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

Return flights

30 Sep - 02 Oct	Ryanair
27 Sep - 29 Sep	Ryanair
23 Sep - 25 Sep	Ryanair
22 Sep - 02 Oct	Ryanair
24 Sep - 27 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
22 Sep - 28 Sep	Ryanair
22 Sep - 23 Sep	Ryanair
27 Sep - 30 Sep	Ryanair
25 Sep - 28 Sep	Ryanair
25 Sep - 29 Sep	Ryanair
24 Sep - 26 Sep	Ryanair
25 Sep - 02 Oct	Ryanair
23 Sep - 24 Sep	Ryanair
28 Sep - 01 Oct	AJet
26 Sep - 03 Oct	Lufthansa
26 Sep - 12 Oct	Ryanair
26 Sep - 03 Oct	Brussels Airlines	direct
22 Sep - 02 Oct	airBaltic	direct
25 Sep - 02 Oct	Brussels Airlines	direct

Also check the deals for one-way flights from Brussels to Tallinn in September.

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 September from 154€

Return flights