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

Return flights

06 May - 27 May	SWISS
01 May - 25 May	SWISS
21 May - 30 May	SWISS
08 May - 14 May	Lufthansa
01 May - 16 May	Lufthansa
15 May - 30 May	SWISS
22 May - 30 May	SWISS
27 May - 03 Jun	SWISS
01 May - 09 May	Lufthansa
12 May - 23 May	Lufthansa
14 May - 30 May	Lufthansa
25 May - 08 Jun	KLM
20 May - 16 Jun	Lufthansa
23 May - 15 Jun	KLM
22 May - 05 Jun	SWISS
19 May - 14 Jun	Lufthansa
15 May - 07 Jun	KLM
13 May - 05 Jun	Lufthansa
23 May - 02 Jun	KLM
05 May - 04 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 765€

Return flights