Flight OddsUA4479 ORD → STL
United Airlines · Chicago, IL to St. Louis, MO · 14 flights observed, 2025-07-05 to 2025-08-17 · 258 mi
UA4479 covers more than one route in the data window — the stats below are for ORD → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-12 min
90th percentile
+78 min
Cancellation rate
0%
How often is UA4479 on time?
Across 14 flights on ORD → STL from 2025-07-05 to 2025-08-17, UA4479 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +78 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 | 12 | 86% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 7% |
| 2+ hrs | 1 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 8 | 75% | +36 min |
| 2025-08 | 6 | 100% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 7 | 71% |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…