AirHint found the following cheapest one-way flights from Dallas (DAL) to San Juan (SJU) in December 2025 (see full year).
One-Way flights
| 29 Dec | Southwest Airlines | ||
| 31 Dec | Southwest Airlines | ||
| 30 Dec | Southwest Airlines | ||
| 28 Dec | Southwest Airlines | ||
| 27 Dec | Southwest Airlines |
Also check the deals for return flights from Dallas to San Juan in December.
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