Cheapest return flights from London to Helsinki in September from 148€

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

Return flights

30 Sep - 08 Oct Scandinavian Airlines
30 Sep - 07 Oct Scandinavian Airlines
30 Sep - 16 Oct Scandinavian Airlines
29 Sep - 01 Oct Scandinavian Airlines
29 Sep - 08 Oct Scandinavian Airlines
28 Sep - 30 Sep Scandinavian Airlines
30 Sep - 04 Oct Scandinavian Airlines
28 Sep - 01 Oct Scandinavian Airlines
28 Sep - 29 Sep Scandinavian Airlines
28 Sep - 04 Oct Scandinavian Airlines
25 Sep - 30 Sep Scandinavian Airlines
27 Sep - 30 Sep Scandinavian Airlines
27 Sep - 29 Sep Scandinavian Airlines
30 Sep - 03 Oct Scandinavian Airlines
25 Sep - 15 Oct Scandinavian Airlines
24 Sep - 29 Sep Vueling Airlines
26 Sep - 29 Sep Scandinavian Airlines
25 Sep - 29 Sep Scandinavian Airlines
23 Sep - 30 Sep Scandinavian Airlines
27 Sep - 27 Sep Scandinavian Airlines

Also check the deals for one-way 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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