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

Return flights

16 Dec - 23 Dec	airBaltic
01 Dec - 04 Dec	airBaltic
03 Dec - 07 Dec	airBaltic
10 Dec - 14 Dec	airBaltic
09 Dec - 14 Dec	airBaltic
08 Dec - 11 Dec	airBaltic
11 Dec - 14 Dec	airBaltic
08 Dec - 10 Dec	airBaltic	direct
08 Dec - 12 Dec	airBaltic
02 Dec - 05 Dec	airBaltic
31 Dec - 04 Jan	airBaltic
29 Dec - 01 Jan	airBaltic
25 Dec - 01 Jan	Finnair
26 Dec - 01 Jan	Finnair
29 Dec - 02 Jan	LOT
28 Dec - 02 Jan	Lufthansa
29 Dec - 04 Jan	LOT
29 Dec - 03 Jan	LOT
23 Dec - 02 Jan	Finnair
24 Dec - 04 Jan	Finnair

Also check the deals for one-way flights from Brussels 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 Brussels to Tallinn in December from $91

Return flights