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

Return flights

27 Aug - 03 Sep	KLM
13 Aug - 02 Sep	SWISS
14 Aug - 02 Sep	SWISS
15 Aug - 02 Sep	SWISS
18 Aug - 02 Sep	SWISS
20 Aug - 02 Sep	SWISS
14 Aug - 03 Sep	KLM
25 Aug - 03 Sep	KLM
08 Aug - 02 Sep	SWISS
27 Aug - 05 Sep	KLM
13 Aug - 20 Aug	Lufthansa
14 Aug - 20 Aug	SWISS
14 Aug - 19 Aug	SWISS
21 Aug - 26 Aug	SWISS
13 Aug - 18 Aug	Lufthansa
14 Aug - 16 Aug	SWISS
14 Aug - 18 Aug	SWISS
18 Aug - 20 Aug	SWISS
26 Aug - 29 Aug	KLM
08 Aug - 22 Aug	SWISS

Also check the deals for one-way flights from London to Tallinn in August.

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 August from $315

Return flights