Cheapest return flights from San Francisco to Sydney in September from $898

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

Return flights

23 Sep - 01 Oct Philippine Airlines
08 Sep - 15 Sep Philippine Airlines
04 Sep - 18 Sep Philippine Airlines
04 Sep - 17 Sep Philippine Airlines
21 Sep - 12 Oct Philippine Airlines
17 Sep - 06 Oct Philippine Airlines
12 Sep - 15 Sep Philippine Airlines
27 Sep - 19 Oct Philippine Airlines
09 Sep - 23 Sep Air Canada
07 Sep - 23 Sep Air Canada
14 Sep - 23 Sep Air Canada
10 Sep - 24 Sep Fiji Airways
07 Sep - 10 Sep Fiji Airways
07 Sep - 14 Sep Fiji Airways
25 Sep - 12 Oct Alaska Airlines
28 Sep - 19 Oct Korean Air
21 Sep - 12 Oct Qantas direct
28 Sep - 19 Oct United direct
25 Sep - 12 Oct United direct
27 Sep - 19 Oct United direct

Also check the deals for one-way 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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