Cheapest one-way flights from London to Phnom-penh in September from $436

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

One-Way flights

17 Sep Shenzhen Airlines
01 Sep Shenzhen Airlines
03 Sep Shenzhen Airlines
10 Sep Shenzhen Airlines
07 Sep Shenzhen Airlines
27 Sep Shenzhen Airlines
08 Sep Shenzhen Airlines
02 Sep China Southern
23 Sep Austrian Airlines
30 Sep Aegean Airlines

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

Skyscanner

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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