Cheapest return flights from London to Phnom-penh in December from $546

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

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

Return flights

04 Dec - 12 Dec Air China
02 Dec - 10 Dec Air China
30 Dec - 20 Jan Air China
02 Dec - 13 Dec Air China
01 Dec - 13 Dec Air China
07 Dec - 14 Dec Singapore Airlines
04 Dec - 08 Jan Thai Airways
05 Dec - 08 Jan Thai Airways
26 Dec - 18 Jan Malaysia Airlines
29 Dec - 12 Jan Singapore Airlines
25 Dec - 09 Jan British Airways
12 Dec - 10 Jan SWISS
28 Dec - 12 Jan Vietnam Airlines
25 Dec - 10 Jan British Airways
24 Dec - 09 Jan Cathay Pacific
18 Dec - 28 Dec EVA Air

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

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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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