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

Wednesday, September 23rd, 2026

6 round-trip options

Returning
Thu, Oct 1, 2026•8 Day Trip
$682 USD
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Returning
Fri, Oct 2, 2026•9 Day Trip
$707 USD
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Returning
Sat, Oct 3, 2026•10 Day Trip
$655 USD
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Returning
Mon, Oct 5, 2026•12 Day Trip
$655 USD
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Returning
Tue, Oct 6, 2026•13 Day Trip
$641 USD
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Returning
Wed, Oct 7, 2026•14 Day Trip
$666 USD
Google Flights