Flights from Houston to Porto from $ 898*

Promotion Code

Featured daily fares for flights from Houston (IAH) to Porto (OPO)

$ 924
$ 4.2K
Displaying fares for April-2026
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  • Range$ 924-$ 4,241

    More United deals on Houston (IAH) to Porto (OPO) flights

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    More United deals on Houston (IAH) to Porto (OPO) flights
    From
    To
    Fare Type
    Dates
    Price
    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    08/14/26 - 09/02/26

    from

    $ 898

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    04/28/26 - 05/05/26

    from

    $ 924

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    04/26/26 - 05/03/26

    from

    $ 927

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    05/05/26 - 05/12/26

    from

    $ 928

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    04/20/26 - 04/27/26

    from

    $ 942

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    04/27/26 - 05/04/26

    from

    $ 942

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    04/20/26 - 05/04/26

    from

    $ 942

    Viewed: 7 hours ago

    Houston (IAH)Porto (OPO)Roundtrip
    |
    Economy
    05/05/26 - 05/19/26

    from

    $ 946

    Viewed: 7 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.