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

One-Way flights

27 Aug	IndiGo
25 Aug	China Eastern
24 Aug	China Eastern
30 Aug	Thai VietJet Air
19 Aug	China Eastern
20 Aug	China Eastern
18 Aug	China Eastern
21 Aug	Air China
28 Aug	Finnair	direct
27 Aug	Finnair	direct

Also check the deals for return 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 one-way flights from Bangkok to Helsinki in August from $431

One-Way flights