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

Return flights

21 Apr - 29 Apr	easyJet
01 Apr - 08 Apr	Scandinavian Airlines
08 Apr - 15 Apr	Scandinavian Airlines
06 Apr - 13 Apr	Scandinavian Airlines
13 Apr - 19 Apr	Lufthansa
20 Apr - 27 Apr	Scandinavian Airlines
18 Apr - 25 Apr	easyJet
02 Apr - 05 Apr	Scandinavian Airlines
14 Apr - 21 Apr	Lufthansa
20 Apr - 27 Apr	Icelandair	direct
29 Apr - 09 May	SWISS
29 Apr - 09 May	Icelandair	direct

Also check the deals for one-way flights from Frankfurt to Keflavik in April.

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 April from 231€

Return flights