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

Saturday, October 31st, 2026

6 round-trip options

Returning
Sun, Nov 8, 2026•8 Day Trip
$634 USD
Google Flights
Returning
Mon, Nov 9, 2026•9 Day Trip
$633 USD
Google Flights
Returning
Tue, Nov 10, 2026•10 Day Trip
$633 USD
Google Flights
Returning
Thu, Nov 12, 2026•12 Day Trip
$633 USD
Google Flights
Returning
Fri, Nov 13, 2026•13 Day Trip
$633 USD
Google Flights
Returning
Sat, Nov 14, 2026•14 Day Trip
$633 USD
Google Flights