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

Return flights

25 Jun - 07 Jul	Emirates
26 Jun - 07 Jul	China Southern
25 Jun - 04 Jul	China Southern
23 Jun - 03 Jul	Shenzhen Airlines
28 Jun - 08 Jul	China Southern
25 Jun - 09 Jul	China Southern
23 Jun - 04 Jul	Air China
19 Jun - 26 Jun	China Southern
19 Jun - 30 Jun	China Southern
18 Jun - 25 Jun	China Southern
17 Jun - 08 Jul	Malaysia Airlines
19 Jun - 03 Jul	China Southern
23 Jun - 08 Jul	Air India
17 Jun - 29 Jun	Air India
21 Jun - 28 Jun	Oman Air

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

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 June from $664

Return flights