AirHint found the following cheapest one-way flights from San Diego (SAN) to San Juan (SJU) in August 2025 (see full year).
One-Way flights
| 28 Aug | Spirit Airlines | ||
| 30 Aug | Spirit Airlines | ||
| 27 Aug | Frontier Airlines | ||
| 31 Aug | Spirit Airlines | ||
| 25 Aug | Frontier Airlines | ||
| 16 Aug | Frontier Airlines | ||
| 17 Aug | Frontier Airlines |
Also check the deals for return flights from San Diego to San Juan in August.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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