AirHint found the following cheapest one-way flights from Washington (DCA) to San Juan (SJU) in March 2026 (see full year).
One-Way flights
| 01 Mar | Southwest Airlines | ||
| 18 Mar | Southwest Airlines | ||
| 08 Mar | Southwest Airlines | ||
| 03 Mar | Delta | ||
| 16 Mar | Delta | ||
| 10 Mar | Delta | ||
| 23 Mar | Delta | ||
| 31 Mar | jetBlue | ||
| 11 Mar | Southwest Airlines | ||
| 24 Mar | Delta |
Also check the deals for return flights from Washington to San Juan in March.
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