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

Return flights

16 May - 24 May	Air India
07 May - 09 Jun	Air India
12 May - 22 May	Air India
01 May - 23 May	Air India
01 May - 29 May	Air India
16 May - 24 May	SriLankan Airlines	direct
07 May - 09 Jun	SriLankan Airlines	direct
01 May - 29 May	SriLankan Airlines	direct
12 May - 22 May	SriLankan Airlines	direct
26 May - 30 Jun	Qatar 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 $737

Return flights