Chicago (ORD) to Bilbao (BIO) flight deal in economy from $735
$940 USD
-22%$735 USD
Verified about 16 hours agoAugust 2026
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Fair Availability
29% of dates checked are available within 10% of the lowest price
Tuesday, August 25th, 2026
7 round-trip options
Returning
Sun, Aug 30, 2026•5 Day Trip
$1,027 USD
Returning
Tue, Sep 1, 2026•7 Day Trip
$967 USD
Returning
Wed, Sep 2, 2026•8 Day Trip
$967 USD
Returning
Fri, Sep 4, 2026•10 Day Trip
$967 USD
Returning
Sat, Sep 5, 2026•11 Day Trip
$982 USD
Returning
Sun, Sep 6, 2026•12 Day Trip
$982 USD
Returning
Tue, Sep 8, 2026•14 Day Trip
$932 USD