Cheapest return flights from London to Helsinki in August from $198

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

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

Return flights

16 Aug - 18 Aug Scandinavian Airlines
19 Aug - 20 Aug Scandinavian Airlines
16 Aug - 20 Aug Scandinavian Airlines
18 Aug - 19 Aug Scandinavian Airlines
20 Aug - 28 Aug Scandinavian Airlines
20 Aug - 01 Sep Scandinavian Airlines
30 Aug - 03 Sep Lufthansa
12 Aug - 16 Sep Lufthansa
13 Aug - 18 Aug Lufthansa
13 Aug - 19 Aug Lufthansa
14 Aug - 18 Aug Lufthansa
12 Aug - 19 Aug Lufthansa
25 Aug - 27 Aug Scandinavian Airlines
22 Aug - 01 Sep Scandinavian Airlines
12 Aug - 16 Sep Finnair direct
25 Aug - 06 Sep Lufthansa
30 Aug - 05 Sep KLM
30 Aug - 04 Sep Scandinavian Airlines
23 Aug - 01 Sep Scandinavian Airlines
30 Aug - 07 Sep KLM

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

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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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