Flight OddsUA4397 ORD → SDF
United Airlines · Chicago, IL to Louisville, KY · 30 flights observed, 2025-11-01 to 2025-12-01 · 286 mi
UA4397 covers more than one route in the data window — the stats below are for ORD → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
+3 min
90th percentile
+80 min
Cancellation rate
23%
How often is UA4397 on time?
Across 30 flights on ORD → SDF from 2025-11-01 to 2025-12-01, UA4397 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +80 min or later. 23% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 74% |
| 16-30 min | 2 | 9% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 9% |
| 2+ hrs | 2 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 23 | 74% | +37 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 3 | 100% |
| Wed | 4 | 50% |
| Thu | 2 | 100% |
| Fri | 3 | 67% |
| Sat | 4 | 75% |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…