Exhibit 99.4

ITEM 9A. CONTROLS AND PROCEDURES

Explanatory Note: The following discloses the conclusions of UAL’s and United’s principal executive and financial officers regarding the effectiveness of UAL’s and United’s disclosure controls and procedures as of December 31, 2012 and discloses the management report of UAL’s and United’s internal control over financial reporting for the three months ended December 31, 2012.

UAL and United each maintain controls and procedures that are designed to ensure that information required to be disclosed in the reports filed or submitted by UAL and United to the Securities and Exchange Commission (“SEC”) is recorded, processed, summarized and reported, within the time periods specified by the SEC’s rules and forms, and is accumulated and communicated to management including the Chief Executive Officer and Chief Financial Officer as appropriate to allow timely decisions regarding required disclosure. The management of UAL and United, including the Chief Executive Officer and Chief Financial Officer, performed an evaluation to conclude with reasonable assurance that UAL’s and United’s disclosure controls and procedures were designed and operating effectively to report the information each company is required to disclose in the reports they file with the SEC on a timely basis. Based on that evaluation, the Chief Executive Officer and the Chief Financial Officer of UAL and United have concluded that as of December 31, 2012, disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting during the Quarter Ended December 31, 2012

During the three months ended December 31, 2012, there was no change in UAL’s or United’s internal control over financial reporting during their most recent fiscal quarter that materially affected, or is reasonably likely to materially affect, their internal control over financial reporting.

1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of

United Continental Holdings, Inc.

We have audited United Continental Holdings, Inc.’s (the “Company”) internal control over financial reporting as of December 31, 2012, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management Report on Internal Control Over Financial Reporting in Item 9A. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements as of and for the year ended December 31, 2012 of the Company and our report dated February 25, 2013 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Chicago, Illinois

February 25, 2013

2

United Continental Holdings, Inc. Management Report on Internal Control Over Financial Reporting

February 25, 2013

To the Stockholders of United Continental Holdings, Inc.

Chicago, Illinois

The management of United Continental Holdings, Inc. (“UAL”) is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f). Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the design and operating effectiveness of our internal control over financial reporting as of December 31, 2012. In making this assessment, management used the framework set forth in Internal Control—Integrated Framework issued by the Committee of the Sponsoring Organizations of the Treadway Commission. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our internal controls over financial reporting were effective as of December 31, 2012.

Our independent registered public accounting firm, Ernst & Young LLP, who audited UAL’s consolidated financial statements included in UAL’s Annual Report on Form 10-K for the year ended December 31, 2012, has issued a report on UAL’s internal control over financial reporting, which is included herein.

United Airlines, Inc. Management Report on Internal Control Over Financial Reporting

April 25, 2013

To the Stockholder of United Airlines, Inc.

Chicago, Illinois

The management of United Airlines, Inc. (“United”) is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f). United’s internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Because of its inherent limitations, our internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of management, including United’s Chief Executive Officer and Chief Financial Officer, United conducted an evaluation of the design and operating effectiveness of our internal control over financial reporting as of December 31, 2012. In making this assessment, management used the framework set forth in Internal Control—Integrated Framework issued by the Committee of the Sponsoring Organizations of the Treadway Commission. Based on this evaluation, United’s Chief Executive Officer and Chief Financial Officer concluded that its internal controls over financial reporting were effective as of December 31, 2012.

This Current Report on Form 8-K does not include an attestation report of United’s registered public accounting firm regarding internal control over financial reporting. Management’s report was not subject to attestation by United’s registered public accounting firm pursuant to the rules of the Securities and Exchange Commission that permit United to provide only management’s report in its Annual Report on Form 10-K for the year ended December 31, 2012.

3