Flights from Chicago to Porto from USD 799

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Flights from Chicago to Porto

Discover the cheapest day and month to travel

Jun 2026
FromUSD 944*
Viewed 1 day ago
Flight Type Round Trip|Economy
Jul 2026
FromUSD 804*
Viewed 2 hours ago
Flight Type Round Trip|Economy
Aug 2026
Try another month to see offers
cmp-daily-histogram-bars-legend-min-price-aria-label USD 884
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    • RangeUSD 884-USD 1,339

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

    Best Flight Deals from Chicago to Porto

    USD
    keyboard_arrow_down
    Best Flight Deals from Chicago to Porto
    From
    To
    Fare Type
    Dates
    Price
    Chicago (ORD)Porto (OPO)Round trip
    |
    Economy    		29/07/2026 - 05/08/2026

    From

    USD 804

    Viewed 2 hours ago

    Chicago (ORD)Porto (OPO)Round trip
    |
    Economy    		25/09/2026 - 11/10/2026

    From

    USD 874

    Viewed 1 day ago

    Chicago (ORD)Porto (OPO)Round trip
    |
    Economy    		10/04/2027 - 17/04/2027

    From

    USD 799

    Viewed 1 day ago

    Chicago (ORD)Porto (OPO)Round trip
    |
    Economy    		15/11/2026 - 29/11/2026

    From

    USD 809

    Viewed 1 day ago

    Chicago (ORD)Porto (OPO)Round trip
    |
    Economy    		19/09/2026 - 17/10/2026

    From

    USD 874

    Viewed 1 day ago

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

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    Business Flights Deals

    USD

    Chicago (ORD)to

    Porto (OPO)
    02/07/2026 - 22/07/2026

    Round trip

    Business

    From
    USD 4,651
    Viewed 1 day ago

    Chicago (ORD)to

    Porto (OPO)
    29/07/2026 - 05/08/2026

    Round trip

    Business

    From
    USD 5,256
    Viewed 2 hours ago

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

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