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

Return flights

29 Aug - 19 Sep	British Airways	direct
29 Aug - 07 Sep	British Airways
31 Aug - 06 Sep	British Airways
31 Aug - 08 Sep	British Airways
31 Aug - 04 Sep	LOT
29 Aug - 05 Sep	LOT
30 Aug - 07 Sep	Finnair
30 Aug - 06 Sep	Lufthansa
29 Aug - 02 Sep	British Airways
28 Aug - 04 Sep	British Airways
29 Aug - 30 Aug	British Airways
28 Aug - 30 Aug	British Airways
25 Aug - 30 Aug	LOT
26 Aug - 29 Aug	LOT
27 Aug - 29 Aug	LOT
27 Aug - 28 Aug	Finnair
25 Aug - 27 Aug	Finnair
26 Aug - 28 Aug	Finnair
24 Aug - 27 Aug	British Airways
24 Aug - 28 Aug	British Airways

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 $222

Return flights