Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
UA 4038 · Greenville (GSP) → Houston (IAH)
Sold by United, flown by Mesa. Still flying: 55 of the last 56 days (Daily).
Arrives on time80%within 15 minutes, of 71 flights
Cancelled0.0%of scheduled flights
An hour or more late11%of flights that operated
When late, on average93 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Houston is 1 h behind Greenville).
- Leaves GSP
- 17:10
- Arrives IAH
- 18:45
- Flight time
- 2h 35m
- Days flown, last 8 weeks
- 55 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at GSP
All flights leaving Greenville (GSP) at 5–6 pm, wherever they’re going: 74% left within 15 minutes and 3.8% were cancelled (1,417 flights in the year). Other United flights on this route →
Upcoming forecasts
This flight isn’t in our published forecasts for the next few days.