Cheapest return flights from Istanbul to Keflavik in September from $301

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

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

Return flights

19 Sep - 23 Sep Pegasus Airlines
12 Sep - 14 Sep AJet
13 Sep - 20 Sep Pegasus Airlines
11 Sep - 17 Sep AJet
08 Sep - 15 Sep AJet
21 Sep - 28 Sep Pegasus Airlines
12 Sep - 16 Sep AJet
09 Sep - 13 Sep Pegasus Airlines
08 Sep - 12 Sep Pegasus Airlines
06 Sep - 12 Sep Pegasus Airlines
26 Sep - 07 Oct Pegasus Airlines

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

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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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