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

Return flights

30 Sep - 05 Oct	Ryanair
30 Sep - 02 Oct	Ryanair
29 Sep - 03 Oct	airBaltic	direct
29 Sep - 06 Oct	airBaltic	direct
29 Sep - 01 Oct	airBaltic
28 Sep - 06 Oct	Ryanair
26 Sep - 29 Sep	airBaltic	direct
26 Sep - 03 Oct	airBaltic	direct
18 Sep - 25 Sep	Ryanair
18 Sep - 21 Sep	Ryanair
21 Sep - 24 Sep	Ryanair
23 Sep - 25 Sep	Ryanair
24 Sep - 25 Sep	Ryanair
26 Sep - 27 Sep	airBaltic
22 Sep - 23 Sep	Ryanair
23 Sep - 26 Sep	Ryanair
22 Sep - 29 Sep	airBaltic	direct
28 Sep - 06 Oct	airBaltic	direct
24 Sep - 01 Oct	airBaltic
28 Sep - 05 Oct	airBaltic	direct

Also check the deals for one-way flights from Tallinn to Copenhagen 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 Tallinn to Copenhagen in September from 145€

Return flights