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

Return flights

15 Sep - 23 Sep	Air China
12 Sep - 21 Sep	Air China
08 Sep - 17 Sep	Lufthansa
16 Sep - 24 Sep	Lufthansa
15 Sep - 28 Sep	Lufthansa
18 Sep - 24 Sep	Air China
10 Sep - 17 Sep	Lufthansa
15 Sep - 23 Sep	Finnair	direct
12 Sep - 20 Sep	Air China
12 Sep - 19 Sep	Air China
23 Sep - 02 Oct	Finnair	direct
23 Sep - 01 Oct	Air France
18 Sep - 01 Oct	Air France
23 Sep - 01 Oct	Finnair	direct
21 Sep - 03 Oct	Air France
26 Sep - 12 Oct	Finnair
19 Sep - 04 Oct	Finnair
26 Sep - 04 Oct	Finnair
27 Sep - 12 Oct	Finnair
27 Sep - 04 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 $581

Return flights