Flights from Porto to Chicago from $ 915*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Porto (OPO) to Chicago (ORD)

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Apr 2026
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Displaying fares for April-2026
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    • *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 Porto (OPO) to Chicago (ORD) flights

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    More United deals on Porto (OPO) to Chicago (ORD) flights
    From
    To
    Fare Type
    Dates
    Price
    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		07/27/26 - 09/07/26

    from

    $ 1,138

    Viewed: 1 day ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		07/27/26 - 09/07/26

    from

    $ 1,499

    Viewed: 1 day ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		07/27/26 - 09/07/26

    from

    $ 1,818

    Viewed: 1 day ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		09/01/26 - 09/07/26

    from

    $ 915

    Viewed: 14 hours ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		09/27/26 - 10/16/26

    from

    $ 1,111

    Viewed: 14 hours ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		09/01/26 - 09/07/26

    from

    $ 1,178

    Viewed: 14 hours ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		09/01/26 - 09/07/26

    from

    $ 1,432

    Viewed: 14 hours ago

    Porto (OPO)Chicago (ORD)Roundtrip
    |
    Economy    		09/27/26 - 10/16/26

    from

    $ 1,615

    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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