Flights Greenville → Houston
GSP → IAH
How long is the flight from Greenville to Houston?
The flight from Greenville (GSP) to Houston (IAH) takes 2h 7m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Greenville to Houston has a high on-time performance rate of 91%, with an average delay of just 7.7 minutes. Over the course of a year, this route sees 161 flights, connecting passengers to one of the busiest airports in the United States, which serves approximately 40,979,422 passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Greenville (GSP) → Houston (IAH) route is operated by United Airlines. Across 400 flights monitored in recent months, 89% arrived on time (within 15 min of schedule), with an average delay of 8 minutes. The cancellation rate is 1.00%. FlightGuard's average computed risk is 16.7/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Houston the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Greenville the average ATFM delay is 5.5 minutes.
Heading to Houston: what to expect in this direction
Flying from Greenville (GSP) to Houston (IAH) heads west for about 1,346 km, a flight time of roughly 2h 7m.
Departures from Greenville on this leg cluster in the overnight window: about 53% of GSP-IAH flights take off then.
Air-traffic congestion: departing Greenville the average ATFM delay is 5.5 min (atfm); arriving into Houston it is 5.5 min (atfm).
Across 400 tracked GSP-IAH flights, 89% left on time with an average delay of 8 min and a 1.0% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 83% | 5 min | 1.3% |
Airlines operating GSP-IAH
Airports
Frequently asked questions about GSP-IAH
The flight from Greenville (GSP) to Houston (IAH) takes 2h 7m on average. That is the median time recorded across 2 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Greenville (GSP) -> Houston (IAH) route, on-time performance is 89% with an average delay of 8 minutes, based on 400 tracked flights.
The cancellation rate on Greenville-Houston is 1.00% across 400 monitored flights.
The route is operated by 1 airline: United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Houston, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
