Cheapest one-way flights from Bangkok to Helsinki in September from $372

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

One-Way flights

13 Sep Hainan Airlines
12 Sep Hainan Airlines
06 Sep Hainan Airlines
04 Sep Hainan Airlines
01 Sep Hainan Airlines
27 Sep IndiGo
28 Sep IndiGo
02 Sep IndiGo
08 Sep Finnair direct
28 Sep Finnair direct

Also check the deals for return flights from Bangkok to Helsinki in September.

Skyscanner

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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