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

Return flights

17 Jan - 22 Jan	Wizz Air UK
16 Jan - 23 Jan	easyJet
08 Jan - 13 Jan	Wizz Air UK
16 Jan - 22 Jan	easyJet
12 Jan - 18 Jan	Wizz Air UK
26 Jan - 29 Jan	Wizz Air UK
12 Jan - 15 Jan	Wizz Air UK
19 Jan - 29 Jan	Wizz Air UK
30 Jan - 05 Feb	easyJet
24 Jan - 30 Jan	Wizz Air UK
16 Jan - 19 Jan	easyJet
20 Jan - 10 Feb	Pegasus Airlines
30 Jan - 03 Feb	Pegasus Airlines
30 Jan - 06 Feb	AJet
30 Jan - 02 Feb	AJet
23 Jan - 01 Feb	Wizz Air
23 Jan - 01 Feb	Icelandair	direct
30 Jan - 05 Feb	Icelandair	direct
30 Jan - 03 Feb	Icelandair	direct

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

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 return flights from Istanbul to Keflavik in January from 151€

Return flights