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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 April , May 2026

27 Apr - 15 May $ 1,367.00
STL
St Louis
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
2 STOPS
STL
St Louis
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27 Apr - 15 May $ 1,371.00
STL
St Louis
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
1 STOPS
STL
St Louis
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27 Apr - 15 May $ 1,376.00
STL
St Louis
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Sydney

27 Apr - 01 May $ 1,611.00
STL
St Louis
Alaska Airlines
3 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
STL
St Louis
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27 Apr - 01 May $ 1,616.00
STL
St Louis
Alaska Airlines
3 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
3 STOPS
STL
St Louis
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27 Apr - 01 May $ 1,652.00
STL
St Louis
Frontier Airlines
3 STOPS
SYD
Sydney
SYD
Sydney
Frontier Airlines
3 STOPS
STL
St Louis
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One-way flights to Sydney from St Louis

7:05 PM - 10:50 PM
United Airlines
1 Stops
20h 50m
STL - SYD
$ 753
Kiwi
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3:15 PM - 10:40 PM
United Airlines
2 Stops
24h 45m
STL - SYD
$ 753
Kiwi
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4:49 PM - 10:40 PM
United Airlines
2 Stops
23h 11m
STL - SYD
$ 755
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.