Cheapest return flights from Istanbul to Keflavik in September from 239€

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 September 2025 (see full year).

Return flights

11 Sep - 16 Sep Wizz Air UK
11 Sep - 18 Sep Wizz Air UK
15 Sep - 19 Sep Wizz Air UK
16 Sep - 23 Sep Pegasus Airlines
09 Sep - 14 Sep Wizz Air UK
08 Sep - 12 Sep Wizz Air UK
25 Sep - 02 Oct Pegasus Airlines
22 Sep - 26 Sep Wizz Air UK
06 Sep - 12 Sep Wizz Air UK
26 Sep - 03 Oct British Airways
22 Sep - 29 Sep Turkish Airlines
19 Sep - 26 Sep Turkish Airlines
25 Sep - 02 Oct Icelandair direct

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

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.

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