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

Return flights

09 Jul - 23 Jul	Turkmenistan Airlines
09 Jul - 16 Jul	Turkmenistan Airlines
07 Jul - 20 Jul	Air India
14 Jul - 13 Aug	Air India
14 Jul - 31 Jul	Air India
12 Jul - 27 Jul	Air India
10 Jul - 17 Jul	Air India
08 Jul - 19 Jul	China Eastern
07 Jul - 04 Aug	Air India
07 Jul - 19 Jul	Air India
22 Jul - 13 Aug	Air India
16 Jul - 15 Aug	Air India
29 Jul - 26 Aug	Air India
26 Jul - 02 Aug	Air India
17 Jul - 03 Aug	Air India
31 Jul - 21 Aug	Air India
21 Jul - 25 Jul	Wizz Air UK
27 Jul - 13 Aug	Wizz Air UK
30 Jul - 06 Aug	Air India
21 Jul - 24 Jul	Air India

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 $960

Return flights