AirHint found the following cheapest return flights from London (LHR) to Colombo (CMB) in August 2026 (see full year).

Return flights

31 Aug - 13 Sep	Qatar Airways
24 Aug - 07 Sep	SWISS
19 Aug - 16 Sep	Qatar Airways
17 Aug - 03 Sep	Qatar Airways
07 Aug - 21 Aug	KLM
20 Aug - 27 Aug	SWISS
29 Aug - 05 Sep	SWISS
22 Aug - 05 Sep	SWISS
12 Aug - 26 Aug	KLM
12 Aug - 29 Aug	KLM
15 Aug - 02 Sep	KLM
11 Aug - 01 Sep	Brussels Airlines
14 Aug - 11 Sep	KLM
11 Aug - 28 Aug	Brussels Airlines
12 Aug - 02 Sep	KLM
11 Aug - 26 Aug	Brussels Airlines
12 Aug - 28 Aug	Brussels Airlines
06 Aug - 20 Aug	Scandinavian Airlines
25 Aug - 31 Aug	SWISS
12 Aug - 25 Aug	Brussels 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 667€

Return flights