AirHint found the following cheapest return flights from Raleigh-durham (RDU) to San Juan (SJU) in December 2025 (see full year).
Return flights
| 03 Dec - 03 Dec | United | ||
| 10 Dec - 10 Dec | United | ||
| 21 Dec - 27 Dec | Frontier Airlines | direct | |
| 20 Dec - 25 Dec | Southwest Airlines | ||
| 20 Dec - 28 Dec | Delta |
Also check the deals for one-way flights from Raleigh-durham to San Juan in December.
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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