AirHint found the following cheapest return flights from Chicago (ORD) to Sydney (SYD) in March 2026 (see full year).
Return flights
| 15 Mar - 21 Mar | Qantas | ||
| 02 Mar - 15 Mar | Hawaiian Airlines | ||
| 14 Mar - 28 Mar | Turkish Airlines | ||
| 20 Mar - 28 Mar | United |
Also check the deals for one-way flights from Chicago to Sydney in March.
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