AirHint found the following cheapest one-way flights from Houston (IAH) to Sydney (SYD) in October 2025 (see full year).
One-Way flights
| 25 Oct | Qantas | ||
| 24 Oct | Qantas | ||
| 23 Oct | Qantas | ||
| 25 Oct | United | direct |
Also check the deals for return flights from Houston to Sydney in October.
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