Greenville to Houston (GSP-IAH): nonstop flights and who flies them

United Airlines flies nonstop between Greenville (GSP) and Houston (IAH), roughly 23 times a week. The timetable below shows the nonstop scheduled at 2h 33m to 2h 58m for the 836 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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23
Flights a week, 4-week average
2h 33m to 2h 58m
Scheduled flight time
836 mi
Nonstop distance
Free
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Greenville to Houston flight schedule

Scheduled nonstop departures for GSP to IAH starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Greenville (GSP) to Houston (IAH)
Date Flight Airline Departs GSP Arrives IAH Duration Aircraft
UA 4014United Airlines07:0008:442h 44mEmbraer E175
UA 4059United Airlines17:1518:552h 40mEmbraer E175
UA 4014United Airlines07:0008:442h 44mEmbraer E175
UA 4059United Airlines17:2719:102h 43mEmbraer E175
UA 3993United Airlines06:4908:452h 56mEmbraer E175
UA 1861United Airlines07:0008:332h 33mBoeing 737-700
UA 4028United Airlines17:1219:102h 58mEmbraer E175
UA 1911United Airlines17:1518:482h 33mBoeing 737-700
UA 3993United Airlines06:4908:452h 56mEmbraer E175
UA 1861United Airlines07:0008:332h 33mBoeing 737-700
UA 4028United Airlines17:1219:102h 58mEmbraer E175
UA 1911United Airlines17:1518:482h 33mBoeing 737-700
UA 3993United Airlines06:4908:452h 56mEmbraer E175
UA 1861United Airlines07:0008:332h 33mBoeing 737-700
UA 4028United Airlines17:1219:102h 58mEmbraer E175
UA 1911United Airlines17:1518:482h 33mBoeing 737-700
UA 3993United Airlines06:4908:452h 56mEmbraer E175
UA 1861United Airlines07:0008:332h 33mBoeing 737-700
UA 4028United Airlines17:1219:102h 58mEmbraer E175
UA 1911United Airlines17:1518:482h 33mBoeing 737-700
UA 3993United Airlines06:4908:452h 56mEmbraer E175
UA 1861United Airlines07:0008:332h 33mBoeing 737-700
UA 4028United Airlines17:1219:102h 58mEmbraer E175
UA 1911United Airlines17:1518:482h 33mBoeing 737-700

Showing all 24 scheduled GSP to IAH departures across 7 days with service, starting October 23, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every GSP to IAH date on the interactive map

Aircraft on the Greenville to Houston nonstop

United Airlines flies the departures in the schedule table on this page with the Embraer E175 and the Boeing 737-700. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full GSP to IAH nonstop schedule

This page carries the full GSP to IAH nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each GSP to IAH nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See GSP to IAH on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Greenville to Houston nonstop

Carriers operating GSP to IAH nonstop in the current schedule.

See GSP to IAH on the interactive map →

Frequently asked questions about GSP to IAH

How long is the flight from Greenville (GSP) to Houston (IAH)?
Scheduled flight times from Greenville (GSP) to Houston (IAH) run from 2h 33m to 2h 58m across the departures in the schedule table on this page. The nonstop covers about 836 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from GSP to IAH?
United Airlines is currently the only airline flying GSP to IAH nonstop. 2LNR doesn't show award or upgrade space for it on GSP to IAH, so this page carries the schedule rather than a space claim.
How many flights a week are there from GSP to IAH?
About 23 nonstop flights a week run between Greenville (GSP) and Houston (IAH) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from GSP to IAH depart?
Scheduled GSP to IAH nonstops in the next 7 days with service leave between 06:49 and 17:27, local time at Greenville. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate GSP to IAH nonstop?
In the schedule table on this page, GSP to IAH nonstops fly as UA 1861, UA 1911, UA 3993, UA 4014, UA 4028, and UA 4059 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on GSP to IAH?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on GSP to IAH. The page carries the full GSP to IAH nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full GSP to IAH nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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