Cheapest return flights from London to Helsinki in September from $102

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

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

Return flights

18 Sep - 06 Oct Norwegian Air Sweden AOC direct
17 Sep - 06 Oct Norwegian Air Sweden AOC direct
18 Sep - 05 Oct Norwegian Air Sweden AOC direct
18 Sep - 02 Oct Norwegian Air Sweden AOC direct
18 Sep - 01 Oct Norwegian Air Sweden AOC direct
12 Sep - 02 Oct Norwegian Air Sweden AOC direct
12 Sep - 01 Oct Norwegian Air Sweden AOC direct
18 Sep - 24 Sep Norwegian Air Sweden AOC direct
18 Sep - 29 Sep Norwegian Air Sweden AOC direct
18 Sep - 22 Sep Norwegian Air Sweden AOC direct
12 Sep - 24 Sep Norwegian Air Sweden AOC direct
12 Sep - 29 Sep Norwegian Air Sweden AOC direct
12 Sep - 22 Sep Norwegian Air Sweden AOC direct
22 Sep - 06 Oct Norwegian Air Sweden AOC direct
26 Sep - 06 Oct Norwegian Air Sweden AOC direct
17 Sep - 05 Oct Norwegian Air Sweden AOC direct
17 Sep - 24 Sep Norwegian Air Sweden AOC direct
17 Sep - 29 Sep Norwegian Air Sweden AOC direct
17 Sep - 22 Sep Norwegian Air Sweden AOC direct
11 Sep - 24 Sep Norwegian Air Sweden AOC direct

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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