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

Return flights

09 Apr - 03 May	Air China
08 Apr - 19 Apr	Air China
09 Apr - 21 Apr	Air China
14 Apr - 30 Apr	Singapore Airlines
06 Apr - 23 Apr	Singapore Airlines
13 Apr - 21 Apr	Singapore Airlines
01 Apr - 08 Apr	Air China
05 Apr - 19 Apr	Air China
01 Apr - 30 Apr	Vueling Airlines
09 Apr - 19 Apr	Singapore Airlines
30 Apr - 03 May	Air China
04 Apr - 18 Apr	SWISS
10 Apr - 01 May	Air China

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

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 April from 642€

Return flights