Greenville/Greer/Spartanburg (GSP) to Houston (IAH)
Flight time
≈ 2h 28m
Bearing
250° W
Greenville/Greer/Spartanburg (GSP) to Houston (IAH) is 836 miles (1,346 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies GSP–IAH
Filed traffic dataIn July 2026, Mesa Airlines was the only carrier flying nonstop GSP–IAH; the Embraer E175 was the most common aircraft at 100% of departures; flights ran 90% full.
Departures
122
July 2026
Seats
8,924
both directions
Passengers
7,997
both directions
Load factor
89.6%
RPM ÷ ASM
Who flies GSP–IAH?
Mesa Airlines was the only carrier to fly nonstop GSP–IAH in July 2026 (122 departures).
- YV
122 departures · 8,924 seats
Share of departures100.0%89.6%
Load
What plane flies GSP–IAH?
In July 2026, the Embraer E175 flew 100% of GSP–IAH departures.
- Embraer E175
122 departures · 89.6% load
100.0%
How has GSP–IAH traffic changed?
Nonstop GSP–IAH departures rose from 108 in August 2025 to 122 in July 2026.
Monthly nonstop GSP–IAH traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
108 departures · 6,718 passengers
85.2%
Load
September 2025
104 departures · 6,546 passengers
84.5%
Load
October 2025
117 departures · 7,808 passengers
89.3%
Load
November 2025
112 departures · 6,730 passengers
80.7%
Load
December 2025
111 departures · 7,052 passengers
84.8%
Load
January 2026
97 departures · 5,853 passengers
82.0%
Load
February 2026
89 departures · 5,544 passengers
86.3%
Load
March 2026
111 departures · 6,500 passengers
79.7%
Load
April 2026
120 departures · 7,100 passengers
81.0%
Load
May 2026
121 departures · 7,499 passengers
84.8%
Load
June 2026
120 departures · 7,937 passengers
90.6%
Load
July 2026
122 departures · 7,997 passengers
89.6%
Load
By direction
Each direction is filed separately — they rarely match.
GSP → IAH
90.9% full
61 departures · 4,055 passengers
IAH → GSP
88.3% full
61 departures · 3,942 passengers
Nonstop GSP–IAH traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Greenville/Greer/Spartanburg
US
Greenville-Spartanburg International Airport
Coordinates
34.90°N, 82.22°W
Hemisphere
N · W
Frequently asked
How far is Greenville/Greer/Spartanburg (GSP) from Houston (IAH)?
GSP to IAH is 836 miles (1,346 km / 727 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from GSP to IAH?
A nonstop covers the 836-mile great-circle distance in roughly 2h 28m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies GSP–IAH?
In July 2026, the Embraer E175 flew the largest share of departures (100.0%).
What mileage do I earn flying GSP–IAH?
Distance-based programs credit off the 836-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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