Cheapest return flights from Istanbul to Keflavik in May from $229

AirHint found the following cheapest return flights from Istanbul (IST) to Keflavik (KEF) in May 2026 (see full year).

Return flights

16 May - 26 May Wizz Air UK
09 May - 16 May Wizz Air UK
06 May - 14 May Pegasus Airlines
08 May - 14 May Pegasus Airlines
05 May - 27 May Pegasus Airlines
01 May - 04 May AJet
01 May - 10 May Scandinavian Airlines
16 May - 21 May Wizz Air UK
04 May - 12 May Pegasus Airlines
27 May - 05 Jun Pegasus Airlines
16 May - 20 May Wizz Air
30 May - 06 Jun Transavia France
22 May - 04 Jun Scandinavian Airlines

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

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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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