Cheapest one-way flights from London to Helsinki in September from 128€

Best time to book flights for London (LCY) to Helsinki (HEL) flights at AirHint

AirHint found the following cheapest one-way flights from London (LCY) to Helsinki (HEL) in September 2025 (see full year).

One-Way flights

16 Sep KLM
18 Sep KLM
01 Sep KLM

Also check the deals for return flights from London to Helsinki 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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