Exhibit 24

United Continental Holdings, Inc.

Authorization and Designation to Sign and File Section 16 Reporting Forms
and Form 144s

     The undersigned does hereby authorize and designate Jennifer L. Kraft,
Sarah Hagy, Sucheta Misra or Vernicka Shaw (the "Authorized Persons") to
prepare, sign and file on his behalf: (i) any and all Forms 3, 4, 5 and Form ID,
including any amendments thereto, relating to equity securities of United
Continental Holdings, Inc., a Delaware corporation (the "Company") with the
Securities and Exchange Commission (the "SEC") pursuant to the requirements of
Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"),
and the rules promulgated thereunder; and (ii) any and all Forms 144 relating to
equity securities of the Company with the SEC pursuant to Rule 144 under the
Securities Act of 1933, as amended, in each case which may be necessary or
desirable as a result of his ownership of or transaction in securities of the
Company. The undersigned further hereby authorizes and designates the Authorized
Persons to do and perform any and all acts for and on his behalf as may be
necessary or desirable to prepare, sign and file the forms contemplated by this
Authorization. The undersigned hereby confirms any action relating to the
preparation, signing and filing of (i) and (ii) above, performed by the above
mentioned individuals on his behalf and revokes any prior Authorization and
Designation to Sign and File Section 16 Reporting Forms and Forms 144 relating
to equity securities of the Company. This authorization, unless earlier revoked
in writing, shall be valid until the undersigned's reporting obligations under
Section 16 and Rule 144 with respect to securities of the Company shall cease.

IN WITNESS WHEREOF, the undersigned has executed this Authorization and
Designation this 28th day of February, 2017.

                              Signature:     /s/ Andrew P. Nocella
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                              Printed Name:  Andrew P. Nocella
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