Cheapest return flights from London to Phnom-penh in September from 627€
AirHint found the following cheapest return flights from London (LHR) to Phnom-penh (PNH) in September 2025 (see full year).
Return flights
| 15 Sep - 29 Sep | Air China | ||
| 09 Sep - 23 Sep | Singapore Airlines | ||
| 16 Sep - 16 Oct | Singapore Airlines | ||
| 15 Sep - 03 Oct | Qatar Airways | ||
| 10 Sep - 24 Sep | Singapore Airlines |
Also check the deals for one-way flights from London to Phnom-penh in September.
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.
