Seattle (SEA) to Basel (BSL) flights from USD728

*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.

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Lowest fares between Seattle and Basel

cmp-daily-histogram-bars-legend-min-price-aria-label USD797
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.2K
Displaying fares for August-2026
  • SEA–BSL, 08/10/2026 – 08/31/2026: From USD979
    10

    Mo

    AUG

  • SEA–BSL, 08/11/2026 – 08/25/2026: From USD915
    11

    Tu

  • SEA–BSL, 08/12/2026 – 09/02/2026: From USD920
    12

    We

  • SEA–BSL, 08/13/2026 – 08/20/2026: From USD965
    13

    Th

  • SEA–BSL, 08/14/2026 – 08/28/2026: From USD970
    14

    Fr

  • SEA–BSL, 08/15/2026 – 09/05/2026: From USD999
    15

    Sa

  • SEA–BSL, 08/16/2026 – 08/30/2026: From USD949
    16

    Su

  • SEA–BSL, 08/17/2026 – 08/31/2026: From USD980
    17

    Mo

  • SEA–BSL, 08/18/2026 – 08/25/2026: From USD889
    18

    Tu

  • SEA–BSL, 08/19/2026 – 09/02/2026: From USD894
    19

    We

  • SEA–BSL, 08/20/2026 – 09/03/2026: From USD939
    20

    Th

  • SEA–BSL, 08/21/2026 – 08/28/2026: From USD944
    21

    Fr

  • SEA–BSL, 08/22/2026 – 09/05/2026: From USD1,138
    22

    Sa

  • SEA–BSL, 08/23/2026 – 08/30/2026: From USD925
    23

    Su

  • SEA–BSL, 08/24/2026 – 08/31/2026: From USD930
    24

    Mo

  • SEA–BSL, 08/25/2026 – 09/15/2026: From USD870
    25

    Tu

  • SEA–BSL, 08/26/2026 – 09/23/2026: From USD870
    26

    We

  • SEA–BSL, 08/27/2026 – 09/10/2026: From USD961
    27

    Th

  • SEA–BSL, 08/28/2026 – 09/25/2026: From USD1,084
    28

    Fr

  • SEA–BSL, 08/29/2026 – 09/12/2026: From USD1,016
    29

    Sa

  • SEA–BSL, 08/30/2026 – 09/06/2026: From USD961
    30

    Su

  • SEA–BSL, 08/31/2026 – 09/28/2026: From USD1,175
    31

    Mo

  • SEA–BSL, 09/01/2026 – 09/29/2026: From USD936
    01

    Tu

    SEP

  • SEA–BSL, 09/02/2026 – 09/30/2026: From USD1,024
    02

    We

  • SEA–BSL, 09/03/2026 – 09/17/2026: From USD1,197
    03

    Th

  • SEA–BSL, 09/04/2026 – 10/02/2026: From USD1,145
    04

    Fr

  • SEA–BSL, 09/05/2026 – 09/19/2026: From USD1,087
    05

    Sa

  • SEA–BSL, 09/06/2026 – 09/27/2026: From USD852
    06

    Su

  • SEA–BSL, 09/07/2026 – 10/05/2026: From USD857
    07

    Mo

  • SEA–BSL, 09/08/2026 – 09/29/2026: From USD797
    08

    Tu

  • SEA–BSL, 09/09/2026 – 09/16/2026: From USD888
    09

    We

  • RangeUSD797-USD1,197