Seattle (SEA) to Madrid (MAD) flights from USD774

*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 Seattle and Madrid

cmp-daily-histogram-bars-legend-min-price-aria-label USD774
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.2K
Displaying fares for October-2026
  • SEA–MAD, 10/04/2026 – 10/11/2026: From USD1,121
    04

    Su

    OCT

  • SEA–MAD, 10/05/2026 – 10/12/2026: From USD1,071
    05

    Mo

  • SEA–MAD, 10/06/2026 – 10/20/2026: From USD1,071
    06

    Tu

  • SEA–MAD, 10/07/2026 – 10/14/2026: From USD1,072
    07

    We

  • SEA–MAD, 10/08/2026 – 10/15/2026: From USD1,122
    08

    Th

  • SEA–MAD, 10/09/2026 – 10/16/2026: From USD1,121
    09

    Fr

  • SEA–MAD, 10/10/2026 – 10/24/2026: From USD1,171
    10

    Sa

  • SEA–MAD, 10/11/2026 – 10/18/2026: From USD1,121
    11

    Su

  • SEA–MAD, 10/12/2026 – 10/19/2026: From USD1,071
    12

    Mo

  • SEA–MAD, 10/13/2026 – 10/20/2026: From USD1,071
    13

    Tu

  • SEA–MAD, 10/14/2026 – 11/11/2026: From USD1,071
    14

    We

  • SEA–MAD, 10/15/2026 – 10/22/2026: From USD1,121
    15

    Th

  • SEA–MAD, 10/16/2026 – 10/19/2026: From USD1,121
    16

    Fr

  • SEA–MAD, 10/17/2026 – 10/24/2026: From USD1,171
    17

    Sa

  • SEA–MAD, 10/18/2026 – 11/08/2026: From USD1,121
    18

    Su

  • SEA–MAD, 10/19/2026 – 11/16/2026: From USD1,071
    19

    Mo

  • SEA–MAD, 10/20/2026 – 11/17/2026: From USD1,071
    20

    Tu

  • SEA–MAD, 10/21/2026 – 11/11/2026: From USD1,072
    21

    We

  • SEA–MAD, 10/22/2026 – 11/19/2026: From USD1,122
    22

    Th

  • SEA–MAD, 10/23/2026 – 11/13/2026: From USD1,122
    23

    Fr

  • SEA–MAD, 10/24/2026 – 11/07/2026: From USD1,171
    24

    Sa

  • SEA–MAD, 10/25/2026 – 11/22/2026: From USD1,121
    25

    Su

  • SEA–MAD, 10/26/2026 – 11/16/2026: From USD1,071
    26

    Mo

  • SEA–MAD, 10/27/2026 – 11/24/2026: From USD1,071
    27

    Tu

  • SEA–MAD, 10/28/2026 – 11/25/2026: From USD1,071
    28

    We

  • SEA–MAD, 10/29/2026 – 11/05/2026: From USD1,121
    29

    Th

  • SEA–MAD, 10/30/2026 – 11/06/2026: From USD954
    30

    Fr

  • SEA–MAD, 10/31/2026 – 11/21/2026: From USD1,000
    31

    Sa

  • SEA–MAD, 11/01/2026 – 11/08/2026: From USD1,092
    01

    Su

    NOV

  • SEA–MAD, 11/02/2026 – 11/23/2026: From USD778
    02

    Mo

  • SEA–MAD, 11/03/2026 – 11/17/2026: From USD774
    03

    Tu

  • RangeUSD774-USD1,171