San Juan (SJU) to Baltimore (BWI) flights
Southwest Airlines, Frontier Airlines fly nonstop from Luis Munoz Marin International Airport to Baltimore/Washington International Thurgood Marshall Airport, with about 27 flights a week in July 2026. The 1,565-mile flight takes about 4h 6m gate to gate.
- Distance
- 1,565 mi · 2,519 km
- Flight time
- 4h 6m
- Airlines
- 2
- Seats filled
- 88%
Airlines flying SJU to BWI
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 21 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 129,293 | 4h 8m |
| Frontier Airlines | 7 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 30,121 | 4h 9m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A321, Airbus A320-100/200, Airbus A320neo | 26,515 | 3h 56m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SJU to BWI flight schedule
5 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 5:30am and the last at 3:20pm. 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 1623Southwest Airlines | 5:30am | 9:35am | 20 | 80% |
| F9 2265Frontier Airlines | 7:34am | 11:40am | 31 | 77% |
| WN 4064Southwest Airlines | 2:25pm | 6:35pm | 8 | n/a |
| WN 3869Southwest Airlines | 3:15pm | 7:20pm | 4 | n/a |
| WN 3642Southwest Airlines | 3:20pm | 7:25pm | 24 | 75% |
Is SJU to BWI on time?
From September 2025 to August 2026, 79% of 1,153 flights arrived within 15 minutes of schedule and 2.4% were cancelled. Flights leaving around 7am were the most punctual (90%), those around 5pm the least (69%). Most delay time was caused by late-arriving aircraft (49%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 816 | 81% | 10 min | 1% |
| Frontier Airlines | 184 | 76% | 13 min | 4.9% |
| Spirit Airlines | 153 | 71% | 34 min | 7.2% |
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 |
|---|---|---|---|
| 5am to 6am | 209 | 89% | |
| 6am to 7am | 159 | 88% | |
| 7am to 8am | 118 | 90% | |
| 10am to 11am | 65 | 88% | |
| 11am to 12pm | 25 | 84% | |
| 2pm to 3pm | 50 | 65% | |
| 3pm to 4pm | 126 | 77% | |
| 4pm to 5pm | 105 | 73% | |
| 5pm to 6pm | 129 | 69% | |
| 8pm to 9pm | 48 | 50% | |
| 9pm to 10pm | 46 | 68% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 102 | 18,174 | |
| September 2025 | 71 | 11,872 | |
| October 2025 | 60 | 9,369 | |
| November 2025 | 74 | 11,365 | |
| December 2025 | 113 | 14,829 | |
| January 2026 | 100 | 16,682 | |
| February 2026 | 86 | 13,193 | |
| March 2026 | 104 | 17,579 | |
| April 2026 | 110 | 18,018 | |
| May 2026 | 90 | 14,825 | |
| June 2026 | 109 | 18,742 | |
| July 2026 | 121 | 21,580 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.