Bilbao (BIO) to San Francisco (SFO) flight deal in economy from $505
$802 USD
-37%$505 USD
Verified 13 days agoDecember 2026
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Limited Availability
11% of dates checked are available within 10% of the lowest price
Monday, December 21st, 2026
3 round-trip options
Returning
Sun, Dec 27, 2026•6 Day Trip
$1,003 USD
Returning
Wed, Dec 30, 2026•9 Day Trip
$1,071 USD
Returning
Fri, Jan 1, 2027•11 Day Trip
$1,094 USD