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

Sunday, September 20th, 2026

6 round-trip options

Returning
Mon, Sep 28, 2026•8 Day Trip
$897 USD
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Returning
Tue, Sep 29, 2026•9 Day Trip
$897 USD
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Returning
Wed, Sep 30, 2026•10 Day Trip
$914 USD
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Returning
Fri, Oct 2, 2026•12 Day Trip
$914 USD
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Returning
Sat, Oct 3, 2026•13 Day Trip
$908 USD
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Returning
Sun, Oct 4, 2026•14 Day Trip
$908 USD
Google Flights