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

Return flights

09 Sep - 13 Sep	Air France
18 Sep - 22 Sep	IndiGo
19 Sep - 27 Sep	IndiGo
19 Sep - 23 Sep	IndiGo
12 Sep - 18 Sep	KLM
29 Sep - 06 Oct	Lufthansa
18 Sep - 26 Sep	IndiGo
19 Sep - 30 Sep	IndiGo
24 Sep - 30 Sep	IndiGo
26 Sep - 04 Oct	Lufthansa
08 Sep - 14 Sep	Lufthansa
04 Sep - 14 Sep	Turkish Airlines
27 Sep - 05 Oct	Finnair	direct
30 Sep - 05 Oct	Lufthansa
30 Sep - 09 Oct	Lufthansa
26 Sep - 03 Oct	Lufthansa
30 Sep - 08 Oct	Lufthansa
26 Sep - 03 Oct	Finnair	direct
26 Sep - 04 Oct	Finnair	direct
30 Sep - 09 Oct	Finnair	direct

Also check the deals for one-way flights from Delhi to Helsinki 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 Delhi to Helsinki in September from 457€

Return flights