Flights from Harlingen to Seattle from $ 268*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Harlingen (HRL) 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$ 268*
Viewed: 2 hours ago
RoundTrip|Economy
May 2026
No result for this month
$ 268
Displaying fares for March-2026
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    • Range$ 268-$ 339

    *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 Harlingen (HRL) to Seattle (SEA) flights

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    More United deals on Harlingen (HRL) to Seattle (SEA) flights
    From
    To
    Fare Type
    Dates
    Price
    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		04/15/26 - 04/18/26

    from

    $ 268

    Viewed: 2 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		04/14/26 - 04/20/26

    from

    $ 339

    Viewed: 2 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		07/01/26 - 07/10/26

    from

    $ 574

    Viewed: 7 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		07/02/26 - 07/09/26

    from

    $ 600

    Viewed: 7 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		07/01/26 - 07/07/26

    from

    $ 666

    Viewed: 8 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		07/02/26 - 07/07/26

    from

    $ 680

    Viewed: 8 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		09/09/26 - 09/16/26

    from

    $ 349

    Viewed: 20 hours ago

    Harlingen (HRL)Seattle (SEA)Roundtrip
    |
    Economy    		09/24/26 - 10/01/26

    from

    $ 349

    Viewed: 20 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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