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

Return flights

31 Mar - 30 Apr	Air India
20 Mar - 16 Apr	Air India
07 Mar - 22 Mar	Air India
10 Mar - 17 Mar	Etihad Airways
06 Mar - 27 Mar	Etihad Airways
07 Mar - 22 Mar	SriLankan Airlines	direct
20 Mar - 16 Apr	SriLankan Airlines	direct
10 Mar - 17 Mar	SriLankan Airlines	direct
06 Mar - 27 Mar	SriLankan Airlines	direct

Also check the deals for one-way flights from Colombo to London in March.

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 March from 606€

Return flights