Flight OddsUA4420 TYS → ORD
United Airlines · Knoxville, TN to Chicago, IL · 29 flights observed, 2025-10-28 to 2025-12-01 · 475 mi
UA4420 covers more than one route in the data window — the stats below are for TYS → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
54%
Median delay
+9 min
90th percentile
+109 min
Cancellation rate
10%
How often is UA4420 on time?
Across 29 flights on TYS → ORD from 2025-10-28 to 2025-12-01, UA4420 arrived within 15 minutes of schedule 54% of the time. The median arrival delay was +9 min, and the worst 10% of flights arrived +109 min or later. 10% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 14 | 54% |
| 16-30 min | 2 | 8% |
| 31-60 min | 2 | 8% |
| 61-120 min | 6 | 23% |
| 2+ hrs | 2 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 2 | 50% | +19 min |
| 2025-11 | 23 | 57% | +86 min |
| 2025-12 | 1 | 0% | +100 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 5 | 80% |
| Wed | 5 | 40% |
| Thu | 3 | 67% |
| Fri | 4 | 25% |
| Sat | 1 | 100% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…