AirHint found the following cheapest return flights from Helsinki (HEL) to Bangkok (BKK) in April 2026 (see full year).

Return flights

08 Apr - 06 May	Turkish Airlines
15 Apr - 06 May	Turkish Airlines
18 Apr - 13 May	Turkish Airlines
20 Apr - 21 May	Turkish Airlines
07 Apr - 21 Apr	Turkish Airlines
01 Apr - 30 Apr	Turkish Airlines
07 Apr - 22 Apr	Turkish Airlines
05 Apr - 03 May	Turkish Airlines
03 Apr - 01 May	Turkish Airlines
08 Apr - 06 May	Finnair	direct
20 Apr - 21 May	Finnair	direct
15 Apr - 06 May	Finnair	direct
06 Apr - 04 May	Lufthansa
01 Apr - 30 Apr	Finnair	direct
07 Apr - 21 Apr	Finnair	direct
07 Apr - 22 Apr	Finnair	direct

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

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 Helsinki to Bangkok in April from $759

Return flights