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

Return flights

22 Aug - 22 Sep	easyJet
19 Aug - 21 Sep	Wizz Air UK
30 Aug - 20 Sep	Wizz Air UK
19 Aug - 06 Sep	Ryanair
21 Aug - 31 Aug	Wizz Air UK
23 Aug - 06 Sep	Ryanair
28 Aug - 01 Sep	Wizz Air UK
24 Aug - 31 Aug	Wizz Air UK
18 Aug - 28 Aug	easyJet
18 Aug - 01 Sep	easyJet
22 Aug - 01 Sep	easyJet
05 Aug - 12 Aug	easyJet
04 Aug - 04 Sep	Wizz Air
19 Aug - 02 Sep	Ryanair
20 Aug - 25 Aug	easyJet
19 Aug - 30 Aug	Ryanair
11 Aug - 30 Aug	easyJet
12 Aug - 19 Aug	Wizz Air UK
11 Aug - 31 Aug	easyJet
04 Aug - 30 Aug	Wizz Air

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

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 August from 737€

Return flights