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

Return flights

06 May - 03 Jun	SWISS
13 May - 10 Jun	SWISS
20 May - 25 Jun	SWISS
06 May - 20 May	Lufthansa
11 May - 20 May	Lufthansa
06 May - 13 May	SWISS
20 May - 02 Jun	SWISS
15 May - 26 May	SWISS
22 May - 06 Jun	KLM
06 May - 21 May	SWISS
04 May - 18 May	Lufthansa
22 May - 25 May	KLM
18 May - 27 May	Lufthansa
15 May - 28 May	SWISS
06 May - 15 May	Lufthansa
18 May - 18 Jun	Lufthansa
28 May - 08 Jun	Lufthansa
25 May - 29 Jun	Lufthansa
01 May - 01 Jun	KLM
25 May - 07 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 769€

Return flights