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

Return flights

29 Aug - 15 Sep	airBaltic	direct
31 Aug - 11 Sep	airBaltic	direct
29 Aug - 09 Sep	airBaltic
22 Aug - 26 Aug	Scandinavian Airlines
07 Aug - 10 Aug	Scandinavian Airlines
27 Aug - 28 Aug	Scandinavian Airlines
29 Aug - 08 Sep	airBaltic	direct
17 Aug - 19 Aug	Ryanair
24 Aug - 26 Aug	Ryanair
13 Aug - 19 Aug	Ryanair
22 Aug - 28 Aug	Scandinavian Airlines
17 Aug - 23 Aug	Ryanair
28 Aug - 08 Sep	Ryanair
14 Aug - 17 Aug	Ryanair
01 Aug - 07 Aug	Scandinavian Airlines

Also check the deals for one-way flights from Riga to Keflavik 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 Riga to Keflavik in August from $224

Return flights