Flights from Montreal to Saint Louis from $ 511*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Montreal (YUL) to Saint Louis (STL)

Try alternate month or interact with individual days below in order to find offers.
Apr 2026
No result for this month
May 2026
From$ 511*
Viewed: 13 hours ago
RoundTrip|Economy
Jun 2026
No result for this month
Displaying fares for April-2026
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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 Montreal (YUL) to Saint Louis (STL) flights

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    More United deals on Montreal (YUL) to Saint Louis (STL) flights
    From
    To
    Fare Type
    Dates
    Price
    Montreal (YUL)Saint Louis (STL)Roundtrip
    |
    Economy    		05/23/26 - 05/30/26

    from

    $ 511

    Viewed: 13 hours ago

    Montreal (YUL)Saint Louis (STL)Roundtrip
    |
    Economy    		05/23/26 - 05/30/26

    from

    $ 561

    Viewed: 13 hours ago

    Montreal (YUL)Saint Louis (STL)Roundtrip
    |
    Economy    		07/16/26 - 07/22/26

    from

    $ 574

    Viewed: 1 day ago

    Montreal (YUL)Saint Louis (STL)Roundtrip
    |
    Economy    		07/16/26 - 07/22/26

    from

    $ 623

    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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