Cheapest return flights from Istanbul to Keflavik in April from $253

Best time to book flights for Istanbul (IST) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Istanbul (IST) to Keflavik (KEF) in April 2025 (see full year).

Return flights

29 Apr - 05 May Wizz Air UK
01 Apr - 10 Apr Wizz Air UK
01 Apr - 08 Apr Wizz Air UK
01 Apr - 05 Apr Wizz Air UK
07 Apr - 12 Apr Wizz Air
03 Apr - 13 Apr Wizz Air
04 Apr - 06 Apr Wizz Air UK
23 Apr - 05 May Wizz Air UK
21 Apr - 26 Apr Wizz Air UK

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

Skyscanner

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik