Chicago (ORD) to Bilbao (BIO) flight deal in economy from $735
$969 USD
-24%$735 USD
Verified 1 day agoAugust 2026
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Fair Availability
29% of dates checked are available within 10% of the lowest price
Sunday, August 16th, 2026
3 round-trip options
Returning
Fri, Aug 21, 2026•5 Day Trip
$1,393 USD
Returning
Sat, Aug 22, 2026•6 Day Trip
$1,008 USD
Returning
Sun, Aug 23, 2026•7 Day Trip
$997 USD