Cheapest return flights from London to Phnom-penh in September from 378€

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

Return flights

26 Sep - 16 Oct China Southern
25 Sep - 16 Oct China Southern
25 Sep - 05 Oct China Southern
26 Sep - 15 Oct China Southern
29 Sep - 16 Oct China Southern
26 Sep - 09 Oct China Southern
29 Sep - 09 Oct China Southern
29 Sep - 12 Oct China Southern
29 Sep - 07 Oct China Southern
29 Sep - 05 Oct China Southern
06 Sep - 19 Sep Shenzhen Airlines
17 Sep - 25 Sep Shenzhen Airlines
14 Sep - 28 Sep Shenzhen Airlines
08 Sep - 21 Sep Shenzhen Airlines
01 Sep - 12 Sep Shenzhen Airlines
15 Sep - 28 Sep Shenzhen Airlines
12 Sep - 27 Sep Shenzhen Airlines
20 Sep - 26 Sep Shenzhen Airlines
12 Sep - 26 Sep Shenzhen Airlines
15 Sep - 25 Sep Shenzhen Airlines

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

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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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