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

Return flights

14 Mar - 21 Apr	SWISS
19 Mar - 29 Mar	KLM
10 Mar - 24 Mar	KLM
04 Mar - 18 Mar	SWISS
09 Mar - 30 Mar	KLM
10 Mar - 30 Mar	KLM
19 Mar - 30 Mar	KLM
09 Mar - 24 Mar	KLM
05 Mar - 22 Mar	KLM
31 Mar - 13 Apr	KLM
24 Mar - 30 Mar	KLM
05 Mar - 23 Mar	KLM
24 Mar - 01 Apr	KLM
19 Mar - 05 Apr	KLM
24 Mar - 05 Apr	KLM
16 Mar - 06 Apr	KLM
23 Mar - 06 Apr	KLM
19 Mar - 08 Apr	KLM
24 Mar - 06 Apr	KLM
19 Mar - 06 Apr	KLM

Also check the deals for one-way flights from London to Colombo 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 London to Colombo in March from 677€

Return flights