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

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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 May , June 2026

27 May - 09 Jun $ 1,670.00
CHI
Chicago
Alaska Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
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27 May - 11 Jun $ 2,126.00
CHI
Chicago
Cathay Pacific
2 STOPS
SYD
Sydney
SYD
Sydney
Cathay Pacific
1 STOPS
CHI
Chicago
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27 May - 06 Jun $ 8,456.00
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

27 May - 01 Jun $ 1,608.00
CHI
Chicago
Frontier Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Frontier Airlines
3 STOPS
CHI
Chicago
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27 May - 01 Jun $ 1,644.00
CHI
Chicago
Alaska Airlines
2 STOPS
SYD
Sydney
SYD
Sydney
Alaska Airlines
2 STOPS
CHI
Chicago
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24 May - 31 May $ 2,239.00
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

8:46 PM - 11:50 AM
Alaska Airlines
2 Stops
31h 4m
CHI - SYD
$ 814
Kiwi
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2:10 PM - 11:50 AM
Alaska Airlines
2 Stops
37h 40m
CHI - SYD
$ 940
Kiwi
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6:59 PM - 11:05 PM
Qantas
1 Stops
21h 6m
CHI - SYD
$ 1,104
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.