American Airlines flights from Chicago to Sydney

Recent searches for flights from Chicago to Sydney

Aug 2026
From$1,608*
Updated: 4 hours ago
Round tripIEconomy
Sep 2026
From$1,608*
Updated: 4 hours ago
Round tripIEconomy
Oct 2026
From$1,605*
Updated: 4 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $1.6K
cmp-daily-histogram-bars-legend-max-price-aria-label $2.7K
Displaying fares for August-2026
  • CHI–SYD: cmp-view-offers-disclaimer. Find Offers
    15

    Sa

    AUG

  • ORD–SYD, 08/16/26 – 08/23/26: From $1,608
    16

    Su

  • ORD–SYD, 08/17/26 – 08/24/26: From $1,608
    17

    Mo

  • CHI–SYD, 08/18/26 – 08/25/26: From $1,608
    18

    Tu

  • ORD–SYD, 08/19/26 – 08/26/26: From $1,608
    19

    We

  • ORD–SYD, 08/20/26 – 08/27/26: From $1,708
    20

    Th

  • CHI–SYD, 08/21/26 – 08/28/26: From $1,708
    21

    Fr

  • ORD–SYD, 08/22/26 – 08/29/26: From $1,708
    22

    Sa

  • ORD–SYD, 08/23/26 – 08/30/26: From $1,608
    23

    Su

  • ORD–SYD, 08/24/26 – 08/31/26: From $2,711
    24

    Mo

  • CHI–SYD, 08/25/26 – 09/01/26: From $1,758
    25

    Tu

  • ORD–SYD, 08/26/26 – 09/02/26: From $1,608
    26

    We

  • ORD–SYD, 08/27/26 – 09/03/26: From $1,708
    27

    Th

  • ORD–SYD, 08/28/26 – 09/04/26: From $1,708
    28

    Fr

  • ORD–SYD, 08/29/26 – 09/05/26: From $1,708
    29

    Sa

  • ORD–SYD, 08/30/26 – 09/06/26: From $1,608
    30

    Su

  • CHI–SYD, 08/31/26 – 09/07/26: From $1,608
    31

    Mo

  • ORD–SYD, 09/01/26 – 09/08/26: From $1,608
    01

    Tu

    SEP

  • ORD–SYD, 09/02/26 – 09/09/26: From $1,608
    02

    We

  • ORD–SYD, 09/03/26 – 09/10/26: From $1,708
    03

    Th

  • CHI–SYD, 09/04/26 – 09/11/26: From $1,708
    04

    Fr

  • ORD–SYD, 09/05/26 – 09/12/26: From $2,561
    05

    Sa

  • CHI–SYD, 09/06/26 – 09/13/26: From $2,461
    06

    Su

  • ORD–SYD, 09/07/26 – 09/14/26: From $2,461
    07

    Mo

  • CHI–SYD, 09/08/26 – 09/15/26: From $1,608
    08

    Tu

  • CHI–SYD, 09/09/26 – 09/16/26: From $1,608
    09

    We

  • CHI–SYD, 09/10/26 – 09/17/26: From $1,708
    10

    Th

  • ORD–SYD, 09/11/26 – 09/18/26: From $1,708
    11

    Fr

  • ORD–SYD, 09/12/26 – 09/19/26: From $1,708
    12

    Sa

  • ORD–SYD, 09/13/26 – 09/20/26: From $1,608
    13

    Su

  • ORD–SYD, 09/14/26 – 09/21/26: From $1,608
    14

    Mo

    • range$1,608-$2,711

    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 Chicago to Sydney flights

    $
    keyboard_arrow_down

    Chicago (ORD)to

    Sydney (SYD)
    10/04/26 - 10/11/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    11/21/26 - 11/28/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    10/14/26 - 10/21/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    11/22/26 - 11/29/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    10/05/26 - 10/12/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 hours ago

    Chicago (ORD)to

    Sydney (SYD)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $1,605Fare subject to changes
    Updated: 4 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 Chicago to Sydney

    Looking for lower fares on your trip from Chicago 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 Chicago to Sydney