Flight OddsUA4581 ORD → DAY
United Airlines · Chicago, IL to Dayton, OH · 52 flights observed, 2025-10-26 to 2025-12-17 · 240 mi
UA4581 covers more than one route in the data window — the stats below are for ORD → DAY, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
+6 min
90th percentile
+108 min
Cancellation rate
8%
How often is UA4581 on time?
Across 52 flights on ORD → DAY from 2025-10-26 to 2025-12-17, UA4581 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +108 min or later. 8% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 33 | 69% |
| 16-30 min | 2 | 4% |
| 31-60 min | 4 | 8% |
| 61-120 min | 5 | 10% |
| 2+ hrs | 4 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | +19 min |
| 2025-11 | 26 | 73% | +23 min |
| 2025-12 | 16 | 56% | +44 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 43% |
| Tue | 8 | 88% |
| Wed | 8 | 63% |
| Thu | 6 | 83% |
| Fri | 7 | 57% |
| Sat | 6 | 67% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…