AirHint found the following cheapest return flights from Bangkok (BKK) to Helsinki (HEL) in August 2025 (see full year).

Return flights

13 Aug - 20 Aug	China Eastern
23 Aug - 08 Sep	IndiGo
23 Aug - 07 Sep	IndiGo
07 Aug - 14 Aug	Air India
11 Aug - 18 Aug	China Eastern
26 Aug - 01 Sep	IndiGo
10 Aug - 17 Aug	IndiGo
29 Aug - 05 Sep	IndiGo
24 Aug - 31 Aug	IndiGo
08 Aug - 15 Aug	Air India
07 Aug - 19 Aug	IndiGo
05 Aug - 19 Aug	China Eastern
18 Aug - 27 Aug	IndiGo
06 Aug - 19 Aug	Etihad Airways
23 Aug - 08 Sep	Finnair	direct
23 Aug - 07 Sep	Finnair	direct
29 Aug - 05 Sep	Finnair	direct
26 Aug - 01 Sep	Finnair	direct
30 Aug - 04 Sep	KLM

Also check the deals for one-way flights from Bangkok to Helsinki in August.

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 Bangkok to Helsinki in August from 669€

Return flights