Chicago (ORD) to Bilbao (BIO) flight deal in economy from $735
$969 USD
-24%$735 USD
Verified 1 day agoNovember 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Fair Availability
29% of dates checked are available within 10% of the lowest price
Friday, November 20th, 2026
2 round-trip options
Returning
Wed, Nov 25, 2026•5 Day Trip
$819 USD
Returning
Mon, Nov 30, 2026•10 Day Trip
$871 USD