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

Return flights

09 Sep - 20 Sep	airBaltic
01 Sep - 23 Sep	Vueling Airlines
08 Sep - 18 Sep	Norwegian Air Sweden AOC
17 Sep - 23 Sep	Ryanair
17 Sep - 18 Sep	Ryanair
11 Sep - 18 Sep	airBaltic
10 Sep - 14 Sep	Norwegian Air Sweden AOC
25 Sep - 28 Sep	Norwegian Air Sweden AOC
26 Sep - 28 Sep	Norwegian Air Sweden AOC
16 Sep - 18 Sep	airBaltic
22 Sep - 04 Oct	airBaltic
22 Sep - 05 Oct	airBaltic
29 Sep - 01 Oct	easyJet
29 Sep - 02 Oct	airBaltic
30 Sep - 03 Oct	airBaltic
29 Sep - 22 Oct	airBaltic
27 Sep - 01 Oct	airBaltic
28 Sep - 02 Oct	airBaltic
28 Sep - 03 Oct	airBaltic

Also check the deals for one-way flights from London 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 London to Tallinn in September from 139€

Return flights