AirHint found the following cheapest return flights from London (LON) to Colombo (CMB) in September 2025 (see full year).

Return flights

12 Sep - 02 Oct	Pegasus Airlines
01 Sep - 01 Oct	Wizz Air
01 Sep - 30 Sep	Wizz Air
12 Sep - 06 Oct	Pegasus Airlines
11 Sep - 03 Oct	Wizz Air UK
15 Sep - 30 Sep	Wizz Air
22 Sep - 30 Sep	Wizz Air
01 Sep - 13 Oct	Wizz Air
15 Sep - 29 Sep	Wizz Air
22 Sep - 10 Oct	Wizz Air
22 Sep - 06 Oct	Wizz Air
12 Sep - 22 Sep	Wizz Air UK
15 Sep - 13 Oct	Wizz Air
08 Sep - 25 Sep	Wizz Air
08 Sep - 26 Sep	Wizz Air
15 Sep - 14 Oct	Wizz Air
15 Sep - 10 Oct	Wizz Air
09 Sep - 29 Sep	Wizz Air UK
22 Sep - 29 Sep	Wizz Air Malta
08 Sep - 29 Sep	Wizz Air

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

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 September from 430€

Return flights