Cheapest one-way flights from Chicago to Sydney in October from $313
AirHint found the following cheapest one-way flights from Chicago (ORD) to Sydney (SYD) in October 2025 (see full year).
One-Way flights
| 12 Oct | ANA | ||
| 29 Oct | ANA | ||
| 28 Oct | ANA | ||
| 30 Oct | Qantas | ||
| 31 Oct | Qantas | ||
| 11 Oct | Air Canada | ||
| 13 Oct | ANA | ||
| 08 Oct | United |
Also check the deals for return flights from Chicago to Sydney in October.
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.
