Cheapest return flights from London to Helsinki in September from $95

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

12 Sep - 02 Oct Norwegian Air Sweden AOC direct
17 Sep - 02 Oct Norwegian Air Sweden AOC direct
17 Sep - 22 Sep Norwegian Air Sweden AOC direct
12 Sep - 29 Sep Norwegian Air Sweden AOC direct
12 Sep - 22 Sep Norwegian Air Sweden AOC direct
17 Sep - 29 Sep Norwegian Air Sweden AOC direct
12 Sep - 24 Sep Norwegian Air Sweden AOC direct
12 Sep - 25 Sep Norwegian Air Sweden AOC direct
17 Sep - 24 Sep Norwegian Air Sweden AOC direct
17 Sep - 25 Sep Norwegian Air Sweden AOC direct
15 Sep - 29 Sep Norwegian Air Sweden AOC direct
15 Sep - 22 Sep Norwegian Air Sweden AOC direct
30 Sep - 02 Oct Norwegian Air Sweden AOC
23 Sep - 02 Oct Norwegian Air Sweden AOC
30 Sep - 20 Oct Norwegian Air Sweden AOC
30 Sep - 17 Oct Norwegian Air Sweden AOC
30 Sep - 15 Oct Norwegian Air Sweden AOC

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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