Bilbao (BIO) to Chicago (ORD) flight deal in economy from $499
$955 USD
-48%$499 USD
Verified about 13 hours agoSeptember 2026
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Rare Availability
7% of dates checked are available within 10% of the lowest price
Tuesday, September 22nd, 2026
10 round-trip options
Returning
Sun, Sep 27, 2026•5 Day Trip
$734 USD
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Mon, Sep 28, 2026•6 Day Trip
$983 USD
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Tue, Sep 29, 2026•7 Day Trip
$740 USD
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Wed, Sep 30, 2026•8 Day Trip
$1,160 USD
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Thu, Oct 1, 2026•9 Day Trip
$792 USD
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Fri, Oct 2, 2026•10 Day Trip
$809 USD
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Sat, Oct 3, 2026•11 Day Trip
$734 USD
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Sun, Oct 4, 2026•12 Day Trip
$809 USD
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Mon, Oct 5, 2026•13 Day Trip
$716 USD
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Tue, Oct 6, 2026•14 Day Trip
$716 USD