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

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Air Canada

Lufthansa

Swiss International Air Lines

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Austrian Airlines

OSAustrian Airlines

United Airlines

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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

Sunday, December 13th, 2026

4 round-trip options

Returning

Fri, Dec 18, 2026•5 Day Trip

$1,100 USD

Returning

Sun, Dec 20, 2026•7 Day Trip

$876 USD

Returning

Mon, Dec 21, 2026•8 Day Trip

$816 USD

Returning

Wed, Dec 23, 2026•10 Day Trip

$705 USD