Bilbao (BIO) to Chicago (ORD) flight deal in economy from $499
$955 USD
-48%$499 USD
Verified about 14 hours agoSeptember 2026
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Rare Availability
7% of dates checked are available within 10% of the lowest price
Sunday, September 13th, 2026
10 round-trip options
Returning
Fri, Sep 18, 2026•5 Day Trip
$1,273 USD
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Sat, Sep 19, 2026•6 Day Trip
$1,024 USD
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Sun, Sep 20, 2026•7 Day Trip
$919 USD
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Mon, Sep 21, 2026•8 Day Trip
$902 USD
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Tue, Sep 22, 2026•9 Day Trip
$899 USD
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Wed, Sep 23, 2026•10 Day Trip
$1,030 USD
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Thu, Sep 24, 2026•11 Day Trip
$1,274 USD
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Fri, Sep 25, 2026•12 Day Trip
$1,099 USD
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Sat, Sep 26, 2026•13 Day Trip
$1,024 USD
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Sun, Sep 27, 2026•14 Day Trip
$1,024 USD