Bilbao (BIO) to Chicago (ORD) flight deal from $405 USD in economy class

AAAmerican Airlines

AYFinnair

Bilbao Airport

Bilbao, Spain

ORD

O'Hare International Airport

Chicago, United States

$895 USD

-55%$405 USD

Verified Nov 29, 2025 at 11:20 AM

March 2026

Today

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Tue

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Sun

23 24 25 26 27 28 1$422 2$405 3$411 4$411 5$405 6$431 7$476 8$451 9$443 10$434 11$434 12$434 13$489 14$518 15 16 17$463 18 19$463 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5

Good Availability

42% of dates checked are available within 10% of the lowest price

Thursday, March 12th, 2026

6 round-trip options

Returning

Tue, Mar 17, 2026•5 Day Trip

$434 USD

Google Flights

Returning

Wed, Mar 18, 2026•6 Day Trip

$443 USD

Google Flights

Returning

Thu, Mar 19, 2026•7 Day Trip

$509 USD

Google Flights

Returning

Fri, Mar 20, 2026•8 Day Trip

$527 USD

Google Flights

Returning

Sat, Mar 21, 2026•9 Day Trip

$527 USD

Google Flights

Returning

Thu, Mar 26, 2026•14 Day Trip

$782 USD

Google Flights