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

Return flights

05 May - 12 May	Turkish Airlines
30 May - 28 Jun	KLM
29 May - 28 Jun	KLM
30 May - 29 Jun	KLM
30 May - 30 Jun	KLM
31 May - 30 Jun	KLM
31 May - 16 Jun	KLM
23 May - 21 Jun	KLM
22 May - 21 Jun	KLM
29 May - 21 Jun	KLM
11 May - 25 May	Lufthansa
05 May - 12 May	Finnair	direct
19 May - 22 May	Finnair	direct
30 May - 28 Jun	Finnair	direct

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

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Helsinki to Bangkok in May from $689

Return flights