AirHint found the following cheapest return flights from Keflavik (KEF) to Istanbul (IST) in March 2026 (see full year).
Return flights
| 03 Mar - 09 Mar | easyJet | ||
| 12 Mar - 18 Mar | LOT | ||
| 26 Mar - 07 Apr | Transavia France | ||
| 11 Mar - 17 Mar | Wizz Air | ||
| 03 Mar - 09 Mar | Icelandair | direct | |
| 12 Mar - 18 Mar | Icelandair | direct | |
| 01 Mar - 01 Mar | Icelandair |
Also check the deals for one-way flights from Keflavik to Istanbul in March.
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