Flight OddsUA4504 ORD → CHA
United Airlines · Chicago, IL to Chattanooga, TN · 192 flights observed, 2025-07-01 to 2026-05-19 · 501 mi
UA4504 covers more than one route in the data window — the stats below are for ORD → CHA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-13 min
90th percentile
+63 min
Cancellation rate
2%
How often is UA4504 on time?
Across 192 flights on ORD → CHA from 2025-07-01 to 2026-05-19, UA4504 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +63 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 146 | 78% |
| 16-30 min | 14 | 7% |
| 31-60 min | 8 | 4% |
| 61-120 min | 6 | 3% |
| 2+ hrs | 14 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 79% | +10 min |
| 2025-08 | 27 | 81% | -3 min |
| 2025-09 | 27 | 93% | -11 min |
| 2025-10 | 31 | 90% | -5 min |
| 2025-11 | 29 | 59% | +26 min |
| 2025-12 | 17 | 59% | +47 min |
| 2026-02 | 16 | 69% | +7 min |
| 2026-03 | 6 | 83% | +11 min |
| 2026-05 | 6 | 83% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 28 | 71% |
| Tue | 32 | 91% |
| Wed | 28 | 82% |
| Thu | 26 | 77% |
| Fri | 27 | 78% |
| Sat | 23 | 87% |
| Sun | 24 | 54% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…