Flights from Buffalo to Saint Louis from $ 277*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Buffalo (BUF) to Saint Louis (STL)

Apr 2026
From$ 372*
Viewed: 10 hours ago
RoundTrip|Economy
May 2026
From$ 277*
Viewed: 10 hours ago
RoundTrip|Economy
Jun 2026
From$ 277*
Viewed: 10 hours ago
RoundTrip|Economy
$ 287
$ 707
Displaying fares for April-2026
  • 14

    Tu

    APR

  • 15

    We

  • 16

    Th

  • 17

    Fr

  • 18

    Sa

  • 19

    Su

  • 20

    Mo

  • 21

    Tu

  • 22

    We

  • 23

    Th

  • 24

    Fr

  • 25

    Sa

  • 26

    Su

  • 27

    Mo

  • 28

    Tu

  • 29

    We

  • 30

    Th

  • 01

    Fr

    MAY

  • 02

    Sa

  • 03

    Su

  • 04

    Mo

  • 05

    Tu

  • 06

    We

  • 07

    Th

  • 08

    Fr

  • 09

    Sa

  • 10

    Su

  • 11

    Mo

  • 12

    Tu

  • 13

    We

    • Range$ 287-$ 707

    *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 Buffalo (BUF) to Saint Louis (STL) flights

    $
    keyboard_arrow_down
    More United deals on Buffalo (BUF) to Saint Louis (STL) flights
    From
    To
    Fare Type
    Dates
    Price
    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/16/26 - 06/23/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/09/26 - 06/16/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		05/19/26 - 05/26/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/02/26 - 06/09/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/17/26 - 06/24/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/23/26 - 06/30/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/03/26 - 06/10/26

    from

    $ 277

    Viewed: 10 hours ago

    Buffalo (BUF)Saint Louis (STL)Roundtrip
    |
    Economy    		06/10/26 - 06/17/26

    from

    $ 277

    Viewed: 10 hours 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