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

Mon

Tue

Wed

Thu

Fri

Sat

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

Monday, March 2nd, 2026

6 round-trip options

Returning

Sat, Mar 7, 2026•5 Day Trip

$1,016 USD

Google Flights

Returning

Sun, Mar 8, 2026•6 Day Trip

$422 USD

Google Flights

Returning

Mon, Mar 9, 2026•7 Day Trip

$405 USD

Google Flights

Returning

Tue, Mar 10, 2026•8 Day Trip

$405 USD

Google Flights

Returning

Wed, Mar 11, 2026•9 Day Trip

$414 USD

Google Flights

Returning

Fri, Mar 13, 2026•11 Day Trip

$635 USD

Google Flights