Flights from Jacksonville to Saint Louis from $ 642*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Jacksonville (JAX) to Saint Louis (STL)

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Mar 2026
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Apr 2026
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May 2026
From$ 642*
Viewed: 1 day ago
RoundTrip|Economy
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    • *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 Jacksonville (JAX) to Saint Louis (STL) flights

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    More United deals on Jacksonville (JAX) to Saint Louis (STL) flights
    From
    To
    Fare Type
    Dates
    Price
    Jacksonville (JAX)Saint Louis (STL)Roundtrip
    |
    Economy    		05/18/26 - 05/21/26

    from

    $ 642

    Viewed: 1 day ago

    Jacksonville (JAX)Saint Louis (STL)Roundtrip
    |
    Economy    		07/16/26 - 07/19/26

    from

    $ 664

    Viewed: 1 day ago

    Jacksonville (JAX)Saint Louis (STL)Roundtrip
    |
    Economy    		05/15/26 - 05/17/26

    from

    $ 752

    Viewed: 1 day ago

    Jacksonville (JAX)Saint Louis (STL)Roundtrip
    |
    Economy    		05/18/26 - 05/21/26

    from

    $ 913

    Viewed: 1 day ago

    Jacksonville (JAX)Saint Louis (STL)Roundtrip
    |
    Economy    		07/16/26 - 07/19/26

    from

    $ 972

    Viewed: 1 day ago

    Jacksonville (JAX)Saint Louis (STL)Roundtrip
    |
    Economy    		05/15/26 - 05/17/26

    from

    $ 1,023

    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.

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