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

Return flights

25 Sep - 29 Sep	Pegasus Airlines
17 Sep - 25 Sep	Pegasus Airlines
25 Sep - 10 Oct	Turkish Airlines
28 Sep - 10 Oct	Pegasus Airlines
25 Sep - 17 Oct	Pegasus Airlines
14 Sep - 21 Sep	Pegasus Airlines
25 Sep - 10 Oct	Finnair	direct
25 Sep - 29 Sep	Finnair	direct
11 Sep - 14 Sep	Finnair	direct
17 Sep - 25 Sep	Finnair	direct
15 Sep - 22 Sep	Qatar Airways
14 Sep - 21 Sep	Finnair	direct
15 Sep - 22 Sep	Finnair	direct
17 Sep - 23 Sep	Scandinavian Airlines

Also check the deals for one-way flights from Helsinki to Singapore 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 Singapore in September from 607€

Return flights