Flights from Missoula to Porto from $ 772*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Missoula (MSO) to Porto (OPO)

Mar 2026
From$ 844*
Viewed: 8 hours ago
RoundTrip|Economy
Apr 2026
From$ 772*
Viewed: 8 hours ago
RoundTrip|Economy
May 2026
From$ 956*
Viewed: 8 hours ago
RoundTrip|Economy
$ 824
$ 1.6K
Displaying fares for March-2026
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    • Range$ 824-$ 1,614

    *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 Missoula (MSO) to Porto (OPO) flights

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    More United deals on Missoula (MSO) to Porto (OPO) flights
    From
    To
    Fare Type
    Dates
    Price
    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/21/26 - 05/05/26

    from

    $ 772

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/21/26 - 04/28/26

    from

    $ 772

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/28/26 - 05/05/26

    from

    $ 791

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/08/26 - 04/15/26

    from

    $ 824

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/08/26 - 04/22/26

    from

    $ 824

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/25/26 - 05/02/26

    from

    $ 832

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/14/26 - 04/21/26

    from

    $ 836

    Viewed: 8 hours ago

    Missoula (MSO)Porto (OPO)Roundtrip
    |
    Economy    		04/07/26 - 04/14/26

    from

    $ 836

    Viewed: 8 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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