Flight OddsUA3478 MDT → ORD
United Airlines · Harrisburg, PA to Chicago, IL · 37 flights observed, 2025-10-26 to 2025-12-01 · 594 mi
UA3478 covers more than one route in the data window — the stats below are for MDT → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-11 min
90th percentile
+20 min
Cancellation rate
0%
How often is UA3478 on time?
Across 37 flights on MDT → ORD from 2025-10-26 to 2025-12-01, UA3478 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +20 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 | 33 | 89% |
| 16-30 min | 1 | 3% |
| 31-60 min | 2 | 5% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 100% | -19 min |
| 2025-11 | 30 | 87% | +2 min |
| 2025-12 | 1 | 100% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 100% |
| Tue | 5 | 100% |
| Wed | 5 | 100% |
| Thu | 5 | 80% |
| Fri | 5 | 100% |
| Sat | 5 | 80% |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…