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Cheap flights from St Louis (STL) to Sydney (SYD)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Sydney (SYD)

How to find the cheapest flight from St Louis (STL) to Sydney (SYD)
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How to find the cheapest flight from St Louis (STL) to Sydney (SYD)
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How to find the cheapest flight from St Louis (STL) to Sydney (SYD)
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Cheap flights from St Louis to Sydney in December 2025 , January 2026

31 Dec - 09 Jan $ 1,146.00
STL
St Louis
Qantas
1 STOPS
SYD
Sydney
SYD
Sydney
Qantas
2 STOPS
STL
St Louis
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24 Dec - 10 Jan $ 2,503.00
STL
St Louis
Qantas
2 STOPS
SYD
Sydney
SYD
Sydney
Qantas
2 STOPS
STL
St Louis
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20 Dec - 03 Jan $ 6,429.00
STL
St Louis
Qantas
1 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Sydney

24 Dec - 01 Jan $ 2,506.00
STL
St Louis
Hawaiian Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Hawaiian Airlines
2 STOPS
STL
St Louis
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24 Dec - 01 Jan $ 2,506.00
STL
St Louis
Hawaiian Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Hawaiian Airlines
2 STOPS
STL
St Louis
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20 Dec - 31 Dec $ 5,453.00
STL
St Louis
Qantas
1 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
STL
St Louis
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One-way flights to Sydney from St Louis

6:20 AM - 12:15 PM
Qantas
2 Stops
38h 20m
STL - SYD
$ 958
Kiwi
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10:30 AM - 8:25 PM
United Airlines
1 Stops
27h 30m
STL - SYD
$ 1,047
Kiwi
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3:10 PM - 10:55 PM
United Airlines
2 Stops
24h 55m
STL - SYD
$ 1,107
Kiwi
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How to find the cheapest flight from St Louis (STL) to Sydney (SYD)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Sydney (SYD)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.