AirHint found the following cheapest return flights from Washington (DCA) to San Juan (SJU) in April 2026 (see full year).
Return flights
| 13 Apr - 17 Apr | Delta | ||
| 06 Apr - 11 Apr | Southwest Airlines | ||
| 11 Apr - 25 Apr | jetBlue | ||
| 03 Apr - 06 Apr | Southwest Airlines | ||
| 09 Apr - 12 Apr | United |
Also check the deals for one-way flights from Washington to San Juan in April.
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