AirHint found the following cheapest return flights from London (STN) to Colombo (CMB) in August 2025 (see full year).

Return flights

29 Aug - 29 Sep	Ryanair
29 Aug - 18 Sep	Ryanair
29 Aug - 20 Sep	Ryanair
29 Aug - 24 Sep	Ryanair
29 Aug - 11 Sep	Ryanair
22 Aug - 18 Sep	AJet
22 Aug - 22 Sep	AJet
27 Aug - 30 Sep	Ryanair
23 Aug - 18 Sep	Pegasus Airlines
30 Aug - 30 Sep	Ryanair
01 Aug - 05 Aug	Pegasus Airlines
02 Aug - 05 Aug	Pegasus Airlines
05 Aug - 10 Aug	Ryanair
03 Aug - 07 Aug	Ryanair
07 Aug - 10 Aug	Pegasus Airlines
03 Aug - 10 Aug	Pegasus Airlines
03 Aug - 11 Aug	Ryanair
15 Aug - 19 Aug	Ryanair
13 Aug - 19 Aug	AJet
08 Aug - 15 Aug	Pegasus Airlines

Also check the deals for one-way flights from London to Colombo in August.

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 Colombo in August from 490€

Return flights