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

One-Way flights

31 Jul	Wizz Air
22 Jul	Pegasus Airlines
15 Jul	Pegasus Airlines
16 Jul	Wizz Air
05 Jul	Pegasus Airlines
29 Jul	Aegean Airlines
21 Jul	Wizz Air
20 Jul	Pegasus Airlines
12 Jul	Pegasus Airlines
09 Jul	Transavia France

Also check the deals for return flights from Istanbul to Keflavik in July.

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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Cheapest one-way flights from Istanbul to Keflavik in July from $140

One-Way flights