AirHint found the following cheapest return flights from Athens (ATH) to Keflavik (KEF) in August 2026 (see full year).

Return flights

03 Aug - 17 Aug	Scandinavian Airlines
02 Aug - 17 Aug	Scandinavian Airlines
03 Aug - 11 Aug	Scandinavian Airlines
12 Aug - 20 Aug	Scandinavian Airlines
17 Aug - 26 Aug	Scandinavian Airlines
01 Aug - 15 Aug	SKY express
01 Aug - 10 Aug	LOT
06 Aug - 14 Aug	LOT
05 Aug - 12 Aug	SKY express
06 Aug - 15 Aug	Scandinavian Airlines

Also check the deals for one-way flights from Athens 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 Athens to Keflavik in August from 264€

Return flights