AirHint found the following cheapest return flights from San Francisco (SFO) to Sydney (SYD) in January 2026 (see full year).

Return flights

28 Jan - 03 Feb	Hawaiian Airlines
27 Jan - 03 Feb	Hawaiian Airlines
21 Jan - 30 Jan	Alaska Airlines
03 Jan - 12 Jan	Alaska Airlines
16 Jan - 01 Feb	Alaska Airlines
11 Jan - 25 Jan	Alaska Airlines
28 Jan - 02 Feb	Cathay Pacific
05 Jan - 12 Jan	Alaska Airlines
27 Jan - 03 Feb	Qantas	direct
21 Jan - 28 Jan	United	direct
19 Jan - 26 Jan	United	direct
11 Jan - 23 Jan	Cathay Pacific
10 Jan - 17 Jan	Frontier Airlines
08 Jan - 18 Jan	Alaska Airlines
07 Jan - 21 Jan	Alaska Airlines
22 Jan - 12 Feb	United
23 Jan - 13 Feb	United
28 Jan - 20 Feb	Delta
28 Jan - 02 Feb	United	direct

Also check the deals for one-way flights from San Francisco to Sydney in January.

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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Cheapest return flights from San Francisco to Sydney in January from 789€

Return flights