AirHint found the following cheapest return flights from Split (SPU) to Istanbul (IST) in September 2026 (see full year).
Return flights
| 09 Sep - 13 Sep | Aegean Airlines | ||
| 10 Sep - 13 Sep | Norwegian Air Sweden AOC | ||
| 24 Sep - 27 Sep | Croatia Airlines | ||
| 17 Sep - 20 Sep | Croatia Airlines |
Also check the deals for one-way flights from Split to Istanbul in September.
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