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

Return flights

05 May - 14 May	SWISS
05 May - 16 May	SWISS
20 May - 23 May	SWISS
14 May - 21 May	SWISS
14 May - 23 May	SWISS
05 May - 21 May	SWISS
20 May - 30 May	SWISS
01 May - 16 May	SWISS
22 May - 30 May	SWISS
01 May - 23 May	SWISS
25 May - 16 Jun	KLM
07 May - 10 Jun	Lufthansa
07 May - 25 Jun	Lufthansa
19 May - 02 Jun	Lufthansa
20 May - 03 Jun	KLM
04 May - 01 Jun	KLM
06 May - 02 Jun	KLM
21 May - 08 Jun	Lufthansa
09 May - 08 Jun	KLM
19 May - 07 Jun	KLM

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 753€

Return flights