Alaska Airlines Cheap Flights from Ontario to Australia
Deals on one-way flights from Ontario to Australia.*
Ontario (ONT)to
Sydney (SYD)Ontario (ONT)to
Sydney (SYD)Ontario (ONT)to
Sydney (SYD)Ontario (ONT)to
Sydney (SYD)Ontario (ONT)to
Sydney (SYD)*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
One-way low-fare flights Ontario to Australia.*
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Ontario (ONT) | Sydney (SYD) | One-way | Saver | Depart: Jun 26, 2026 | From $634 Seen: 18 hours ago | |
| Ontario (ONT) | Sydney (SYD) | One-way | Saver | Depart: Jun 29, 2026 | From $634 Seen: 18 hours ago | |
| Ontario (ONT) | Sydney (SYD) | One-way | Saver | Depart: Jul 6, 2026 | From $634 Seen: 18 hours ago | |
| Ontario (ONT) | Sydney (SYD) | One-way | Saver | Depart: Jul 8, 2026 | From $634 Seen: 18 hours ago | |
| Ontario (ONT) | Sydney (SYD) | One-way | Saver | Depart: Jul 10, 2026 | From $634 Seen: 18 hours ago | |
| Ontario (ONT) | Sydney (SYD) | One-way | Saver | Depart: Jul 29, 2026 | From $634 Seen: 18 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.