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

Return flights

05 May - 03 Jun	Air India
13 May - 24 May	Air India
05 May - 11 May	Air India
05 May - 23 May	Air India
07 May - 10 May	Air India
04 May - 31 May	Air India
07 May - 10 May	SriLankan Airlines	direct
13 May - 24 May	SriLankan Airlines	direct
05 May - 11 May	SriLankan Airlines	direct
05 May - 03 Jun	SriLankan Airlines	direct
05 May - 23 May	SriLankan Airlines	direct

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 617€

Return flights