Flights from Austin to Billings from $ 329*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Austin (AUS) to Billings (BIL)

Try alternate month or interact with individual days below in order to find offers.
Mar 2026
No result for this month
Apr 2026
From$ 329*
Viewed: 22 hours ago
RoundTrip|Economy
May 2026
From$ 434*
Viewed: 21 hours ago
RoundTrip|Economy
$ 329
Displaying fares for March-2026
  • 26

    Th

    MAR

  • 27

    Fr

  • 28

    Sa

  • 29

    Su

  • 30

    Mo

  • 31

    Tu

  • 01

    We

    APR

  • 02

    Th

  • 03

    Fr

  • 04

    Sa

  • 05

    Su

  • 06

    Mo

  • 07

    Tu

  • 08

    We

  • 09

    Th

  • 10

    Fr

  • 11

    Sa

  • 12

    Su

  • 13

    Mo

  • 14

    Tu

  • 15

    We

  • 16

    Th

  • 17

    Fr

  • 18

    Sa

  • 19

    Su

  • 20

    Mo

  • 21

    Tu

  • 22

    We

  • 23

    Th

  • 24

    Fr

  • 25

    Sa

    • Range$ 329-$ 439

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    More United deals on Austin (AUS) to Billings (BIL) flights

    $
    keyboard_arrow_down
    More United deals on Austin (AUS) to Billings (BIL) flights
    From
    To
    Fare Type
    Dates
    Price
    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		04/17/26 - 04/20/26

    from

    $ 329

    Viewed: 22 hours ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		06/23/26 - 06/30/26

    from

    $ 334

    Viewed: 1 day ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		06/19/26 - 06/22/26

    from

    $ 348

    Viewed: 23 hours ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		04/16/26 - 04/19/26

    from

    $ 382

    Viewed: 22 hours ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		04/16/26 - 04/20/26

    from

    $ 382

    Viewed: 22 hours ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		08/25/26 - 09/01/26

    from

    $ 401

    Viewed: 15 hours ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		06/22/26 - 06/29/26

    from

    $ 427

    Viewed: 1 day ago

    Austin (AUS)Billings (BIL)Roundtrip
    |
    Economy    		10/30/26 - 11/06/26

    from

    $ 430

    Viewed: 1 day ago

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    Explore United Airlines's Top-Pick Destinations

    Explore more United flights