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

Return flights

04 Nov - 18 Nov	Air China
03 Nov - 12 Nov	Air China
04 Nov - 19 Nov	Air China
16 Nov - 20 Nov	Air China
11 Nov - 20 Nov	Air China
13 Nov - 27 Nov	Air China
11 Nov - 18 Nov	Air China
24 Nov - 02 Dec	Air China
25 Nov - 09 Dec	Air China
20 Nov - 04 Dec	Air China
26 Nov - 09 Dec	Air China
27 Nov - 09 Dec	Air China
27 Nov - 10 Dec	Air China
27 Nov - 11 Dec	Air China
20 Nov - 28 Dec	Air China
30 Nov - 29 Dec	Air China
01 Nov - 30 Nov	Shenzhen Airlines
08 Nov - 22 Nov	Shenzhen Airlines
22 Nov - 28 Nov	Shenzhen Airlines
20 Nov - 06 Dec	Air China

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

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.

Book a cheap hotel in Phnom-penh

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Cheapest return flights from London to Phnom-penh in November from $597

Return flights