AirHint found the following cheapest one-way flights from Baltimore (BWI) to San Juan (SJU) in September 2026 (see full year).
One-Way flights
| 16 Sep | Frontier Airlines | ||
| 19 Sep | Frontier Airlines | ||
| 20 Sep | Frontier Airlines | ||
| 13 Sep | Southwest Airlines | ||
| 14 Sep | Southwest Airlines | direct | |
| 13 Sep | Southwest Airlines | direct | |
| 19 Sep | Southwest Airlines | direct |
Also check the deals for return flights from Baltimore to San Juan in September.
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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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