AirHint found the following cheapest one-way flights from San Juan (SJU) to Washington (IAD) in April 2026 (see full year).
One-Way flights
| 01 Apr | Frontier Airlines | ||
| 12 Apr | Frontier Airlines | ||
| 26 Apr | United | ||
| 26 Apr | United | direct | |
| 01 Apr | United | direct | |
| 02 Apr | United | direct | |
| 12 Apr | United | direct |
Also check the deals for return flights from San Juan to Washington in April.
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