Greenville/Greer/Spartanburg to Houston (GSP–IAH) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
GSP–IAH is served by 1 airline with nonstop service. United Airlines leads the route. The flight covers 836 miles in approximately 2h 33m. Beyond nonstop, 52 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: NH, NZ | 28 | E7W | 2h33-2h44 | Star Alliance | NH, NZ |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Houston from Greenville/Greer/Spartanburg
| Metric | GSP→IAH | CLT→IAH | CAE→IAH |
|---|---|---|---|
| Distance from GSP | – | 75 mi | 91 mi |
| Nonstop airlines | 1 | 11 | 1 |
| Weekly flights | 49 | 162 | – |
| Flight time | 2h 33m | 2h 42m | 2h 15m |
| Departure OTP | 72% | – | – |
Travel Essentials
GSP: EDT · IAH: CDT
When it's 6:00 PM in Greenville/Greer/Spartanburg, it's 5:00 PM in Houston.
No direct rail from IAH. The METRO bus 102 (IAH Express) runs to downtown Houston's transit center (60–90 min, $1.25). Taxis to downtown Houston cost $50–70. Ride-hails pick up at the designated Rideshare zones outside baggage claim on the lower level.IAH has five terminals (A–E) connected by an underground tunnel with trams. Terminal D handles international arrivals. Rental car agencies are in a consolidated facility adjacent to Terminal C; a free IAH Connector bus runs between terminals and the rental car center. The Galleria / Uptown area costs $35–50 by ride-hail.
Humid subtropical climate. Hot, humid, and wet for much of the year. Summers are brutal (33–38°C) with high humidity and near-daily afternoon thunderstorms. Severe storms with hail and high winds regularly cause ground stops from April through September. Houston's flooding risk is significant. Heavy rain events, including tropical system remnants, have flooded airport roads, cutting off surface access even when the airport itself remains operational.
Winters are mild (5–18°C) with occasional ice storms. These are rare but highly disruptive when they occur. Hurricane season (June–November) requires monitoring for Gulf storms. October through March has the best flying weather.
GSP–IAH Quick Facts
Frequently Asked Questions
Flights from GSP to IAH
Greenville-Spartanburg International Airport (GSP) and George Bush Intercontinental Airport (IAH) are connected by nonstop service from United Airlines. With 49 weekly departures, this is a heavily served route.
GSP to IAH Flight Duration and Schedule
Nonstop flight time from GSP to IAH ranges from 2 hours 33 minutes to 2 hours 58 minutes. The route covers a distance of 836 miles (1,346 km). There are approximately 49 weekly flights outbound and 42 return, totaling 91 flights per week in both directions.
Connecting Options and Alternatives
52 one-stop connections are available, with the fastest taking approximately 3 hours via PDK. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Charlotte (CLT), Columbia (CAE) and Knoxville/Maryville (TYS).