Chicago (ORD) to Bilbao (BIO) flight deal in economy from $727
$980 USD
-26%$727 USD
Verified about 22 hours agoDecember 2026
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Good Availability
42% of dates checked are available within 10% of the lowest price
Sunday, December 20th, 2026
10 round-trip options
Returning
Fri, Dec 25, 2026•5 Day Trip
$1,591 USD
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Sat, Dec 26, 2026•6 Day Trip
$1,681 USD
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Sun, Dec 27, 2026•7 Day Trip
$1,767 USD
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Mon, Dec 28, 2026•8 Day Trip
$1,477 USD
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Tue, Dec 29, 2026•9 Day Trip
$1,466 USD
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Wed, Dec 30, 2026•10 Day Trip
$1,632 USD
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Thu, Dec 31, 2026•11 Day Trip
$1,622 USD
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Fri, Jan 1, 2027•12 Day Trip
$1,659 USD
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Sat, Jan 2, 2027•13 Day Trip
$1,923 USD
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Sun, Jan 3, 2027•14 Day Trip
$1,923 USD