Cheapest return flights from Chicago to Sydney in August from $1093

AirHint found the following cheapest return flights from Chicago (ORD) to Sydney (SYD) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep Spirit Airlines
08 Aug - 10 Aug Spirit Airlines
06 Aug - 13 Aug Spirit Airlines
25 Aug - 02 Sep Spirit Airlines
25 Aug - 07 Sep Air India
26 Aug - 02 Sep Hawaiian Airlines
25 Aug - 26 Sep Spirit Airlines
27 Aug - 02 Sep ANA
19 Aug - 26 Aug Fiji Airways
02 Aug - 01 Sep Spirit Airlines

Also check the deals for one-way flights from Chicago to Sydney in August.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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