AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Istanbul (IST) in May 2026 (see full year).
Return flights
| 27 May - 08 Jun | Frontier Airlines | ||
| 26 May - 08 Jun | Frontier Airlines | ||
| 28 May - 08 Jun | KLM | ||
| 16 May - 19 May | Air France | ||
| 14 May - 17 May | Delta | ||
| 29 May - 08 Jun | Frontier Airlines |
Also check the deals for one-way flights from Raleigh-durham to Istanbul in May.
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