Flight OddsUA4596 ORD → STL
United Airlines · Chicago, IL to St. Louis, MO · 53 flights observed, 2026-03-05 to 2026-04-29 · 258 mi
UA4596 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
66%
Median delay
-3 min
90th percentile
+155 min
Cancellation rate
11%
How often is UA4596 on time?
Across 53 flights on ORD → STL from 2026-03-05 to 2026-04-29, UA4596 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +155 min or later. 11% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 31 | 66% |
| 16-30 min | 2 | 4% |
| 31-60 min | 3 | 6% |
| 61-120 min | 3 | 6% |
| 2+ hrs | 8 | 17% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 21 | 67% | +35 min |
| 2026-04 | 26 | 65% | +41 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 86% |
| Tue | 4 | 50% |
| Wed | 8 | 75% |
| Thu | 7 | 43% |
| Fri | 6 | 67% |
| Sat | 8 | 88% |
| Sun | 7 | 43% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…