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

Monday, September 28th, 2026

6 round-trip options

Returning
Tue, Oct 6, 2026•8 Day Trip
$683 USD
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Returning
Wed, Oct 7, 2026•9 Day Trip
$753 USD
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Returning
Thu, Oct 8, 2026•10 Day Trip
$783 USD
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Returning
Sat, Oct 10, 2026•12 Day Trip
$684 USD
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Returning
Sun, Oct 11, 2026•13 Day Trip
$723 USD
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Returning
Mon, Oct 12, 2026•14 Day Trip
$683 USD
Google Flights