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

Return flights

24 Aug - 28 Aug	Scandinavian Airlines
17 Aug - 27 Aug	Scandinavian Airlines
26 Aug - 31 Aug	Scandinavian Airlines
15 Aug - 28 Aug	Scandinavian Airlines
19 Aug - 30 Aug	Scandinavian Airlines
11 Aug - 20 Aug	Scandinavian Airlines
17 Aug - 23 Aug	Scandinavian Airlines
10 Aug - 17 Aug	Scandinavian Airlines
17 Aug - 27 Aug	Lufthansa	direct
17 Aug - 23 Aug	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Keflavik in August from 260€

Return flights