Flight OddsIAH → ORD United Airlines
United Airlines · Houston, TX to Chicago, IL · 4,007 flights, 2025-07-01 to 2026-06-30 · aggregated across 55 flight numbers
On-time arrival
79%
Median delay
-5 min
90th percentile
+46 min
Cancellation rate
1%
How on-time is United Airlines from IAH to ORD?
Across every United Airlines flight number on IAH → ORD (4,007 flights, 2025-07-01 to 2026-06-30), 79% arrived within 15 minutes of schedule. Median arrival delay -5 min; the worst 10% ran +46 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 3,116 | 79% |
| 16-30 min | 309 | 8% |
| 31-60 min | 230 | 6% |
| 61-120 min | 168 | 4% |
| 2+ hrs | 137 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 325 | 69% | +14 min |
| 2025-08 | 331 | 78% | +10 min |
| 2025-09 | 329 | 89% | -7 min |
| 2025-10 | 335 | 82% | +2 min |
| 2025-11 | 314 | 73% | +17 min |
| 2025-12 | 352 | 81% | +7 min |
| 2026-01 | 328 | 82% | +2 min |
| 2026-02 | 296 | 89% | -4 min |
| 2026-03 | 331 | 72% | +22 min |
| 2026-04 | 322 | 80% | +10 min |
| 2026-05 | 349 | 79% | +3 min |
| 2026-06 | 348 | 74% | +17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 583 | 80% |
| Tue | 555 | 81% |
| Wed | 550 | 80% |
| Thu | 568 | 82% |
| Fri | 575 | 78% |
| Sat | 547 | 77% |
| Sun | 582 | 73% |
UA flight numbers on IAH → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…