Baltimore (BWI) to San Juan (SJU) flights
Southwest Airlines, Frontier Airlines fly nonstop from Baltimore/Washington International Thurgood Marshall Airport to Luis Munoz Marin International Airport, with about 27 flights a week in July 2026. The 1,565-mile flight takes about 3h 57m gate to gate.
- Distance
- 1,565 mi · 2,519 km
- Flight time
- 3h 57m
- Airlines
- 2
- Seats filled
- 88%
Airlines flying BWI to SJU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 20 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 123,903 | 4h 1m |
| Frontier Airlines | 7 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 30,249 | 3h 53m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A321, Airbus A320-100/200, Airbus A320neo | 28,818 | 3h 41m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BWI to SJU flight schedule
5 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:25am and the last at 7:18pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| WN 441Southwest Airlines | 8:25am | 12:50pm | 12 | 67% |
| WN 759Southwest Airlines | 10:10am | 2:30pm | 12 | 92% |
| F9 1774Frontier Airlines | 12:35pm | 4:40pm | 17 | 71% |
| WN 1090Southwest Airlines | 6:45pm | 10:50pm | 28 | 46% |
| F9 2266Frontier Airlines | 7:18pm | 11:20pm | 14 | 59% |
Is BWI to SJU on time?
From September 2025 to August 2026, 68% of 1,150 flights arrived within 15 minutes of schedule and 2.5% were cancelled. Flights leaving around 6am were the most punctual (83%), those around 8pm the least (57%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (38%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 812 | 67% | 19 min | 0.9% |
| Frontier Airlines | 184 | 63% | 41 min | 6.5% |
| Spirit Airlines | 154 | 78% | 18 min | 6.5% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 113 | 83% | |
| 8am to 9am | 287 | 76% | |
| 9am to 10am | 26 | 77% | |
| 10am to 11am | 35 | 66% | |
| 11am to 12pm | 85 | 67% | |
| 12pm to 1pm | 64 | 71% | |
| 3pm to 4pm | 24 | 50% | |
| 5pm to 6pm | 40 | 63% | |
| 6pm to 7pm | 147 | 65% | |
| 7pm to 8pm | 115 | 59% | |
| 8pm to 9pm | 194 | 57% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 102 | 17,115 | |
| September 2025 | 70 | 10,347 | |
| October 2025 | 61 | 9,078 | |
| November 2025 | 74 | 11,540 | |
| December 2025 | 114 | 19,174 | |
| January 2026 | 96 | 14,769 | |
| February 2026 | 87 | 14,295 | |
| March 2026 | 105 | 17,719 | |
| April 2026 | 110 | 16,132 | |
| May 2026 | 90 | 14,117 | |
| June 2026 | 108 | 18,439 | |
| July 2026 | 118 | 20,245 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.