AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Istanbul (IST) in September 2025 (see full year).
Return flights
| 15 Sep - 08 Oct | Spirit Airlines | ||
| 22 Sep - 26 Sep | Spirit Airlines | ||
| 09 Sep - 16 Sep | Frontier Airlines | ||
| 21 Sep - 28 Sep | Breeze Airways | ||
| 06 Sep - 14 Sep | Frontier Airlines | ||
| 02 Sep - 14 Sep | Frontier Airlines |
Also check the deals for one-way flights from Raleigh-durham to Istanbul in September.
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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