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

Tuesday, July 28th, 2026

5 round-trip options

Returning
Wed, Aug 5, 2026•8 Day Trip
$1,452 USD
Google Flights
Returning
Thu, Aug 6, 2026•9 Day Trip
$1,564 USD
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Returning
Sun, Aug 9, 2026•12 Day Trip
$1,449 USD
Google Flights
Returning
Mon, Aug 10, 2026•13 Day Trip
$1,441 USD
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Returning
Tue, Aug 11, 2026•14 Day Trip
$1,441 USD
Google Flights