Cheapest return flights from Istanbul to Keflavik in September from 271€

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

06 Sep - 10 Sep Wizz Air UK
03 Sep - 09 Sep Norwegian
02 Sep - 09 Sep Wizz Air
06 Sep - 14 Sep Pegasus Airlines
01 Sep - 07 Sep Wizz Air UK
06 Sep - 10 Sep Icelandair direct
06 Sep - 14 Sep Icelandair direct
15 Sep - 22 Sep 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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