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

Return flights

26 Jan - 29 Jan	KLM
16 Jan - 19 Jan	KLM
27 Jan - 30 Jan	KLM
24 Jan - 29 Jan	KLM
15 Jan - 19 Jan	KLM
14 Jan - 21 Jan	KLM
13 Jan - 22 Jan	KLM
14 Jan - 22 Jan	KLM
15 Jan - 20 Jan	KLM
15 Jan - 21 Jan	KLM
31 Jan - 04 Feb	KLM
31 Jan - 02 Feb	KLM
29 Jan - 02 Feb	KLM
29 Jan - 03 Feb	KLM
31 Jan - 05 Feb	KLM
29 Jan - 05 Feb	KLM
30 Jan - 03 Feb	KLM
30 Jan - 04 Feb	KLM
28 Jan - 10 Feb	Lufthansa
06 Jan - 03 Feb	KLM

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

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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Cheapest return flights from London to Helsinki in January from $257

Return flights