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

Return flights

11 May - 24 May	SWISS
13 May - 27 May	SWISS
01 May - 15 May	SWISS
08 May - 17 May	SWISS
18 May - 01 Jun	Air Dolomiti
02 May - 18 May	SWISS
06 May - 19 May	KLM
01 May - 19 May	SWISS
18 May - 31 May	KLM
01 May - 31 May	Lufthansa
04 May - 11 May	KLM
23 May - 07 Jun	KLM
01 May - 01 Jun	SWISS
27 May - 10 Jun	British Airways
27 May - 23 Jun	SWISS
10 May - 06 Jun	SWISS
25 May - 02 Jun	KLM
25 May - 01 Jun	Air Dolomiti
16 May - 03 Jun	SWISS

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

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 May from $933

Return flights