Earn point on your loyalty program!arrow arc left

Cheap flights from Chicago (CHI) to Bilbao (BIO)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)

How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Chicago to Bilbao in July , August 2026

28 Jul - 06 Aug $ 1,039.00
CHI
Chicago
United Airlines
1 STOPS
BIO
Bilbao
BIO
Bilbao
United Airlines
1 STOPS
CHI
Chicago
Pick dates
29 Jul - 10 Aug $ 1,890.00
CHI
Chicago
Iberia Airlines
1 STOPS
BIO
Bilbao
BIO
Bilbao
Iberia Airlines
1 STOPS
CHI
Chicago
Pick dates
30 Jul - 03 Aug $ 2,114.00
CHI
Chicago
Air France
1 STOPS
BIO
Bilbao
BIO
Bilbao
Air France
1 STOPS
CHI
Chicago
Pick dates

Last minute flights from Chicago to Bilbao

28 Jul - 01 Aug $ 1,375.00
CHI
Chicago
Icelandair
2 STOPS
BIO
Bilbao
BIO
Bilbao
Icelandair
2 STOPS
CHI
Chicago
Pick dates
29 Jul - 31 Jul $ 2,050.00
CHI
Chicago
Lufthansa
1 STOPS
BIO
Bilbao
BIO
Bilbao
Lufthansa
1 STOPS
CHI
Chicago
Pick dates
29 Jul - 31 Jul $ 2,837.00
CHI
Chicago
KLM Royal Dutch Airlines
1 STOPS
BIO
Bilbao
BIO
Bilbao
KLM Royal Dutch Airlines
1 STOPS
CHI
Chicago
Pick dates

One-way flights to Bilbao from Chicago

4:40 PM - 8:55 AM
TAP Portugal
1 Stops
11h 50m
CHI - BIO
$ 567
Kiwi
Pick dates
4:45 PM - 8:55 AM
TAP Portugal
1 Stops
11h 45m
CHI - BIO
$ 587
Kiwi
Pick dates
4:31 PM - 9:15 PM
United Airlines
1 Stops
11h 14m
CHI - BIO
$ 690
Kiwi
Pick dates

How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Bilbao (BIO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.