Flights from Billings to Portland, OR from $ 319*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Billings (BIL) to Portland, OR (PDX)

Try alternate month or interact with individual days below in order to find offers.
Mar 2026
No result for this month
Apr 2026
From$ 694*
Viewed: 19 hours ago
RoundTrip|Economy
May 2026
From$ 319*
Viewed: 13 hours ago
RoundTrip|Economy
$ 694
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    • Range$ 694

    *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 Billings (BIL) to Portland, OR (PDX) flights

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    More United deals on Billings (BIL) to Portland, OR (PDX) flights
    From
    To
    Fare Type
    Dates
    Price
    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		05/27/26 - 06/02/26

    from

    $ 319

    Viewed: 13 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		05/31/26 - 06/06/26

    from

    $ 335

    Viewed: 14 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		09/15/26 - 09/26/26

    from

    $ 357

    Viewed: 17 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		05/31/26 - 06/07/26

    from

    $ 365

    Viewed: 14 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		09/15/26 - 09/29/26

    from

    $ 391

    Viewed: 18 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		05/27/26 - 06/02/26

    from

    $ 503

    Viewed: 13 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		05/31/26 - 06/06/26

    from

    $ 578

    Viewed: 14 hours ago

    Billings (BIL)Portland, OR (PDX)Roundtrip
    |
    Economy    		05/31/26 - 06/07/26

    from

    $ 608

    Viewed: 14 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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