Bilbao (BIO) to San Francisco (SFO) flight deal in economy from $505
$802 USD
-37%$505 USD
Verified 13 days agoDecember 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
11% of dates checked are available within 10% of the lowest price
Sunday, December 20th, 2026
3 round-trip options
Returning
Sat, Dec 26, 2026•6 Day Trip
$1,231 USD
Returning
Tue, Dec 29, 2026•9 Day Trip
$1,300 USD
Returning
Thu, Dec 31, 2026•11 Day Trip
$1,300 USD