Cheapest return flights from London to Helsinki in September from 158€

AirHint found the following cheapest return flights from London (LHR) to Helsinki (HEL) in September 2026 (see full year).

Return flights

17 Sep - 22 Sep Scandinavian Airlines
11 Sep - 15 Sep Scandinavian Airlines
16 Sep - 30 Sep Scandinavian Airlines
21 Sep - 21 Sep Scandinavian Airlines
02 Sep - 12 Sep Scandinavian Airlines
04 Sep - 09 Sep Scandinavian Airlines
25 Sep - 28 Sep Scandinavian Airlines
22 Sep - 26 Sep Scandinavian Airlines
16 Sep - 20 Sep Scandinavian Airlines
21 Sep - 26 Sep Scandinavian Airlines
19 Sep - 05 Oct Scandinavian Airlines
30 Sep - 04 Oct Scandinavian Airlines
25 Sep - 09 Oct Scandinavian Airlines
30 Sep - 04 Oct Finnair direct
19 Sep - 05 Oct Finnair direct

Also check the deals for one-way flights from London to Helsinki in September.

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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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