AirHint found the following cheapest return flights from San Francisco (SFO) to Melbourne (MEL) in December 2025 (see full year).

Return flights

26 Dec - 11 Jan	Fiji Airways
08 Dec - 28 Dec	United
31 Dec - 18 Jan	United	direct
26 Dec - 11 Jan	United	direct
17 Dec - 17 Jan	Zipair
17 Dec - 17 Jan	United	direct
19 Dec - 02 Jan	United
19 Dec - 03 Jan	United

Also check the deals for one-way flights from San Francisco to Melbourne in December.

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 Melbourne in December from $946

Return flights