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

Return flights

23 Dec - 24 Jan	Air China
30 Dec - 04 Jan	Air China
23 Dec - 27 Dec	Air China
30 Dec - 03 Jan	Air China
21 Dec - 04 Jan	Air China
23 Dec - 04 Jan	Air China
25 Dec - 28 Dec	Air China
26 Dec - 28 Dec	Air China
23 Dec - 28 Dec	Air China
12 Dec - 15 Dec	EVA Air
19 Dec - 25 Dec	EVA Air
20 Dec - 26 Dec	EVA Air
20 Dec - 28 Dec	Air China

Also check the deals for one-way flights from Seoul 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.

Book a cheap hotel in Phnom-penh

Cheap car rent in Phnom-penh

Cheapest return flights from Seoul to Phnom-penh in December from 447€

Return flights