San Francisco (SFO) to Bilbao (BIO) flight deal in economy from $693
$991 USD
-30%$693 USD
Verified about 3 hours agoDecember 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Thursday, December 31st, 2026
10 round-trip options
Returning
Tue, Jan 5, 2027•5 Day Trip
$1,429 USD
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Wed, Jan 6, 2027•6 Day Trip
$1,277 USD
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Thu, Jan 7, 2027•7 Day Trip
$1,077 USD
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Fri, Jan 8, 2027•8 Day Trip
$1,157 USD
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Sat, Jan 9, 2027•9 Day Trip
$1,159 USD
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Sun, Jan 10, 2027•10 Day Trip
$1,191 USD
Returning
Mon, Jan 11, 2027•11 Day Trip
$892 USD
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Tue, Jan 12, 2027•12 Day Trip
$933 USD
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Wed, Jan 13, 2027•13 Day Trip
$833 USD
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Thu, Jan 14, 2027•14 Day Trip
$825 USD