Cheapest one-way flights from Helsinki to Bangkok in September from $348

Best time to book flights for Helsinki (HEL) to Bangkok (BKK) flights at AirHint

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

One-Way flights

26 Sep Pegasus Airlines
29 Sep Pegasus Airlines
30 Sep Turkish Airlines
28 Sep Turkish Airlines
10 Sep Turkish Airlines
01 Sep Finnair direct
28 Sep Finnair direct
26 Sep Finnair direct
10 Sep Finnair direct
29 Sep Finnair direct

Also check the deals for return flights from Helsinki to Bangkok 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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