Cheapest return flights from Keflavik to Istanbul in April from 185€

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

Return flights

03 Apr - 16 Apr Lufthansa
25 Apr - 02 May Scandinavian Airlines
14 Apr - 20 Apr Scandinavian Airlines
18 Apr - 20 Apr Lufthansa
12 Apr - 21 Apr Wizz Air
12 Apr - 22 Apr Wizz Air
16 Apr - 22 Apr Scandinavian Airlines
14 Apr - 19 Apr Lufthansa
19 Apr - 22 Apr Wizz Air
17 Apr - 20 Apr Lufthansa
13 Apr - 20 Apr Wizz Air

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

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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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