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

Return flights

13 May - 21 May	Air India
10 May - 17 May	Gulf Air
20 May - 27 May	Air India
19 May - 26 May	Air India
13 May - 20 May	Air India
18 May - 25 May	Air India
25 May - 01 Jun	Air India
26 May - 02 Jun	Air India
27 May - 03 Jun	Air India
21 May - 28 May	Air India
14 May - 21 May	Air India
14 May - 28 May	Air India
28 May - 04 Jun	Air India
11 May - 01 Jun	Etihad Airways
11 May - 18 May	Etihad Airways
31 May - 07 Jun	Air India
29 May - 05 Jun	Air India
30 May - 06 Jun	Air India
23 May - 07 Jun	Air India
04 May - 01 Jun	Etihad Airways

Also check the deals for one-way flights from Colombo to London 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 Colombo to London in May from $699

Return flights