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

Return flights

09 Sep - 27 Sep	Pegasus Airlines
15 Sep - 22 Sep	Pegasus Airlines
08 Sep - 22 Sep	Pegasus Airlines
10 Sep - 27 Sep	Pegasus Airlines
01 Sep - 16 Sep	Norwegian Air Sweden AOC
10 Sep - 28 Sep	Pegasus Airlines
15 Sep - 27 Sep	Pegasus Airlines
01 Sep - 01 Oct	Pegasus Airlines
16 Sep - 23 Sep	Pegasus Airlines
01 Sep - 08 Sep	Pegasus Airlines
01 Sep - 11 Sep	Pegasus Airlines
08 Sep - 23 Oct	Pegasus Airlines
08 Sep - 08 Oct	Qatar Airways

Also check the deals for one-way flights from Helsinki 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 Helsinki to Colombo in September from 500€

Return flights