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

Return flights

01 Dec - 03 Dec	LOT
04 Dec - 06 Dec	LOT
05 Dec - 08 Dec	LOT
05 Dec - 12 Dec	LOT
06 Dec - 08 Dec	LOT
02 Dec - 04 Dec	Scandinavian Airlines
02 Dec - 06 Dec	Scandinavian Airlines
11 Dec - 13 Dec	Scandinavian Airlines
11 Dec - 15 Dec	Scandinavian Airlines
08 Dec - 11 Dec	Scandinavian Airlines
25 Dec - 25 Jan	Lufthansa
23 Dec - 09 Jan	Finnair
30 Dec - 08 Jan	Finnair
29 Dec - 01 Jan	Finnair
25 Dec - 02 Jan	Finnair
24 Dec - 02 Jan	Finnair
30 Dec - 02 Jan	Finnair
29 Dec - 02 Jan	Lufthansa
28 Dec - 02 Jan	Lufthansa
26 Dec - 02 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 145€

Return flights