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

Return flights

20 Aug - 23 Aug	airBaltic	direct
20 Aug - 26 Aug	airBaltic
25 Aug - 01 Sep	airBaltic	direct
20 Aug - 27 Aug	airBaltic
25 Aug - 08 Sep	airBaltic	direct
20 Aug - 26 Aug	airBaltic	direct
06 Aug - 10 Aug	airBaltic
20 Aug - 29 Aug	airBaltic
08 Aug - 12 Aug	Norwegian Air Sweden AOC
17 Aug - 26 Aug	Norwegian Air Sweden AOC
03 Aug - 07 Aug	Ryanair
06 Aug - 07 Aug	Finnair

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 190€

Return flights