Greenville-Spartanburg International Airport
Greenville, United StatesGSP / KGSP
Regional airport · 49 direct destinations · 1 runway · longest runway 11,001 ft
84 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Greenville → Houston
GSP
GreenvilleGreenville-Spartanburg International Airport
GreenvilleGreenville-Spartanburg International AirportIAHHoustonGeorge Bush Intercontinental Airport
HoustonGeorge Bush Intercontinental Airport- Distance
- 836 mi
- Estimated flight time
- ~2h 10m
Houston is currently 1 hour behind Greenville.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 2 flights a day, observed from October 2025 to September 2026.
- 2
- flights per day
- 2
- busiest month · Oct
- 1
- quietest month · Dec
- 2 hr 4 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 2Jan2026
- 1Feb
- 2Mar
- 2Apr
- 2May
- 2Jun
- 2Jul
- 2Aug
- 2Sep
- 2Oct2025
- 2Nov
- 1Dec
Airlines
Who flies it
Mesa Airlinesall year
SkyWest Airlineswinter
Through the day
Departure times
Local time in Greenville. Most departures between 06:00 and 09:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 1.7Mon
- 1.5Tue
- 1.8Wed
- 1.8Thu
- 1.9Fri
- 1.3Sat
- 1.6Sun
Fleet
Aircraft observed
- Embraer 175E75L100%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 2 | 37 |
|
| February 2026 | 1 | 39 |
|
| March 2026 | 2 | 52 |
|
| April 2026 | 2 | 56 |
|
| May 2026 | 2 | 53 |
|
| June 2026 | 2 | 56 |
|
| July 2026 | 2 | 59 |
|
| August 2026 | 2 | 53 |
|
| September 2026 | 2 | 42 |
|
| October 2025 | 2 | 57 |
|
| November 2025 | 2 | 50 |
|
| December 2025 | 1 | 39 |
|
Airlines observed on this route
From observed callsign routes on GSP-IAH - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The 8th longest observed direct route from GSP, out of 49.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Greenville: 49.
- Direct destinations observed from Houston: 159.
The airports on this route
George Bush Intercontinental Airport
Houston, United StatesIAH / KIAH
International hub · 159 direct destinations · 5 runways · longest runway 12,001 ft
75 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Greenville to Houston
The observed direct connection between Greenville-Spartanburg International Airport (GSP) and George Bush Intercontinental Airport (IAH) covers approximately 836 mi. The estimated flight time is around 2h 10m. Mesa Airlines and SkyWest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Greenville from Houston by air?
- The great-circle distance between Greenville-Spartanburg International Airport and George Bush Intercontinental Airport is approximately 836 mi.
- How long is the flight from Greenville to Houston?
- Based on the distance, the estimated flight time is about 2h 10m. This is an estimate, not a schedule.
- Is there a direct connection from Greenville to Houston?
- Yes, a direct connection between GSP and IAH has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Mesa Airlines and SkyWest Airlines.
- How often is there a flight from Greenville to Houston?
- On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 593 observed flights. Mainly Mesa Airlines, SkyWest Airlines. That is an observation, not a timetable.
- What is the current time difference between Greenville and Houston?
- Houston is currently 1 hour behind Greenville.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.