AirHint found the following cheapest one-way flights from London (LCY) to Helsinki (HEL) in May 2026 (see full year).
One-Way flights
| 06 May | KLM | ||
| 15 May | KLM | ||
| 28 May | KLM | ||
| 27 May | KLM | ||
| 29 May | KLM | ||
| 09 May | KLM | ||
| 08 May | KLM | ||
| 07 May | KLM | ||
| 30 May | KLM | ||
| 18 May | KLM |
Also check the deals for return flights from London to Helsinki in May.
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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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