Greenville/Greer/Spartanburg (GSP) to Houston (HOU) flights
There were no regular nonstop flights from GSP to HOU in July 2026; the route was flown 170 times in the previous 12 months. The 845-mile flight takes about 2h 21m gate to gate.
- Distance
- 845 mi · 1,360 km
- Flight time
- 2h 21m
- Airlines
- 1
- Seats filled
- 69%
Airlines flying GSP to HOU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Southwest AirlinesSeasonal or ended | n/a | Boeing 737-700 / MAX 7, Boeing 737-800, Boeing 737 MAX 8 | 17,402 | 2h 21m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
Is GSP to HOU on time?
From September 2025 to August 2026, 91% of 147 flights arrived within 15 minutes of schedule and 2% were cancelled. Flights leaving around 12pm were the most punctual (100%), those around 8pm the least (71%). Most delay time was caused by late-arriving aircraft (84%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 147 | 91% | 5 min | 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 |
|---|---|---|---|
| 12pm to 1pm | 20 | 100% | |
| 3pm to 4pm | 29 | 100% | |
| 4pm to 5pm | 39 | 89% | |
| 6pm to 7pm | 23 | 96% | |
| 7pm to 8pm | 12 | 75% | |
| 8pm to 9pm | 17 | 71% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 26 | 2,213 | |
| September 2025 | 26 | 2,364 | |
| October 2025 | 31 | 3,301 | |
| November 2025 | 27 | 3,021 | |
| December 2025 | 31 | 3,740 | |
| January 2026 | 9 | 1,014 | |
| February 2026 | 18 | 1,492 | |
| March 2026 | 2 | 257 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.