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

Return flights

20 Aug - 27 Aug	Lufthansa
20 Aug - 26 Aug	Lufthansa
26 Aug - 04 Sep	Lufthansa
28 Aug - 03 Sep	SWISS
14 Aug - 29 Aug	KLM
21 Aug - 26 Aug	KLM
25 Aug - 29 Aug	KLM
04 Aug - 08 Aug	KLM
12 Aug - 15 Aug	KLM
18 Aug - 21 Aug	KLM
12 Aug - 26 Aug	KLM
14 Aug - 19 Aug	KLM
30 Aug - 05 Sep	KLM
29 Aug - 05 Sep	KLM
20 Aug - 01 Sep	Lufthansa
26 Aug - 01 Sep	Lufthansa
29 Aug - 07 Sep	SWISS
28 Aug - 07 Sep	SWISS
30 Aug - 07 Sep	SWISS
29 Aug - 01 Sep	Lufthansa

Also check the deals for one-way flights from London to Riga 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 Riga in August from $307

Return flights