Flights Houston → Greenville
IAH → GSP
How long is the flight from Houston to Greenville?
The flight from Houston (IAH) to Greenville (GSP) takes about 2h 6m. This is an estimate based on the distance between the two airports: the real time depends on the aircraft, wind and any stops.
Route overview
The flight route from Houston to Greenville has an on-time performance rate of 89%, with an average delay of 9.5 minutes per flight. Over the course of a year, this route sees approximately 161 flights, serving the busy Greenville airport which handles nearly 2,018,319 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 Houston (IAH) → Greenville (GSP) route is operated by United Airlines. Across 402 flights monitored in recent months, 86% arrived on time (within 15 min of schedule), with an average delay of 12 minutes. The cancellation rate is 0.50%. FlightGuard's average computed risk is 23.8/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Greenville the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Houston the average ATFM delay is 5.5 minutes.
Heading to Greenville: what to expect in this direction
Flying from Houston (IAH) to Greenville (GSP) heads north-east for about 1,346 km, a flight time of roughly 2h 6m.
Departures from Houston on this leg cluster in the midday window: about 55% of IAH-GSP flights take off then.
Air-traffic congestion: departing Houston the average ATFM delay is 5.5 min (atfm); arriving into Greenville it is 5.5 min (atfm).
Across 402 tracked IAH-GSP flights, 86% left on time with an average delay of 12 min and a 0.5% cancellation rate.
Route facts
Flights on this route
Check the risk of a specific flight.
Flexible on this trip? Compare flights
Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 83% | 5 min | 1.3% |
Airlines operating IAH-GSP
Airports
Frequently asked questions about IAH-GSP
The flight from Houston (IAH) to Greenville (GSP) takes about 2h 6m. This is an estimate based on the distance between the two airports: the real time depends on the aircraft, wind and any stops.
On the Houston (IAH) -> Greenville (GSP) route, on-time performance is 86% with an average delay of 12 minutes, based on 402 tracked flights.
The cancellation rate on Houston-Greenville is 0.50% across 402 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 Greenville, 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.
