Flight OddsUA4030 GSP → IAH
United Airlines · Greer, SC to Houston, TX · 134 flights observed, 2025-12-18 to 2026-05-20 · 837 mi
UA4030 covers more than one route in the data window — the stats below are for GSP → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-16 min
90th percentile
+13 min
Cancellation rate
4%
How often is UA4030 on time?
Across 134 flights on GSP → IAH from 2025-12-18 to 2026-05-20, UA4030 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +13 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 118 | 92% |
| 16-30 min | 2 | 2% |
| 31-60 min | 5 | 4% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 3 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 1 | 100% | -38 min |
| 2026-01 | 22 | 91% | -15 min |
| 2026-02 | 26 | 96% | -29 min |
| 2026-03 | 30 | 90% | +4 min |
| 2026-04 | 30 | 100% | -11 min |
| 2026-05 | 19 | 79% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 18 | 100% |
| Tue | 19 | 79% |
| Wed | 19 | 95% |
| Thu | 20 | 90% |
| Fri | 19 | 89% |
| Sat | 17 | 94% |
| Sun | 16 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…