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

Return flights

28 Aug - 10 Sep	China Southern
28 Aug - 12 Sep	Wizz Air UK
18 Aug - 07 Sep	Wizz Air UK
19 Aug - 16 Sep	Wizz Air UK
15 Aug - 26 Aug	Wizz Air UK
23 Aug - 06 Sep	Wizz Air UK
23 Aug - 02 Sep	Wizz Air UK
06 Aug - 20 Aug	Wizz Air UK
14 Aug - 05 Sep	Turkish Airlines
29 Aug - 13 Sep	China Southern
14 Aug - 20 Aug	easyJet
12 Aug - 09 Sep	Wizz Air UK
07 Aug - 14 Aug	Turkish Airlines
20 Aug - 06 Sep	Turkish Airlines
04 Aug - 26 Aug	Air India
05 Aug - 19 Aug	Wizz Air UK
05 Aug - 26 Aug	Wizz Air UK
22 Aug - 29 Aug	Wizz Air UK
10 Aug - 13 Aug	easyJet
11 Aug - 21 Aug	easyJet

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.

Book a cheap hotel in Phnom-penh

Cheap car rent in Phnom-penh

Cheapest return flights from London to Phnom-penh in August from 602€

Return flights