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

United Airlines flies nonstop between Houston (IAH) and Greenville (GSP), roughly 19 times a week. The timetable below shows the nonstop scheduled at 2h 14m to 2h 24m 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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19
Flights a week, 4-week average
2h 14m to 2h 24m
Scheduled flight time
836 mi
Nonstop distance
Free
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Houston to Greenville flight schedule

Scheduled nonstop departures for IAH to GSP starting October 21, 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 Houston (IAH) to Greenville (GSP)
Date Flight Airline Departs IAH Arrives GSP Duration Aircraft
UA 4060United Airlines12:2515:492h 24mEmbraer E175
UA 6124United Airlines18:3521:582h 23mEmbraer E175
UA 4060United Airlines12:2515:492h 24mEmbraer E175
UA 6124United Airlines18:3521:582h 23mEmbraer E175
UA 4060United Airlines12:2515:492h 24mEmbraer E175
UA 6124United Airlines18:3521:582h 23mEmbraer E175
UA 4060United Airlines12:2515:492h 24mEmbraer E175
UA 6124United Airlines18:3521:582h 23mEmbraer E175
UA 1586United Airlines12:0015:182h 18mBoeing 737-700
UA 4004United Airlines13:1416:282h 14mEmbraer E175
UA 2690United Airlines18:2821:462h 18mBoeing 737-700
UA 4071United Airlines18:3521:542h 19mEmbraer E175
UA 1586United Airlines12:0015:182h 18mBoeing 737-700
UA 4004United Airlines13:1416:282h 14mEmbraer E175
UA 4071United Airlines18:3521:542h 19mEmbraer E175
UA 4004United Airlines13:1416:312h 17mEmbraer E175
UA 2690United Airlines18:2821:462h 18mBoeing 737-700
UA 4071United Airlines18:3521:542h 19mEmbraer E175

Showing all 18 scheduled IAH to GSP departures across 7 days with service, starting October 21, 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 IAH to GSP date on the interactive map

Aircraft on the Houston to Greenville 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 IAH to GSP nonstop schedule

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

See the schedule

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

Plan on the map

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

Airlines flying Houston to Greenville nonstop

Carriers operating IAH to GSP nonstop in the current schedule.

See IAH to GSP on the interactive map →

Frequently asked questions about IAH to GSP

How long is the flight from Houston (IAH) to Greenville (GSP)?
Scheduled flight times from Houston (IAH) to Greenville (GSP) run from 2h 14m to 2h 24m 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 IAH to GSP?
United Airlines is currently the only airline flying IAH to GSP nonstop. 2LNR doesn't show award or upgrade space for it on IAH to GSP, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAH to GSP?
About 19 nonstop flights a week run between Houston (IAH) and Greenville (GSP) 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 IAH to GSP depart?
Scheduled IAH to GSP nonstops in the next 7 days with service leave between 12:00 and 18:35, local time at Houston. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAH to GSP nonstop?
In the schedule table on this page, IAH to GSP nonstops fly as UA 1586, UA 2690, UA 4004, UA 4060, UA 4071, and UA 6124 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAH to GSP?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAH to GSP. The page carries the full IAH to GSP nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAH to GSP 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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