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

Return flights

10 Sep - 15 Oct	Wizz Air UK
08 Sep - 08 Oct	Wizz Air UK
08 Sep - 30 Sep	Wizz Air
08 Sep - 16 Oct	Wizz Air UK
08 Sep - 06 Oct	Wizz Air UK
15 Sep - 01 Oct	Wizz Air UK
10 Sep - 05 Oct	Wizz Air UK
08 Sep - 05 Oct	Wizz Air UK
08 Sep - 15 Sep	Wizz Air UK
20 Sep - 03 Oct	Wizz Air UK
20 Sep - 18 Oct	Wizz Air UK
25 Sep - 08 Oct	Wizz Air Malta
22 Sep - 30 Sep	Wizz Air Malta
10 Sep - 18 Sep	Wizz Air UK
01 Sep - 24 Sep	Wizz Air UK
01 Sep - 29 Sep	Wizz Air UK
08 Sep - 17 Sep	Wizz Air
23 Sep - 30 Sep	Wizz Air Malta
01 Sep - 28 Sep	Wizz Air UK
10 Sep - 30 Sep	Wizz Air UK

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 437€

Return flights