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Cheap flights from Chicago (CHI) to Sydney (SYD)

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0 Children (2~11)
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How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)

How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
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How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
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How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)
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Cheap flights from Chicago to Sydney in March , April 2026

31 Mar - 25 Apr $ 1,203.00
CHI
Chicago
Frontier Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Frontier Airlines
2 STOPS
CHI
Chicago
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08 Mar - 08 Apr $ 2,145.00
CHI
Chicago
Alaska Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
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11 Mar - 08 Apr $ 3,222.00
CHI
Chicago
Alaska Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
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Last minute flights from Chicago to Sydney

16 Mar - 31 Mar $ 1,464.00
CHI
Chicago
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
2 STOPS
CHI
Chicago
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09 Mar - 31 Mar $ 1,785.00
CHI
Chicago
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
1 STOPS
CHI
Chicago
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04 Mar - 31 Mar $ 1,935.00
CHI
Chicago
United Airlines
1 STOPS
SYD
Sydney
SYD
Sydney
United Airlines
1 STOPS
CHI
Chicago
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One-way flights to Sydney from Chicago

4:41 PM - 9:00 AM
Fiji Airways
2 Stops
28h 9m
CHI - SYD
$ 519
Kiwi
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5:29 PM - 12:00 PM
Hawaiian Airlines
2 Stops
34h 16m
CHI - SYD
$ 951
Kiwi
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4:20 PM - 8:15 PM
United Airlines
1 Stops
21h
CHI - SYD
$ 7,990
Kiwi
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How to find the cheapest flight from Chicago (CHI) to Sydney (SYD)

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