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

Return flights

03 Jul - 09 Jul	China Eastern
07 Jul - 09 Jul	China Eastern
09 Jul - 18 Jul	Air China
07 Jul - 31 Jul	China Eastern
08 Jul - 15 Jul	China Eastern
05 Jul - 31 Jul	China Eastern
07 Jul - 20 Jul	China Eastern
06 Jul - 13 Jul	China Eastern
07 Jul - 06 Aug	China Eastern
05 Jul - 30 Jul	China Eastern
07 Jul - 14 Jul	China Eastern
05 Jul - 02 Aug	China Eastern
09 Jul - 10 Aug	China Eastern
29 Jul - 01 Aug	Wizz Air UK
15 Jul - 21 Aug	China Southern
28 Jul - 08 Aug	Wizz Air
28 Jul - 11 Aug	KLM
23 Jul - 06 Aug	Ryanair
23 Jul - 09 Aug	Ryanair
15 Jul - 18 Aug	China Southern

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

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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Cheapest return flights from London to Phnom-penh in July from 641€

Return flights