Cheapest one-way flights from London to Helsinki in September from $107

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

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

One-Way flights

21 Sep Scandinavian Airlines
12 Sep Scandinavian Airlines
11 Sep Scandinavian Airlines
14 Sep Scandinavian Airlines
09 Sep Scandinavian Airlines
25 Sep Scandinavian Airlines
29 Sep Scandinavian Airlines
29 Sep Finnair direct
20 Sep Scandinavian Airlines
06 Sep Scandinavian Airlines

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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