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

Sunday, September 6th, 2026

6 round-trip options

Returning
Mon, Sep 14, 2026•8 Day Trip
$744 USD
Google Flights
Returning
Tue, Sep 15, 2026•9 Day Trip
$776 USD
Google Flights
Returning
Wed, Sep 16, 2026•10 Day Trip
$786 USD
Google Flights
Returning
Fri, Sep 18, 2026•12 Day Trip
$818 USD
Google Flights
Returning
Sat, Sep 19, 2026•13 Day Trip
$871 USD
Google Flights
Returning
Sun, Sep 20, 2026•14 Day Trip
$788 USD
Google Flights