Bilbao (BIO) to San Francisco (SFO) flight deal in economy from $505
$802 USD
-37%$505 USD
Verified 13 days agoOctober 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
11% of dates checked are available within 10% of the lowest price
Saturday, October 17th, 2026
2 round-trip options
Returning
Sun, Oct 25, 2026•8 Day Trip
$1,174 USD
Returning
Sat, Oct 31, 2026•14 Day Trip
$1,066 USD