Flight OddsUA4590 ORD → MDT
United Airlines · Chicago, IL to Harrisburg, PA · 103 flights observed, 2025-07-01 to 2025-12-25 · 594 mi
UA4590 covers more than one route in the data window — the stats below are for ORD → MDT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
73%
Median delay
-5 min
90th percentile
+86 min
Cancellation rate
1%
How often is UA4590 on time?
Across 103 flights on ORD → MDT from 2025-07-01 to 2025-12-25, UA4590 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +86 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 74 | 73% |
| 16-30 min | 7 | 7% |
| 31-60 min | 8 | 8% |
| 61-120 min | 4 | 4% |
| 2+ hrs | 9 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 69% | +22 min |
| 2025-08 | 27 | 74% | -1 min |
| 2025-09 | 22 | 77% | +13 min |
| 2025-10 | 23 | 70% | +25 min |
| 2025-12 | 1 | 100% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 60% |
| Tue | 11 | 82% |
| Wed | 17 | 76% |
| Thu | 18 | 78% |
| Fri | 14 | 79% |
| Sat | 16 | 63% |
| Sun | 16 | 69% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…