Cheapest return flights from London to Phnom-penh in January from $645

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 January 2026 (see full year).

Return flights

02 Jan - 18 Jan Air China
14 Jan - 21 Jan Air China
03 Jan - 17 Jan Air China
17 Jan - 24 Jan Air China
07 Jan - 17 Jan Air China
04 Jan - 16 Jan Air China
28 Jan - 14 Feb Singapore Airlines
24 Jan - 08 Feb China Airlines
16 Jan - 04 Feb Air China
07 Jan - 31 Jan Air China
01 Jan - 01 Feb Singapore Airlines
05 Jan - 27 Feb British Airways
09 Jan - 14 Feb Air China
10 Jan - 14 Feb Air China
07 Jan - 26 Feb China Southern

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

Skyscanner

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

Cheap car rent in Phnom-penh