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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 July , August 2026

28 Jul - 03 Aug $ 1,162.00
STL
St Louis
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
1 STOPS
STL
St Louis
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29 Jul - 10 Aug $ 1,385.00
STL
St Louis
Qantas
1 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
STL
St Louis
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30 Jul - 05 Aug $ 2,457.00
STL
St Louis
Qantas
2 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Sydney

28 Jul - 01 Aug $ 1,631.00
STL
St Louis
Frontier Airlines
3 STOPS
SYD
Sydney
SYD
Sydney
Frontier Airlines
2 STOPS
STL
St Louis
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29 Jul - 31 Jul $ 2,201.00
STL
St Louis
Air New Zealand
1 STOPS
SYD
Sydney
SYD
Sydney
Air New Zealand
2 STOPS
STL
St Louis
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25 Jul - 31 Jul $ 3,342.00
STL
St Louis
Qantas
2 STOPS
SYD
Sydney
SYD
Sydney
Qantas
1 STOPS
STL
St Louis
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One-way flights to Sydney from St Louis

7:23 PM - 11:00 PM
United Airlines
1 Stops
20h 32m
STL - SYD
$ 635
Kiwi
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4:48 PM - 11:00 PM
United Airlines
2 Stops
23h 7m
STL - SYD
$ 635
Kiwi
Pick dates
7:23 PM - 11:00 PM
United Airlines
1 Stops
20h 32m
STL - SYD
$ 829
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.