Seattle / Tacoma (SEA) to Bilbao (BIO) flight deal in economy from $612
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
BIOBilbao Airport
Bilbao, Spain
$862 USD
-29%$612 USD
Verified about 4 hours agoOctober 2026
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Fair Availability
36% of dates checked are available within 10% of the lowest price
Sunday, October 18th, 2026
10 round-trip options
Returning
Fri, Oct 23, 2026•5 Day Trip
$1,324 USD
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Sat, Oct 24, 2026•6 Day Trip
$1,381 USD
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Sun, Oct 25, 2026•7 Day Trip
$1,330 USD
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Mon, Oct 26, 2026•8 Day Trip
$944 USD
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Tue, Oct 27, 2026•9 Day Trip
$894 USD
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Wed, Oct 28, 2026•10 Day Trip
$764 USD
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Thu, Oct 29, 2026•11 Day Trip
$774 USD
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Fri, Oct 30, 2026•12 Day Trip
$842 USD
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Sat, Oct 31, 2026•13 Day Trip
$662 USD
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Sun, Nov 1, 2026•14 Day Trip
$1,019 USD