AirHint found the following cheapest return flights from Keflavik (KEF) to Istanbul (IST) in November 2025 (see full year).
Return flights
| 27 Nov - 06 Dec | easyJet | ||
| 29 Nov - 03 Dec | Wizz Air | ||
| 28 Nov - 03 Dec | easyJet | ||
| 23 Nov - 28 Nov | Jet2 | ||
| 28 Nov - 05 Dec | easyJet | ||
| 28 Nov - 04 Dec | easyJet |
Also check the deals for one-way flights from Keflavik to Istanbul in November.
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