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

Return flights

01 Dec - 07 Dec	Wizz Air UK
01 Dec - 23 Dec	Wizz Air UK
08 Dec - 15 Dec	Wizz Air UK
28 Dec - 11 Jan	Wizz Air UK
13 Dec - 20 Dec	Wizz Air
21 Dec - 18 Jan	Wizz Air UK
13 Dec - 27 Dec	Wizz Air
27 Dec - 24 Jan	easyJet
23 Dec - 10 Jan	easyJet
26 Dec - 04 Jan	Wizz Air UK
22 Dec - 10 Jan	easyJet
24 Dec - 10 Jan	easyJet
17 Dec - 04 Jan	Wizz Air UK
27 Dec - 04 Jan	easyJet
20 Dec - 03 Jan	easyJet

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

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Cheapest return flights from London to Phnom-penh in December from 632€

Return flights