AirHint found the following cheapest one-way flights from Seoul (ICN) to Phnom-penh (PNH) in August 2025 (see full year).

One-Way flights

18 Aug	Philippine Airlines
23 Aug	Philippine Airlines
01 Aug	Philippine Airlines
04 Aug	Philippine Airlines
09 Aug	Philippine Airlines
02 Aug	Philippine Airlines
13 Aug	Philippine Airlines
12 Aug	Philippine Airlines
08 Aug	Philippine Airlines
10 Aug	Xiamen Airlines

Also check the deals for return flights from Seoul 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 one-way flights from Seoul to Phnom-penh in August from 128€

One-Way flights