Flights from Bilbao to San Francisco from $ 1,343*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Bilbao (BIO) to San Francisco (SFO)

Try alternate month or interact with individual days below in order to find offers.
Apr 2026
No result for this month
May 2026
No result for this month
Jun 2026
No result for this month
Displaying fares for April-2026
  • 16

    Th

    APR

  • 17

    Fr

  • 18

    Sa

  • 19

    Su

  • 20

    Mo

  • 21

    Tu

  • 22

    We

  • 23

    Th

  • 24

    Fr

  • 25

    Sa

  • 26

    Su

  • 27

    Mo

  • 28

    Tu

  • 29

    We

  • 30

    Th

  • 01

    Fr

    MAY

  • 02

    Sa

  • 03

    Su

  • 04

    Mo

  • 05

    Tu

  • 06

    We

  • 07

    Th

  • 08

    Fr

  • 09

    Sa

  • 10

    Su

  • 11

    Mo

  • 12

    Tu

  • 13

    We

  • 14

    Th

  • 15

    Fr

    • *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    More United deals on Bilbao (BIO) to San Francisco (SFO) flights

    $
    keyboard_arrow_down
    More United deals on Bilbao (BIO) to San Francisco (SFO) flights
    From
    To
    Fare Type
    Dates
    Price
    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		07/25/26 - 08/15/26

    from

    $ 1,343

    Viewed: 9 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		08/16/26 - 08/22/26

    from

    $ 1,351

    Viewed: 19 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		07/26/26 - 08/15/26

    from

    $ 1,387

    Viewed: 9 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		08/09/26 - 08/29/26

    from

    $ 1,574

    Viewed: 19 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		08/09/26 - 08/29/26

    from

    $ 2,092

    Viewed: 19 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		08/09/26 - 08/29/26

    from

    $ 2,142

    Viewed: 19 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		07/25/26 - 08/15/26

    from

    $ 2,302

    Viewed: 9 hours ago

    Bilbao (BIO)San Francisco (SFO)Roundtrip
    |
    Economy    		07/26/26 - 08/15/26

    from

    $ 2,302

    Viewed: 9 hours ago

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    Explore United Airlines's Top-Pick Destinations

    Explore more United flights