Baltimore (BWI) to Islip (ISP) flights
Southwest Airlines flies nonstop from Baltimore/Washington International Thurgood Marshall Airport to Long Island MacArthur Airport, with about 32 flights a week in July 2026. The 220-mile flight takes about 1h 3m gate to gate.
- Distance
- 220 mi · 354 km
- Flight time
- 1h 3m
- Airlines
- 1
- Seats filled
- 73%
Airlines flying BWI to ISP
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 32 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 140,603 | 1h 3m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BWI to ISP flight schedule
11 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:25am and the last at 8:55pm. 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 684Southwest Airlines | 8:25am | 9:40am | 12 | 73% |
| WN 4102Southwest Airlines | 10:55am | 12:05pm | 4 | n/a |
| WN 3974Southwest Airlines | 11:00am | 12:10pm | 8 | n/a |
| WN 1082Southwest Airlines | 11:25am | 12:35pm | 12 | 83% |
| WN 3241Southwest Airlines | 1:20pm | 2:30pm | 8 | n/a |
| WN 961Southwest Airlines | 2:45pm | 3:55pm | 4 | n/a |
| WN 1537Southwest Airlines | 3:15pm | 4:25pm | 24 | 79% |
| WN 665Southwest Airlines | 3:45pm | 4:55pm | 8 | n/a |
| WN 1783Southwest Airlines | 5:35pm | 6:45pm | 4 | n/a |
| WN 963Southwest Airlines | 7:55pm | 9:05pm | 12 | 92% |
| WN 949Southwest Airlines | 8:55pm | 10:05pm | 12 | 27% |
Is BWI to ISP on time?
From September 2025 to August 2026, 78% of 1,260 flights arrived within 15 minutes of schedule and 1.9% were cancelled. Flights leaving around 11am were the most punctual (91%), those around 10pm the least (55%). Most delay time was caused by late-arriving aircraft (49%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 1,260 | 78% | 13 min | 1.9% |
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 |
|---|---|---|---|
| 7am to 8am | 26 | 92% | |
| 10am to 11am | 269 | 89% | |
| 11am to 12pm | 92 | 91% | |
| 12pm to 1pm | 35 | 83% | |
| 1pm to 2pm | 56 | 71% | |
| 2pm to 3pm | 76 | 80% | |
| 3pm to 4pm | 171 | 82% | |
| 4pm to 5pm | 70 | 62% | |
| 5pm to 6pm | 26 | 65% | |
| 7pm to 8pm | 42 | 81% | |
| 8pm to 9pm | 101 | 78% | |
| 9pm to 10pm | 78 | 72% | |
| 10pm to 11pm | 173 | 55% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 97 | 13,824 | |
| September 2025 | 90 | 11,852 | |
| October 2025 | 93 | 12,705 | |
| November 2025 | 90 | 10,131 | |
| December 2025 | 92 | 11,434 | |
| January 2026 | 90 | 8,029 | |
| February 2026 | 80 | 7,068 | |
| March 2026 | 84 | 9,337 | |
| April 2026 | 107 | 11,314 | |
| May 2026 | 114 | 14,014 | |
| June 2026 | 137 | 14,603 | |
| July 2026 | 140 | 16,292 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.