AirHint found the following cheapest return flights from San Diego (SAN) to San Juan (SJU) in April 2026 (see full year).
Return flights
| 23 Apr - 28 Apr | United | ||
| 01 Apr - 06 Apr | Southwest Airlines | ||
| 05 Apr - 14 Apr | United | ||
| 02 Apr - 05 Apr | Southwest Airlines |
Also check the deals for one-way flights from San Diego to San Juan in April.
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