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

Return flights

27 Jan - 27 Feb	Air China
14 Jan - 28 Jan	Air China
12 Jan - 24 Jan	Air China
15 Jan - 22 Jan	Air China
20 Jan - 03 Feb	Air China
08 Jan - 22 Jan	Air China
08 Jan - 24 Jan	Air China
11 Jan - 04 Feb	Air China
25 Jan - 10 Feb	Air China
21 Jan - 07 Feb	Air China
22 Jan - 09 Feb	Air China
23 Jan - 10 Feb	Air China
05 Jan - 03 Feb	Air China
05 Jan - 25 Jan	Air China
08 Jan - 18 Jan	China Southern
01 Jan - 31 Jan	China Southern
01 Jan - 30 Jan	China Southern
02 Jan - 01 Feb	China Southern
22 Jan - 19 Feb	China Southern
09 Jan - 31 Jan	China Southern

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 550€

Return flights