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

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Swiss International Air Lines

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Austrian Airlines

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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 14 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

Monday, December 14th, 2026

4 round-trip options

Returning

Sat, Dec 19, 2026•5 Day Trip

$1,023 USD

Returning

Mon, Dec 21, 2026•7 Day Trip

$820 USD

Returning

Tue, Dec 22, 2026•8 Day Trip

$849 USD

Returning

Thu, Dec 24, 2026•10 Day Trip

$715 USD