AirHint found the following cheapest return flights from London (LCY) to Tallinn (TLL) in December 2025 (see full year).

Return flights

06 Dec - 13 Dec	SWISS
05 Dec - 07 Dec	SWISS
05 Dec - 10 Dec	SWISS
04 Dec - 08 Dec	SWISS
05 Dec - 08 Dec	SWISS
10 Dec - 13 Dec	Lufthansa
08 Dec - 12 Dec	Lufthansa
11 Dec - 16 Dec	SWISS
09 Dec - 16 Dec	Lufthansa
09 Dec - 13 Dec	Lufthansa
31 Dec - 06 Jan	KLM
30 Dec - 08 Jan	LOT
09 Dec - 01 Jan	KLM
30 Dec - 06 Jan	KLM
01 Dec - 01 Jan	KLM
29 Dec - 01 Jan	KLM
23 Dec - 10 Jan	SWISS
17 Dec - 05 Jan	Lufthansa
30 Dec - 01 Jan	KLM
15 Dec - 05 Jan	Lufthansa

Also check the deals for one-way flights from London to Tallinn in December.

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 Tallinn in December from 208€

Return flights