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

Return flights

19 Aug - 29 Aug	Norwegian
12 Aug - 22 Aug	Scandinavian Airlines
19 Aug - 28 Aug	Norwegian
19 Aug - 29 Aug	airBaltic	direct
19 Aug - 27 Aug	Norwegian
01 Aug - 01 Sep	Scandinavian Airlines
19 Aug - 27 Aug	airBaltic	direct
18 Aug - 27 Aug	Fly Play
02 Aug - 03 Sep	Scandinavian Airlines
01 Aug - 05 Aug	Scandinavian Airlines
12 Aug - 22 Aug	airBaltic	direct
02 Aug - 03 Sep	airBaltic	direct
18 Aug - 27 Aug	airBaltic	direct

Also check the deals for one-way flights from Keflavik 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 Keflavik to Riga in August from $273

Return flights