Cheapest one-way flights from San Francisco to Sydney in September from $318

Best time to book flights for San Francisco (SFO) to Sydney (SYD) flights at AirHint

AirHint found the following cheapest one-way flights from San Francisco (SFO) to Sydney (SYD) in September 2025 (see full year).

One-Way flights

02 Sep Alaska Airlines
13 Sep Alaska Airlines
15 Sep Alaska Airlines
22 Sep Hawaiian Airlines
07 Sep Fiji Airways
21 Sep Fiji Airways
24 Sep Fiji Airways
12 Sep Fiji Airways
14 Sep Fiji Airways
29 Sep Fiji Airways

Also check the deals for return flights from San Francisco to Sydney in September.

Skyscanner

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.

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