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

Return flights

01 Oct - 28 Nov	Air China
03 Oct - 19 Oct	China Southern
31 Oct - 09 Nov	SKY express
30 Oct - 14 Nov	Wizz Air Malta
07 Oct - 28 Oct	Wizz Air Malta
05 Oct - 23 Oct	Wizz Air UK
18 Oct - 29 Oct	Wizz Air Malta
03 Oct - 11 Oct	Wizz Air UK
04 Oct - 11 Oct	Wizz Air Malta
01 Oct - 18 Oct	China Eastern
01 Oct - 16 Oct	China Eastern
29 Oct - 11 Nov	Wizz Air Malta
03 Oct - 17 Oct	Air China
03 Oct - 24 Oct	Air China
31 Oct - 15 Nov	SKY express
25 Oct - 07 Nov	Wizz Air Malta
31 Oct - 14 Nov	Wizz Air
25 Oct - 03 Nov	Wizz Air Malta
17 Oct - 02 Nov	Wizz Air UK
23 Oct - 07 Nov	China Southern

Also check the deals for one-way 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 return flights from London to Phnom-penh in October from 570€

Return flights