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

Tuesday, September 29th, 2026

6 round-trip options

Returning
Wed, Oct 7, 2026•8 Day Trip
$887 USD
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Returning
Thu, Oct 8, 2026•9 Day Trip
$818 USD
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Returning
Fri, Oct 9, 2026•10 Day Trip
$887 USD
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Returning
Sun, Oct 11, 2026•12 Day Trip
$655 USD
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Returning
Mon, Oct 12, 2026•13 Day Trip
$652 USD
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Returning
Tue, Oct 13, 2026•14 Day Trip
$655 USD
Google Flights