Flights from Montreal to Seattle from $ 495*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Montreal (YUL) to Seattle (SEA)

Try alternate month or interact with individual days below in order to find offers.
Mar 2026
No result for this month
Apr 2026
From$ 495*
Viewed: 1 day ago
RoundTrip|Economy
May 2026
From$ 495*
Viewed: 21 hours 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 Montreal (YUL) to Seattle (SEA) flights

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    More United deals on Montreal (YUL) to Seattle (SEA) flights
    From
    To
    Fare Type
    Dates
    Price
    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		04/24/26 - 04/27/26

    from

    $ 495

    Viewed: 1 day ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		04/24/26 - 04/27/26

    from

    $ 569

    Viewed: 1 day ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		04/24/26 - 04/27/26

    from

    $ 754

    Viewed: 1 day ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		05/06/26 - 05/13/26

    from

    $ 495

    Viewed: 21 hours ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		04/27/26 - 05/01/26

    from

    $ 517

    Viewed: 20 hours ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		05/06/26 - 05/13/26

    from

    $ 569

    Viewed: 21 hours ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		04/27/26 - 05/01/26

    from

    $ 569

    Viewed: 20 hours ago

    Montreal (YUL)Seattle (SEA)Roundtrip
    |
    Economy    		06/09/26 - 06/13/26

    from

    $ 621

    Viewed: 16 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.

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