Cheapest return flights from London to Phnom-penh in September from $847

Best time to book flights for London (LGW) to Phnom-penh (PNH) flights at AirHint

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

Return flights

11 Sep - 25 Sep Singapore Airlines
18 Sep - 30 Sep Singapore Airlines
25 Sep - 09 Oct Emirates
19 Sep - 26 Sep Qatar Airways
06 Sep - 20 Sep Emirates
04 Sep - 26 Sep British Airways
11 Sep - 03 Oct British Airways

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

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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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