Cheapest return LHR–HEL flights, September

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

Return flights

18 Sep - 22 Sep Scandinavian Airlines
16 Sep - 26 Sep Scandinavian Airlines
26 Sep - 29 Sep Scandinavian Airlines
22 Sep - 24 Sep Scandinavian Airlines
24 Sep - 28 Sep Scandinavian Airlines
17 Sep - 22 Sep Scandinavian Airlines
07 Sep - 12 Sep Scandinavian Airlines
09 Sep - 12 Sep Scandinavian Airlines
23 Sep - 03 Oct Scandinavian Airlines
09 Sep - 11 Sep Scandinavian Airlines
25 Sep - 28 Sep Scandinavian Airlines
30 Sep - 04 Oct Scandinavian Airlines
21 Sep - 04 Oct Scandinavian Airlines
21 Sep - 04 Oct Finnair direct
30 Sep - 04 Oct Finnair direct
23 Sep - 03 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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