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

Return flights

28 Jan - 04 Feb	Air China
21 Jan - 31 Jan	Air China
11 Jan - 22 Jan	Air China
06 Jan - 31 Jan	Air China
05 Jan - 02 Feb	Air China
06 Jan - 02 Feb	Air China
15 Jan - 30 Jan	Air China
28 Jan - 16 Feb	Etihad Airways
26 Jan - 16 Feb	Etihad Airways
31 Jan - 28 Feb	Air China
22 Jan - 12 Feb	Air China
08 Jan - 15 Jan	Etihad Airways
07 Jan - 14 Jan	Wizz Air UK
06 Jan - 20 Jan	Air China
10 Jan - 17 Jan	Etihad Airways
27 Jan - 15 Feb	Wizz Air UK
28 Jan - 15 Feb	Singapore Airlines
24 Jan - 14 Feb	Etihad Airways
02 Jan - 09 Jan	Wizz Air UK

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 521€

Return flights