San Francisco (SFO) to Bilbao (BIO) flights from USD716

*Modifying this information may result in a different fare

*All amounts are in USD. Taxes and surcharges are included. No booking fee is applicable. Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional baggage fees may apply.

Why book directly on the KLM website?

Explore the benefits of booking through our website.

No hidden costs icon

No hidden costs

Book with confidence. Our rates hide no unpleasant surprises.

24/7 customer service icon

24/7 customer service

Count on direct, personal support whenever you need it, day or night.

Seamless travel icon

Seamless travel

Enjoy a smooth journey with timely updates and automatic rebooking.

Lowest fares between San Francisco and Bilbao

cmp-daily-histogram-bars-legend-min-price-aria-label USD877
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.3K
Displaying fares for September-2026
  • SFO–BIO, 09/05/2026 – 09/12/2026: From USD1,048
    05

    Sa

    SEP

  • SFO–BIO, 09/06/2026 – 09/20/2026: From USD984
    06

    Su

  • SFO–BIO, 09/07/2026 – 09/28/2026: From USD974
    07

    Mo

  • SFO–BIO, 09/08/2026 – 09/22/2026: From USD924
    08

    Tu

  • SFO–BIO, 09/09/2026 – 09/16/2026: From USD933
    09

    We

  • SFO–BIO, 09/10/2026 – 09/17/2026: From USD988
    10

    Th

  • SFO–BIO, 09/11/2026 – 09/25/2026: From USD984
    11

    Fr

  • SFO–BIO, 09/12/2026 – 09/26/2026: From USD1,048
    12

    Sa

  • SFO–BIO, 09/13/2026 – 10/11/2026: From USD974
    13

    Su

  • SFO–BIO, 09/14/2026 – 09/28/2026: From USD974
    14

    Mo

  • SFO–BIO, 09/15/2026 – 09/22/2026: From USD924
    15

    Tu

  • SFO–BIO, 09/16/2026 – 10/07/2026: From USD928
    16

    We

  • SFO–BIO, 09/17/2026 – 09/24/2026: From USD1,205
    17

    Th

  • SFO–BIO, 09/18/2026 – 09/25/2026: From USD1,295
    18

    Fr

  • SFO–BIO, 09/19/2026 – 09/26/2026: From USD1,008
    19

    Sa

  • SFO–BIO, 09/20/2026 – 10/11/2026: From USD939
    20

    Su

  • SFO–BIO, 09/21/2026 – 09/28/2026: From USD939
    21

    Mo

  • SFO–BIO, 09/22/2026 – 10/13/2026: From USD889
    22

    Tu

  • SFO–BIO, 09/23/2026 – 10/07/2026: From USD898
    23

    We

  • SFO–BIO, 09/24/2026 – 10/22/2026: From USD939
    24

    Th

  • SFO–BIO, 09/25/2026 – 10/23/2026: From USD1,017
    25

    Fr

  • SFO–BIO, 09/26/2026 – 10/10/2026: From USD1,010
    26

    Sa

  • SFO–BIO, 09/27/2026 – 10/11/2026: From USD939
    27

    Su

  • SFO–BIO, 09/28/2026 – 10/05/2026: From USD948
    28

    Mo

  • SFO–BIO, 09/29/2026 – 10/06/2026: From USD889
    29

    Tu

  • SFO–BIO, 09/30/2026 – 10/28/2026: From USD1,059
    30

    We

  • SFO–BIO, 10/01/2026 – 10/22/2026: From USD1,125
    01

    Th

    OCT

  • SFO–BIO, 10/02/2026 – 10/23/2026: From USD1,006
    02

    Fr

  • SFO–BIO, 10/03/2026 – 10/31/2026: From USD891
    03

    Sa

  • SFO–BIO, 10/04/2026 – 11/01/2026: From USD877
    04

    Su

  • RangeUSD877-USD1,295