Flight OddsGRR → IAH United Airlines
United Airlines · Grand Rapids, MI to Houston, TX · 366 flights, 2025-07-01 to 2026-06-30 · aggregated across 12 flight numbers
On-time arrival
79%
Median delay
-8 min
90th percentile
+47 min
Cancellation rate
1%
How on-time is United Airlines from GRR to IAH?
Across every United Airlines flight number on GRR → IAH (366 flights, 2025-07-01 to 2026-06-30), 79% arrived within 15 minutes of schedule. Median arrival delay -8 min; the worst 10% ran +47 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 285 | 79% |
| 16-30 min | 22 | 6% |
| 31-60 min | 26 | 7% |
| 61-120 min | 16 | 4% |
| 2+ hrs | 13 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 67% | +23 min |
| 2025-08 | 31 | 68% | +9 min |
| 2025-09 | 30 | 100% | -19 min |
| 2025-10 | 31 | 87% | -11 min |
| 2025-11 | 30 | 83% | +1 min |
| 2025-12 | 31 | 74% | +10 min |
| 2026-01 | 30 | 67% | +18 min |
| 2026-02 | 28 | 93% | -14 min |
| 2026-03 | 29 | 90% | -4 min |
| 2026-04 | 30 | 77% | +16 min |
| 2026-05 | 32 | 81% | +12 min |
| 2026-06 | 30 | 60% | +20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 84% |
| Tue | 53 | 77% |
| Wed | 51 | 80% |
| Thu | 53 | 83% |
| Fri | 52 | 73% |
| Sat | 52 | 75% |
| Sun | 50 | 78% |
UA flight numbers on GRR → IAH
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…