AirHint found the following cheapest one-way flights from Raleigh-durham (RDU) to San Juan (SJU) in September 2025 (see full year).
One-Way flights
| 24 Sep | Southwest Airlines | ||
| 23 Sep | Southwest Airlines | ||
| 26 Sep | Southwest Airlines | ||
| 25 Sep | Southwest Airlines | ||
| 27 Sep | Southwest Airlines | ||
| 28 Sep | Delta | ||
| 05 Sep | Spirit Airlines | ||
| 19 Sep | Frontier Airlines |
Also check the deals for return flights from Raleigh-durham to San Juan 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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