AirHint found the following cheapest one-way flights from London (LHR) to Phnom-penh (PNH) in September 2025 (see full year).
22 Sep | Air China | ||
15 Sep | Air China |
Also check the deals for return flights from London to Phnom-penh in September.
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.