Baltimore (BWI) to Greenville/Greer/Spartanburg (GSP) flights
Southwest Airlines flies nonstop from Baltimore/Washington International Thurgood Marshall Airport to Greenville-Spartanburg International Airport, with about 14 flights a week in July 2026. The 426-mile flight takes about 1h 28m gate to gate.
- Distance
- 426 mi · 686 km
- Flight time
- 1h 28m
- Airlines
- 1
- Seats filled
- 66%
Airlines flying BWI to GSP
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest Airlines | 14 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800 | 67,063 | 1h 28m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BWI to GSP flight schedule
6 flight numbers flew this route in August 2026. The first usually leaves at 8:25am and the last at 6:45pm. 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 626Southwest Airlines | 8:25am | 10:05am | 4 | n/a |
| WN 4321Southwest Airlines | 8:35am | 10:10am | 4 | n/a |
| WN 835Southwest Airlines | 8:40am | 10:15am | 8 | n/a |
| WN 105Southwest Airlines | 2:35pm | 4:05pm | 12 | 83% |
| WN 1693Southwest Airlines | 5:55pm | 7:25pm | 16 | 56% |
| WN 4936Southwest Airlines | 6:45pm | 8:15pm | 12 | 36% |
Is BWI to GSP on time?
From September 2025 to August 2026, 81% of 720 flights arrived within 15 minutes of schedule and 1.8% were cancelled. Flights leaving around 8am were the most punctual (93%), those around 8pm the least (68%). Most delay time was caused by late-arriving aircraft (43%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 720 | 81% | 13 min | 1.8% |
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 |
|---|---|---|---|
| 8am to 9am | 202 | 93% | |
| 11am to 12pm | 142 | 84% | |
| 6pm to 7pm | 144 | 75% | |
| 7pm to 8pm | 70 | 71% | |
| 8pm to 9pm | 117 | 68% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 63 | 6,066 | |
| September 2025 | 60 | 5,914 | |
| October 2025 | 58 | 6,671 | |
| November 2025 | 56 | 5,613 | |
| December 2025 | 60 | 5,904 | |
| January 2026 | 56 | 3,513 | |
| February 2026 | 56 | 4,231 | |
| March 2026 | 62 | 5,409 | |
| April 2026 | 60 | 5,514 | |
| May 2026 | 62 | 5,993 | |
| June 2026 | 59 | 6,213 | |
| July 2026 | 61 | 6,022 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.