AirHint found the following cheapest return flights from Chicago (ORD) to Sydney (SYD) in April 2026 (see full year).
Return flights
| 12 Apr - 22 Apr | Hawaiian Airlines | ||
| 01 Apr - 16 Apr | Qantas | ||
| 20 Apr - 10 May | American Airlines | ||
| 01 Apr - 15 May | American Airlines |
Also check the deals for one-way flights from Chicago to Sydney in April.
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