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

Return flights

18 Apr - 25 Apr	easyJet
10 Apr - 17 Apr	Lufthansa
11 Apr - 13 Apr	Lufthansa
17 Apr - 24 Apr	Lufthansa
10 Apr - 24 Apr	Lufthansa
06 Apr - 13 Apr	Lufthansa
08 Apr - 15 Apr	Scandinavian Airlines
20 Apr - 27 Apr	Scandinavian Airlines
09 Apr - 23 Apr	Scandinavian Airlines
10 Apr - 12 Apr	Scandinavian Airlines

Also check the deals for one-way flights from Prague 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 Prague to Keflavik in April from $178

Return flights