Cheapest return flights from San Francisco to Sydney in September from $1162

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

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

Return flights

23 Sep - 30 Sep Delta
23 Sep - 30 Sep American Airlines 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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