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

Return flights

03 Jul - 10 Jul	Emirates
07 Jul - 13 Jul	Emirates
06 Jul - 03 Aug	Emirates
10 Jul - 17 Jul	Emirates
15 Jul - 21 Jul	Ryanair
28 Jul - 04 Aug	Ryanair
10 Jul - 18 Jul	Emirates
25 Jul - 24 Aug	Ryanair
27 Jul - 03 Aug	Ryanair
15 Jul - 12 Aug	Emirates
24 Jul - 22 Aug	Ryanair
13 Jul - 17 Jul	Ryanair
23 Jul - 30 Jul	Ryanair
28 Jul - 06 Aug	Emirates
24 Jul - 23 Aug	Ryanair
17 Jul - 24 Jul	Ryanair
16 Jul - 15 Aug	Emirates
25 Jul - 22 Aug	Ryanair

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 1444CAD

Return flights