Cheapest return flights from Istanbul to Keflavik in April from $249

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

Return flights

17 Apr - 21 Apr Scandinavian Airlines
12 Apr - 21 Apr Scandinavian Airlines
01 Apr - 09 Apr Scandinavian Airlines
17 Apr - 23 Apr Scandinavian Airlines
11 Apr - 18 Apr Scandinavian Airlines
23 Apr - 27 Apr Scandinavian Airlines
30 Apr - 03 May Scandinavian Airlines
17 Apr - 26 Apr Lufthansa

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

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