AirHint found the following cheapest return flights from Beijing (PEK) to Phnom-penh (PNH) in August 2025 (see full year).

Return flights

11 Aug - 18 Aug	Vietnam Airlines
15 Aug - 05 Sep	Cathay Pacific
17 Aug - 07 Sep	Cathay Pacific
07 Aug - 14 Aug	Cathay Pacific
08 Aug - 15 Aug	Cathay Pacific
10 Aug - 17 Aug	Cathay Pacific
13 Aug - 20 Aug	Cathay Pacific
10 Aug - 17 Aug	Air China	direct
17 Aug - 07 Sep	Air China	direct

Also check the deals for one-way flights from Beijing to Phnom-penh in August.

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 Beijing to Phnom-penh in August from 238€

Return flights