OPO to ORD from $628 in economy – flightdeals.net

Home Premium Fare Deals About

Air Canada

Lufthansa

Swiss International Air Lines

LXSwiss International Air Lines

Austrian Airlines

OSAustrian Airlines

United Airlines

UAUnited Airlines

Round Trip•Economy

Francisco Sá Carneiro Airport

Porto, Portugal

O'Hare International Airport

Chicago, United States

$844 USD

-26%$628 USD

Verified about 13 hours ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$628 1$632 2$634 3$651 4$651 5$657 6$651 7$641 8$651 9$634 10$651 11$820 12$891 13$705 14$715 15$659 16$721 17$655 18$641 19$735 20$887 21$822 22$887 23$887 24$916 25$916 26$887 27$892 28$892 29$846 30$828 31$911 1 2 3

Fair Availability

33% of dates checked are available within 10% of the lowest price

Thursday, December 17th, 2026

4 round-trip options

Returning

Tue, Dec 22, 2026•5 Day Trip

$848 USD

Returning

Thu, Dec 24, 2026•7 Day Trip

$722 USD

Returning

Fri, Dec 25, 2026•8 Day Trip

$698 USD

Returning

Sun, Dec 27, 2026•10 Day Trip

$655 USD