Cheapest one-way flights from Raleigh-durham to San Juan in September from $111

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

30 Sep Frontier Airlines
24 Sep Frontier Airlines
29 Sep jetBlue direct
26 Sep Breeze Airways
25 Sep Frontier Airlines
23 Sep Frontier Airlines
22 Sep Frontier Airlines
25 Sep jetBlue direct
21 Sep Frontier Airlines
22 Sep jetBlue direct

Also check the deals for return flights from Raleigh-durham to San Juan in September.

Skyscanner

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.