Flights from Sun Valley to Porto from $ 932*

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Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Sun Valley (SUN) to Porto (OPO)

Apr 2026
From$ 932*
Viewed: 42 minutes ago
RoundTrip|Economy
May 2026
From$ 1,051*
Viewed: 42 minutes ago
RoundTrip|Economy
Jun 2026
From$ 1,171*
Viewed: 42 minutes ago
RoundTrip|Economy
$ 932
$ 2.1K
Displaying fares for April-2026
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    • Range$ 932-$ 2,062

    *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 Sun Valley (SUN) to Porto (OPO) flights

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    More United deals on Sun Valley (SUN) to Porto (OPO) flights
    From
    To
    Fare Type
    Dates
    Price
    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/26/26 - 05/03/26

    from

    $ 932

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/24/26 - 05/08/26

    from

    $ 943

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/24/26 - 04/28/26

    from

    $ 944

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/27/26 - 05/04/26

    from

    $ 945

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/24/26 - 05/01/26

    from

    $ 952

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/30/26 - 05/07/26

    from

    $ 986

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		04/27/26 - 05/11/26

    from

    $ 1,001

    Viewed: 42 minutes ago

    Sun Valley (SUN)Porto (OPO)Roundtrip
    |
    Economy    		07/14/26 - 07/21/26

    from

    $ 1,029

    Viewed: 42 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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