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

Return flights

10 Dec - 14 Dec	Air China
15 Dec - 16 Dec	Thai AirAsia
06 Dec - 16 Dec	Thai AirAsia
13 Dec - 16 Dec	Thai AirAsia
02 Dec - 16 Dec	Thai AirAsia
02 Dec - 04 Dec	Thai AirAsia
08 Dec - 16 Dec	Thai AirAsia
09 Dec - 16 Dec	Thai AirAsia
07 Dec - 16 Dec	Thai AirAsia
20 Dec - 27 Dec	China Southern
27 Dec - 15 Jan	Thai AirAsia
27 Dec - 17 Jan	Thai AirAsia
31 Dec - 15 Jan	AirAsia Cambodia
31 Dec - 17 Jan	AirAsia Cambodia
28 Dec - 15 Jan	Thai AirAsia
28 Dec - 17 Jan	Thai AirAsia
30 Dec - 15 Jan	AirAsia Cambodia
17 Dec - 05 Jan	Thai AirAsia
16 Dec - 05 Jan	Thai AirAsia
30 Dec - 17 Jan	AirAsia Cambodia

Also check the deals for one-way flights from Phnom-penh to Seoul 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 Phnom-penh to Seoul in December from 293€

Return flights