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

Sunday, September 27th, 2026

6 round-trip options

Returning
Mon, Oct 5, 2026•8 Day Trip
$730 USD
Google Flights
Returning
Tue, Oct 6, 2026•9 Day Trip
$688 USD
Google Flights
Returning
Wed, Oct 7, 2026•10 Day Trip
$786 USD
Google Flights
Returning
Fri, Oct 9, 2026•12 Day Trip
$812 USD
Google Flights
Returning
Sat, Oct 10, 2026•13 Day Trip
$688 USD
Google Flights
Returning
Sun, Oct 11, 2026•14 Day Trip
$725 USD
Google Flights