Flights from Bismarck to Seattle from $ 442*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Bismarck (BIS) 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$ 763*
Viewed: 22 hours ago
RoundTrip|Economy
May 2026
From$ 442*
Viewed: 23 hours ago
RoundTrip|Economy
$ 763
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    • Range$ 763

    *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 Bismarck (BIS) to Seattle (SEA) flights

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    More United deals on Bismarck (BIS) to Seattle (SEA) flights
    From
    To
    Fare Type
    Dates
    Price
    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		05/22/26 - 05/24/26

    from

    $ 442

    Viewed: 23 hours ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		06/08/26 - 06/12/26

    from

    $ 707

    Viewed: 1 day ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		04/13/26 - 04/15/26

    from

    $ 763

    Viewed: 22 hours ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		04/20/26 - 04/24/26

    from

    $ 842

    Viewed: 22 hours ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		06/08/26 - 06/12/26

    from

    $ 848

    Viewed: 1 day ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		05/22/26 - 05/24/26

    from

    $ 855

    Viewed: 23 hours ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		05/29/26 - 06/06/26

    from

    $ 578

    Viewed: 4 hours ago

    Bismarck (BIS)Seattle (SEA)Roundtrip
    |
    Economy    		06/03/26 - 06/08/26

    from

    $ 737

    Viewed: 46 minutes 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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