed separately by Management. All the airports provide substantially the same services to their clients. The performance of (Services) is determined and evaluated separately by Management. All airports provide substantially the same services to their customers. Note 2 includes the financial information related to the Company's different segments, which includes Cancún and subsidiaries (Cancún), showing separately due to its importance Aerostar and Airplan, subsidiaries starting on June 1 and October 19, 2017, respectively, the Aeropueto de Villahermosa (Villahermosa), the Aeropuerto de Mérida (Mérida) and Servicios Aeroportuarios del Sureste (Servicios). The financial information of the remaining six airports, of RH Asur, S. A. de C. V. and of the holding Company (including the investment of the Company in its subsidiaries) has been grouped and is included in the “Others” column. The elimination of the investment of the Company in its subsidiaries is included in the “Consolidation Adjustments” column.

Resources are assigned to the segments based on the significance of each one to the Company's operations. Transactions among operating segments are recorded at their fair value.

As of June 1, 2017, Aerostar consolidates its shareholding as a subsidiary in the Company, increasing its shareholding from 50% to 60%, for which the recognition as Join-venture was until May 26, 2017, and for the period from June 1 to December 31, 2017, consolidates Aerostar line by line in the Company's finances.

As of October 19, 2017, Airplan, S. A. consolidates as a subsidiary into the Company.

XML

Costs and expenses by nature: (Details Textual) - MXN ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Mexico [Member]
Costs and expenses by nature line item [Line Items]
Consideration for the concessions	$ 406,733
Airplan [Member]
Costs and expenses by nature line item [Line Items]
Consideration for the concessions		$ 56,005
Aerostar [Member]
Costs and expenses by nature line item [Line Items]
Consideration for the concessions			$ 5,957