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

Return flights

29 Jan - 02 Feb	Alaska Airlines
13 Jan - 23 Jan	Alaska Airlines
30 Jan - 20 Feb	Alaska Airlines
25 Jan - 01 Feb	Fiji Airways
28 Jan - 03 Feb	Hawaiian Airlines
26 Jan - 10 Feb	Hawaiian Airlines
29 Jan - 10 Feb	Hawaiian Airlines
20 Jan - 03 Feb	Qantas
11 Jan - 15 Jan	Alaska Airlines
22 Jan - 26 Jan	Hawaiian Airlines
23 Jan - 26 Jan	Frontier Airlines
26 Jan - 10 Feb	United	direct
25 Jan - 01 Feb	United	direct
20 Jan - 03 Feb	United	direct
12 Jan - 23 Jan	Alaska Airlines
17 Jan - 31 Jan	United	direct
14 Jan - 31 Jan	Cathay Pacific
21 Jan - 27 Jan	Air Canada
23 Jan - 26 Jan	United	direct
13 Jan - 30 Jan	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 814€

Return flights