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

One-Way flights

26 Aug	China Eastern
27 Aug	China Southern
07 Aug	China Southern
18 Aug	China Southern
21 Aug	China Southern
22 Aug	China Southern
05 Aug	China Southern
06 Aug	China Southern
30 Aug	China Southern
28 Aug	China Southern

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 82€

One-Way flights