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

Return flights

11 Sep - 16 Sep	IndiGo
09 Sep - 16 Sep	IndiGo
20 Sep - 27 Sep	IndiGo
11 Sep - 18 Sep	IndiGo
27 Sep - 27 Oct	Lufthansa
19 Sep - 04 Oct	IndiGo
09 Sep - 16 Sep	Finnair	direct
11 Sep - 18 Sep	Finnair	direct
20 Sep - 27 Sep	Finnair	direct
25 Sep - 17 Oct	airBaltic
27 Sep - 27 Oct	Finnair	direct
11 Sep - 16 Sep	Finnair	direct
19 Sep - 04 Oct	Finnair	direct

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 512€

Return flights