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

Return flights

01 Dec - 27 Dec	Asiana Airlines
25 Dec - 11 Jan	Alaska Airlines
28 Dec - 11 Jan	Alaska Airlines
17 Dec - 29 Jan	Zipair
05 Dec - 04 Jan	EVA Air
16 Dec - 31 Dec	EVA Air
14 Dec - 31 Dec	EVA Air
19 Dec - 28 Dec	EVA Air

Also check the deals for one-way flights from Los Angeles to Phnom-penh 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 Los Angeles to Phnom-penh in December from $922

Return flights