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

Return flights

18 Sep - 25 Sep	Air China
11 Sep - 25 Sep	Air China
13 Sep - 21 Sep	Air China
09 Sep - 16 Sep	Lufthansa
16 Sep - 25 Sep	Air China
08 Sep - 17 Sep	Lufthansa
08 Sep - 24 Sep	Lufthansa
22 Sep - 29 Sep	Finnair
19 Sep - 30 Sep	Finnair
16 Sep - 25 Sep	Finnair	direct
23 Sep - 02 Oct	Finnair	direct
18 Sep - 13 Oct	Finnair
18 Sep - 01 Oct	Air France
28 Sep - 13 Oct	Finnair
19 Sep - 04 Oct	Finnair
23 Sep - 12 Oct	Finnair
28 Sep - 05 Oct	Finnair
24 Sep - 08 Oct	Finnair
29 Sep - 10 Oct	Finnair
25 Sep - 12 Oct	Finnair

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Helsinki in September from 502€

Return flights