AirHint found the following cheapest return flights from London (LGW) to Phnom-penh (PNH) in January 2026 (see full year).

Return flights

12 Jan - 25 Jan	SWISS
22 Jan - 01 Feb	SWISS
23 Jan - 05 Feb	SWISS
14 Jan - 11 Feb	SWISS
25 Jan - 02 Feb	SWISS
12 Jan - 23 Feb	SWISS
11 Jan - 25 Jan	SWISS
05 Jan - 01 Feb	SWISS
05 Jan - 02 Feb	SWISS
17 Jan - 24 Jan	Turkish Airlines
21 Jan - 04 Feb	Singapore Airlines
09 Jan - 19 Jan	Turkish Airlines
23 Jan - 07 Feb	Turkish Airlines
25 Jan - 24 Feb	Wizz Air UK
09 Jan - 28 Jan	Vueling Airlines
09 Jan - 27 Jan	China Southern
05 Jan - 21 Jan	easyJet
12 Jan - 30 Jan	Vueling Airlines
20 Jan - 27 Jan	Vueling Airlines
04 Jan - 14 Jan	easyJet

Also check the deals for one-way flights from London to Phnom-penh in January.

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 London to Phnom-penh in January from 621€

Return flights