American Airlines flights from Boston to Seattle

Recent searches for flights from Boston to Seattle

Sep 2026
From$450*
Updated: 13 hours ago
Round tripIEconomy
Oct 2026
From$373*
Updated: 13 hours ago
Round tripIEconomy
Nov 2026
From$387*
Updated: 13 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $373
cmp-daily-histogram-bars-legend-max-price-aria-label $955
Displaying fares for September-2026
  • BOS–SEA, 09/16/26 – 09/23/26: From $601
    16

    We

    SEP

  • BOS–SEA, 09/17/26 – 09/24/26: From $955
    17

    Th

  • BOS–SEA, 09/18/26 – 09/25/26: From $665
    18

    Fr

  • BOS–SEA, 09/19/26 – 09/26/26: From $601
    19

    Sa

  • BOS–SEA, 09/20/26 – 09/29/26: From $620
    20

    Su

  • BOS–SEA, 09/21/26 – 09/28/26: From $665
    21

    Mo

  • BOS–SEA, 09/22/26 – 09/29/26: From $564
    22

    Tu

  • BOS–SEA, 09/23/26 – 09/30/26: From $564
    23

    We

  • BOS–SEA, 09/24/26 – 09/29/26: From $602
    24

    Th

  • BOS–SEA, 09/25/26 – 10/02/26: From $582
    25

    Fr

  • BOS–SEA, 09/26/26 – 10/03/26: From $564
    26

    Sa

  • BOS–SEA, 09/27/26 – 10/04/26: From $582
    27

    Su

  • BOS–SEA, 09/28/26 – 10/05/26: From $582
    28

    Mo

  • BOS–SEA, 09/29/26 – 10/06/26: From $450
    29

    Tu

  • BOS–SEA, 09/30/26 – 10/07/26: From $477
    30

    We

  • BOS–SEA, 10/01/26 – 10/08/26: From $782
    01

    Th

    OCT

  • BOS–SEA, 10/02/26 – 10/09/26: From $477
    02

    Fr

  • BOS–SEA, 10/03/26 – 10/10/26: From $450
    03

    Sa

  • BOS–SEA, 10/04/26 – 10/11/26: From $572
    04

    Su

  • BOS–SEA, 10/05/26 – 10/12/26: From $477
    05

    Mo

  • BOS–SEA, 10/06/26 – 10/13/26: From $373
    06

    Tu

  • BOS–SEA, 10/07/26 – 10/14/26: From $373
    07

    We

  • BOS–SEA, 10/08/26 – 10/15/26: From $522
    08

    Th

  • BOS–SEA, 10/09/26 – 10/16/26: From $522
    09

    Fr

  • BOS–SEA, 10/10/26 – 10/17/26: From $400
    10

    Sa

  • BOS–SEA, 10/11/26 – 10/18/26: From $522
    11

    Su

  • BOS–SEA, 10/12/26 – 10/19/26: From $592
    12

    Mo

  • BOS–SEA, 10/13/26 – 10/20/26: From $400
    13

    Tu

  • BOS–SEA: cmp-view-offers-disclaimer. Find Offers
    14

    We

  • BOS–SEA: cmp-view-offers-disclaimer. Find Offers
    15

    Th

    • range$373-$955

    DisclaimerFares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Fares listed may be Basic Economy, which class is subject to additional terms and conditions. Additional baggage fees and charges for optional products and services may apply.

    Find deals on Boston to Seattle flights

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    Boston (BOS)to

    Seattle (SEA)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $373Fare subject to changes
    Updated: 13 hours ago

    Boston (BOS)to

    Seattle (SEA)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $373Fare subject to changes
    Updated: 13 hours ago

    Boston (BOS)to

    Seattle (SEA)
    10/07/26 - 10/14/26

    Round trip

    Economy

    from
    $373Fare subject to changes
    Updated: 13 hours ago

    Boston (BOS)to

    Seattle (SEA)
    10/07/26 - 10/10/26

    Round trip

    Economy

    from
    $373Fare subject to changes
    Updated: 19 hours ago

    Boston (BOS)to

    Seattle (SEA)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $380Fare subject to changes
    Updated: 13 hours ago

    Boston (BOS)to

    Seattle (SEA)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $380Fare subject to changes
    Updated: 13 hours ago

    Boston (BOS)to

    Seattle (SEA)
    11/04/26 - 11/11/26

    Round trip

    Economy

    from
    $387Fare subject to changes
    Updated: 13 hours ago

    Boston (BOS)to

    Seattle (SEA)
    11/11/26 - 11/18/26

    Round trip

    Economy

    from
    $387Fare subject to changes
    Updated: 13 hours ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

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