Bilbao (BIO) to Chicago (ORD) flight deal in economy from $399
$903 USD
-56%$399 USD
Verified 16 days agoAugust 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
10% of dates checked are available within 10% of the lowest price
Friday, August 28th, 2026
7 round-trip options
Returning
Wed, Sep 2, 2026•5 Day Trip
$729 USD
Returning
Thu, Sep 3, 2026•6 Day Trip
$724 USD
Returning
Fri, Sep 4, 2026•7 Day Trip
$791 USD
Returning
Sat, Sep 5, 2026•8 Day Trip
$741 USD
Returning
Sun, Sep 6, 2026•9 Day Trip
$546 USD
Returning
Thu, Sep 10, 2026•13 Day Trip
$799 USD
Returning
Fri, Sep 11, 2026•14 Day Trip
$620 USD