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 15 hours ago
Fair Availability
33% of dates checked are available within 10% of the lowest price

Thursday, September 10th, 2026

6 round-trip options

Returning
Fri, Sep 18, 2026•8 Day Trip
$739 USD
Google Flights
Returning
Sat, Sep 19, 2026•9 Day Trip
$788 USD
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Returning
Sun, Sep 20, 2026•10 Day Trip
$664 USD
Google Flights
Returning
Tue, Sep 22, 2026•12 Day Trip
$652 USD
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Returning
Wed, Sep 23, 2026•13 Day Trip
$791 USD
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Returning
Thu, Sep 24, 2026•14 Day Trip
$751 USD
Google Flights