Cheapest return flights from Helsinki to Bangkok in September from $674

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

Return flights

16 Sep - 23 Sep Pegasus Airlines
17 Sep - 06 Oct Pegasus Airlines
15 Sep - 06 Oct Pegasus Airlines
20 Sep - 05 Oct Pegasus Airlines
12 Sep - 06 Oct Pegasus Airlines
26 Sep - 12 Oct Pegasus Airlines
10 Sep - 23 Sep Pegasus Airlines
17 Sep - 29 Sep Pegasus Airlines
16 Sep - 06 Oct Pegasus Airlines
22 Sep - 05 Oct Pegasus Airlines
29 Sep - 12 Oct Pegasus Airlines
10 Sep - 02 Oct Pegasus Airlines
17 Sep - 27 Sep Pegasus Airlines
15 Sep - 28 Sep Pegasus Airlines
16 Sep - 28 Sep Pegasus Airlines
26 Sep - 10 Oct Pegasus Airlines
15 Sep - 25 Sep Pegasus Airlines
14 Sep - 30 Sep Pegasus Airlines
16 Sep - 20 Sep Pegasus Airlines
12 Sep - 14 Sep Pegasus Airlines

Also check the deals for one-way 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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