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

One-Way flights

22 Oct	Tianjin Airlines
29 Oct	Shenzhen Airlines
03 Oct	Shenzhen Airlines
30 Oct	Vueling Airlines
06 Oct	Vueling Airlines
27 Oct	Etihad Airways
26 Oct	Etihad Airways
12 Oct	Etihad Airways
28 Oct	Lufthansa
11 Oct	Etihad Airways

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

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 one-way flights from London to Phnom-penh in October from 361€

One-Way flights