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

Return flights

16 Mar - 24 Mar	Wizz Air UK
17 Mar - 24 Mar	Wizz Air UK
18 Mar - 24 Mar	Wizz Air UK
16 Mar - 25 Mar	Wizz Air UK
15 Mar - 25 Mar	Wizz Air UK
13 Mar - 22 Mar	Wizz Air UK
16 Mar - 26 Mar	easyJet
13 Mar - 19 Mar	British Airways
18 Mar - 22 Mar	easyJet
13 Mar - 22 Mar	Icelandair	direct

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

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 March from 203€

Return flights