AirHint found the following cheapest return flights from Bangkok (BKK) to Helsinki (HEL) in May 2026 (see full year).
Return flights
| 28 May - 06 Jun | KLM | ||
| 20 May - 30 May | KLM | ||
| 20 May - 31 May | Lufthansa | ||
| 13 May - 19 May | Etihad Airways | ||
| 20 May - 30 May | Finnair | direct | |
| 13 May - 19 May | Finnair | direct | |
| 20 May - 31 May | Finnair | direct |
Also check the deals for one-way flights from Bangkok to Helsinki in May.
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