Flight OddsUA1563 IAH → ONT
United Airlines · Houston, TX to Ontario, CA · 323 flights observed, 2025-07-01 to 2026-06-30 · 1,334 mi
UA1563 covers more than one route in the data window — the stats below are for IAH → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-5 min
90th percentile
+54 min
Cancellation rate
0%
How often is UA1563 on time?
Across 323 flights on IAH → ONT from 2025-07-01 to 2026-06-30, UA1563 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +54 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 250 | 78% |
| 16-30 min | 20 | 6% |
| 31-60 min | 22 | 7% |
| 61-120 min | 17 | 5% |
| 2+ hrs | 13 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 60% | +31 min |
| 2025-08 | 18 | 67% | +31 min |
| 2025-09 | 6 | 83% | -4 min |
| 2025-10 | 31 | 68% | +11 min |
| 2025-11 | 29 | 66% | +20 min |
| 2025-12 | 30 | 83% | -3 min |
| 2026-01 | 31 | 94% | -11 min |
| 2026-02 | 28 | 89% | -12 min |
| 2026-03 | 28 | 79% | +1 min |
| 2026-04 | 30 | 87% | +4 min |
| 2026-05 | 31 | 84% | +4 min |
| 2026-06 | 30 | 73% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 47 | 77% |
| Tue | 44 | 84% |
| Wed | 46 | 76% |
| Thu | 46 | 74% |
| Fri | 46 | 80% |
| Sat | 47 | 77% |
| Sun | 46 | 76% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…