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

Thursday, September 3rd, 2026

6 round-trip options

Returning
Fri, Sep 11, 2026•8 Day Trip
$887 USD
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Returning
Sat, Sep 12, 2026•9 Day Trip
$887 USD
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Returning
Sun, Sep 13, 2026•10 Day Trip
$887 USD
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Returning
Tue, Sep 15, 2026•12 Day Trip
$682 USD
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Returning
Wed, Sep 16, 2026•13 Day Trip
$676 USD
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Returning
Thu, Sep 17, 2026•14 Day Trip
$809 USD
Google Flights