Cheapest return flights from London to Helsinki in August from $261

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

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

Return flights

30 Aug - 05 Sep KLM
12 Aug - 14 Sep KLM
16 Aug - 20 Aug KLM
12 Aug - 16 Aug KLM
11 Aug - 20 Aug KLM
12 Aug - 18 Aug KLM
13 Aug - 18 Aug KLM
11 Aug - 15 Aug KLM
11 Aug - 16 Aug KLM
11 Aug - 18 Aug KLM
21 Aug - 23 Aug KLM
16 Aug - 19 Aug KLM
12 Aug - 16 Sep Lufthansa
29 Aug - 02 Sep Lufthansa
25 Aug - 01 Sep KLM
29 Aug - 01 Sep KLM
28 Aug - 01 Sep KLM
30 Aug - 02 Sep KLM
31 Aug - 05 Sep KLM
31 Aug - 01 Sep KLM

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

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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