Flight OddsUA4437 ORD → TYS
United Airlines · Chicago, IL to Knoxville, TN · 29 flights observed, 2025-10-28 to 2025-12-01 · 475 mi
UA4437 covers more than one route in the data window — the stats below are for ORD → TYS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
64%
Median delay
0 min
90th percentile
+117 min
Cancellation rate
3%
How often is UA4437 on time?
Across 29 flights on ORD → TYS from 2025-10-28 to 2025-12-01, UA4437 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +117 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 64% |
| 16-30 min | 2 | 7% |
| 31-60 min | 3 | 11% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 3 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 2 | 100% | +5 min |
| 2025-11 | 25 | 64% | +30 min |
| 2025-12 | 1 | 0% | +112 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 20% |
| Tue | 5 | 100% |
| Wed | 5 | 60% |
| Thu | 3 | 67% |
| Fri | 4 | 75% |
| Sat | 1 | 100% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…