American Airlines flights from Seattle to Sydney

Recent searches for flights from Seattle to Sydney

Aug 2026
From$1,037*
Updated: 11 hours ago
Round tripIEconomy
Sep 2026
From$1,087*
Updated: 11 hours ago
Round tripIEconomy
Oct 2026
From$1,087*
Updated: 11 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $1.0K
cmp-daily-histogram-bars-legend-max-price-aria-label $3.0K
Displaying fares for August-2026
  • SEA–SYD, 08/15/26 – 08/22/26: From $1,137
    15

    Sa

    AUG

  • SEA–SYD, 08/16/26 – 08/23/26: From $1,037
    16

    Su

  • SEA–SYD, 08/17/26 – 08/24/26: From $1,037
    17

    Mo

  • SEA–SYD, 08/18/26 – 08/25/26: From $1,037
    18

    Tu

  • SEA–SYD, 08/19/26 – 08/26/26: From $1,037
    19

    We

  • SEA–SYD, 08/20/26 – 08/27/26: From $1,137
    20

    Th

  • SEA–SYD, 08/21/26 – 08/28/26: From $1,137
    21

    Fr

  • SEA–SYD, 08/22/26 – 08/29/26: From $1,607
    22

    Sa

  • SEA–SYD, 08/23/26 – 08/30/26: From $2,426
    23

    Su

  • SEA–SYD, 08/24/26 – 08/31/26: From $2,896
    24

    Mo

  • SEA–SYD, 08/25/26 – 09/01/26: From $2,128
    25

    Tu

  • SEA–SYD, 08/26/26 – 09/02/26: From $1,978
    26

    We

  • SEA–SYD, 08/27/26 – 09/03/26: From $2,997
    27

    Th

  • SEA–SYD, 08/28/26 – 09/04/26: From $1,758
    28

    Fr

  • SEA–SYD, 08/29/26 – 09/05/26: From $1,607
    29

    Sa

  • SEA–SYD, 08/30/26 – 09/06/26: From $1,507
    30

    Su

  • SEA–SYD, 08/31/26 – 09/07/26: From $1,507
    31

    Mo

  • SEA–SYD, 09/01/26 – 09/08/26: From $1,978
    01

    Tu

    SEP

  • SEA–SYD, 09/02/26 – 09/09/26: From $1,978
    02

    We

  • SEA–SYD, 09/03/26 – 09/10/26: From $2,078
    03

    Th

  • SEA–SYD, 09/04/26 – 09/18/26: From $1,727
    04

    Fr

  • SEA–SYD, 09/05/26 – 09/12/26: From $2,746
    05

    Sa

  • SEA–SYD, 09/06/26 – 09/13/26: From $2,646
    06

    Su

  • SEA–SYD, 09/07/26 – 09/14/26: From $2,646
    07

    Mo

  • SEA–SYD, 09/08/26 – 09/15/26: From $1,978
    08

    Tu

  • SEA–SYD, 09/09/26 – 09/16/26: From $1,978
    09

    We

  • SEA–SYD, 09/10/26 – 09/17/26: From $2,078
    10

    Th

  • SEA–SYD, 09/11/26 – 09/18/26: From $2,078
    11

    Fr

  • SEA–SYD, 09/12/26 – 09/19/26: From $1,187
    12

    Sa

  • SEA–SYD, 09/13/26 – 09/20/26: From $1,087
    13

    Su

  • SEA–SYD, 09/14/26 – 09/21/26: From $1,087
    14

    Mo

    • range$1,037-$2,997

    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 Seattle to Sydney flights

    $
    keyboard_arrow_down

    Seattle (SEA)to

    Sydney (SYD)
    08/17/26 - 08/24/26

    Round trip

    Economy

    from
    $1,037Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    08/16/26 - 08/23/26

    Round trip

    Economy

    from
    $1,037Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    08/19/26 - 08/26/26

    Round trip

    Economy

    from
    $1,037Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    08/18/26 - 08/25/26

    Round trip

    Economy

    from
    $1,037Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    09/22/26 - 09/29/26

    Round trip

    Economy

    from
    $1,087Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    09/27/26 - 10/04/26

    Round trip

    Economy

    from
    $1,087Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    09/28/26 - 10/05/26

    Round trip

    Economy

    from
    $1,087Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    Sydney (SYD)
    09/29/26 - 10/06/26

    Round trip

    Economy

    from
    $1,087Fare subject to changes
    Updated: 11 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.

    Finding cheap flights from Seattle to Sydney

    Looking for lower fares on your trip from Seattle to Sydney? Here are a few ways to save.

    • Book early: Booking 1 to 3 months ahead can help you find lower fares
    • Be flexible with dates: Midweek travel, like Tuesdays and Wednesdays, can be more affordable
    • Travel during less busy periods: Flying outside peak travel times can help find lower fares and avoid crowds

    Earn up to $500 back on your next American Airlines flight plus, 30,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.

    Upgrade your flight with Main Cabin Extra

    Make your trip more comfortable with Main Cabin Extra. Enjoy benefits like:

    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
    • Early boarding: Preferred Group 5 boarding allows easier access to overhead bins.
    • Complimentary drinks: Enjoy beer, wine and spirits on flights with full beverage service.

    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Seattle to Sydney