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
Sunday, August 16th, 2026
7 round-trip options
Returning
Fri, Aug 21, 2026•5 Day Trip
$1,388 USD
Returning
Sun, Aug 23, 2026•7 Day Trip
$992 USD
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Mon, Aug 24, 2026•8 Day Trip
$943 USD
Returning
Wed, Aug 26, 2026•10 Day Trip
$932 USD
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Thu, Aug 27, 2026•11 Day Trip
$932 USD
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Fri, Aug 28, 2026•12 Day Trip
$932 USD
Returning
Sun, Aug 30, 2026•14 Day Trip
$1,017 USD