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

Return flights

12 May - 03 Jun	ITA Airways
07 May - 21 May	SWISS
05 May - 21 May	SWISS
20 May - 30 May	SWISS
01 May - 16 May	SWISS
01 May - 07 May	SWISS
01 May - 30 May	SWISS
01 May - 23 May	SWISS
01 May - 21 May	SWISS
31 May - 07 Jun	ITA Airways
01 May - 09 May	SWISS
18 May - 27 May	Lufthansa
18 May - 04 Jun	Lufthansa
11 May - 04 Jun	Lufthansa
11 May - 11 Jun	Lufthansa
07 May - 23 Jun	Lufthansa
22 May - 03 Jun	Lufthansa
20 May - 07 Jun	KLM
18 May - 09 Jun	Lufthansa
11 May - 16 Jun	Lufthansa

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 668€

Return flights