AirHint found the following cheapest return flights from Chicago (ORD) to Sydney (SYD) in August 2026 (see full year).
Return flights
| 26 Aug - 14 Sep | ANA | ||
| 12 Aug - 03 Sep | ANA | ||
| 26 Aug - 13 Sep | Air Canada |
Also check the deals for one-way flights from Chicago to Sydney in August.
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