Cheapest one-way flights from Istanbul to Keflavik in September from 100€

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

AirHint found the following cheapest one-way flights from Istanbul (IST) to Keflavik (KEF) in September 2025 (see full year).

One-Way flights

16 Sep Pegasus Airlines
27 Sep Wizz Air UK
15 Sep Wizz Air UK
13 Sep Wizz Air UK
10 Sep Wizz Air UK
26 Sep Wizz Air UK
11 Sep Pegasus Airlines
01 Sep Pegasus Airlines
16 Sep Icelandair direct
13 Sep Icelandair direct

Also check the deals for return 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik