Cheapest one-way flights from San Francisco to Sydney in September from 611€

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

30 Sep United
30 Sep United direct

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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