Bilbao (BIO) to Chicago (ORD) flight deal in economy from $399
$903 USD
-56%$399 USD
Verified 15 days agoAugust 2026
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Limited Availability
10% 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
$1,541 USD
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Sat, Aug 22, 2026•6 Day Trip
$1,393 USD
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Sun, Aug 23, 2026•7 Day Trip
$1,233 USD
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Mon, Aug 24, 2026•8 Day Trip
$1,216 USD
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Tue, Aug 25, 2026•9 Day Trip
$1,216 USD
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Sat, Aug 29, 2026•13 Day Trip
$1,285 USD
Returning
Sun, Aug 30, 2026•14 Day Trip
$1,233 USD