Cheapest return flights from Sydney to Phnom-penh in December from $553

Best time to book flights for Sydney (SYD) to Phnom-penh (PNH) flights at AirHint

AirHint found the following cheapest return flights from Sydney (SYD) to Phnom-penh (PNH) in December 2025 (see full year).

Return flights

01 Dec - 31 Dec Singapore Airlines
07 Dec - 20 Dec Vietnam Airlines
20 Dec - 31 Dec Singapore Airlines
18 Dec - 02 Jan Singapore Airlines
18 Dec - 06 Jan AirAsia X
21 Dec - 06 Jan AirAsia X
09 Dec - 15 Jan Vietnam Airlines
16 Dec - 06 Jan AirAsia X
18 Dec - 05 Jan AirAsia X
21 Dec - 05 Jan AirAsia X
16 Dec - 05 Jan AirAsia X
18 Dec - 20 Dec AirAsia X
21 Dec - 02 Jan AirAsia X
13 Dec - 02 Jan AirAsia X
13 Dec - 20 Dec AirAsia X
14 Dec - 20 Dec AirAsia X
16 Dec - 20 Dec AirAsia X
18 Dec - 31 Dec AirAsia X
21 Dec - 31 Dec AirAsia X
13 Dec - 31 Dec AirAsia X

Also check the deals for one-way flights from Sydney to Phnom-penh in December.

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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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