GSP → IAHGreenville/Greer/Spartanburg to Houston

live

Direct flights from Greenville/Greer/Spartanburg (GSP) to Houston (IAH): 7 nonstop departures observed each week across 1 airline. The median arrival is 6 minutes early. No cancellations were recorded across the 3 tracked flights. The nonstop covers 1,346 km, an estimated 2 hours 14 minutes in the air. Measured by Pro Flight Search from live flight boards at Greenville/Greer/Spartanburg and Houston. Updated 21 October 2026 at 02:02 UTC.

Today, GSP → IAH

Wed 21 Oct · local times
  1. · UA4014 On schedule IAH 08:44scheduled
  2. · UA4059 On schedule IAH 18:55scheduled

Checked IAH board 20:22

GSP Greenville/Greer/Spartanburg tracking
IAH Houston smooth · +0
1,346 km · ~2h 14m est.
dep bank 08:44–18:557x weekly
Running clean · 1 airline · 7x weekly · nonstop
100 / 100

route health from live GSP and IAH delay boards

Median arrival delay is −6 min. 0 of 3 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−6 minacross the last 3 operated legs
Flight time~2h 14mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
United AirlinesUA

Flights UA4014 08:44 daily · UA4059 18:55 Mo Tu We Th Fr Su

History

operated legs · board outcomes
10-20UA4014arrived−31
10-20UA4059arrived−6
10-19UA4014arrived+319

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
GSPGreenville/Greer/Spartanburg tracking Full GSP delay board →
IAHHouston +0 min smooth 🌤 few clouds · ENE 5 kt Full IAH delay board →

How the Greenville/Greer/Spartanburg to Houston route actually runs

Pro Flight Search records official board updates for nonstop GSP to IAH flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Greenville/Greer/Spartanburg (GSP) to Houston (IAH) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/GSP-IAH
How we measure this →

GSP to IAH questions

Is GSP–IAH running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from GSP to IAH?

Great-circle distance is 1,346 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 125–145 min gate-to-gate on this route.

How often does GSP–IAH fly?

United Airlines runs the route with about 13 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at GSP and arrival-side delay at IAH, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.