Cheap flights from St. Louis to East Sydney

View AU$944 flight on Thu, 25 Sep. 2025Opens in a new window

Popular airlines from St. Louis to East Sydney

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • Delta

    Delta

  • Qantas Airways

    Qantas Airways

  • United

    United

  • Cathay Pacific

    Cathay Pacific

  • All Nippon Airways

    All Nippon Airways

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Cheap Flights from St. Louis (STL) to East Sydney (SYD)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, 11 Aug. - Sun, 17 Aug.
STL
St. Louis
SYD
Sydney
AU$1,710 Return, found 1 day ago
AU$1,710
Return
found 1 day ago
Select Air Canada flight, departing Mon, 11 Aug. from St. Louis to Sydney, returning Sun, 17 Aug., priced at AU$1,710 found 1 day ago
Air Canada
Mon, 11 Aug. - Sun, 17 Aug.
STL
St. Louis
SYD
Sydney
AU$1,718 Return, found 1 day ago
AU$1,718
Return
found 1 day ago
Select Air Canada flight, departing Mon, 11 Aug. from St. Louis to Sydney, returning Sun, 17 Aug., priced at AU$1,718 found 1 day ago
United
Mon, 29 Sep. - Mon, 13 Oct.
STL
St. Louis
SYD
Sydney
AU$1,723 Return, found 1 day ago
AU$1,723
Return
found 1 day ago
Select United flight, departing Mon, 29 Sep. from St. Louis to Sydney, returning Mon, 13 Oct., priced at AU$1,723 found 1 day ago
Delta
Mon, 29 Sep. - Mon, 13 Oct.
STL
St. Louis
SYD
Sydney
AU$1,740 Return, found 1 day ago
AU$1,740
Return
found 1 day ago
Select Delta flight, departing Mon, 29 Sep. from St. Louis to Sydney, returning Mon, 13 Oct., priced at AU$1,740 found 1 day ago
American Airlines
Mon, 1 Sep. - Mon, 15 Sep.
STL
St. Louis
SYD
Sydney
AU$1,750 Return, found 18 hours ago
AU$1,750
Return
found 18 hours ago
Select American Airlines flight, departing Mon, 1 Sep. from St. Louis to Sydney, returning Mon, 15 Sep., priced at AU$1,750 found 18 hours ago
Qantas Airways
Mon, 1 Sep. - Mon, 15 Sep.
STL
St. Louis
SYD
Sydney
AU$1,797 Return, found 18 hours ago
AU$1,797
Return
found 18 hours ago
Select Qantas Airways flight, departing Mon, 1 Sep. from St. Louis to Sydney, returning Mon, 15 Sep., priced at AU$1,797 found 18 hours ago

Find the cheapest month to fly from St. Louis (STL) to Sydney (SYD)

September is typically the cheapest month to fly

From AU$1,726 - AU$3,137 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.