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

Wednesday, September 30th, 2026

6 round-trip options

Returning
Thu, Oct 8, 2026•8 Day Trip
$871 USD
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Returning
Fri, Oct 9, 2026•9 Day Trip
$871 USD
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Returning
Sat, Oct 10, 2026•10 Day Trip
$832 USD
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Returning
Mon, Oct 12, 2026•12 Day Trip
$657 USD
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Returning
Tue, Oct 13, 2026•13 Day Trip
$659 USD
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Returning
Wed, Oct 14, 2026•14 Day Trip
$662 USD
Google Flights