Porto (OPO) to Chicago (ORD) flight deal in economy from $628

Air CanadaACAir CanadaLufthansaLHLufthansaSwiss International Air LinesLXSwiss International Air LinesAustrian AirlinesOSAustrian AirlinesUnited AirlinesUAUnited Airlines
Round Trip•Economy
PortugalOPO

Francisco Sá Carneiro Airport

Porto, Portugal
United StatesORD

O'Hare International Airport

Chicago, United States
$844 USD
-26%$628 USD
Verified about 14 hours ago
Fair Availability
33% of dates checked are available within 10% of the lowest price

Tuesday, September 15th, 2026

6 round-trip options

Returning
Wed, Sep 23, 2026•8 Day Trip
$904 USD
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Returning
Thu, Sep 24, 2026•9 Day Trip
$904 USD
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Returning
Fri, Sep 25, 2026•10 Day Trip
$894 USD
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Returning
Sun, Sep 27, 2026•12 Day Trip
$682 USD
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Returning
Mon, Sep 28, 2026•13 Day Trip
$652 USD
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Returning
Tue, Sep 29, 2026•14 Day Trip
$678 USD
Google Flights