Flight OddsUA4185 ORD → STL
United Airlines · Chicago, IL to St. Louis, MO · 225 flights observed, 2025-07-01 to 2026-02-11 · 258 mi
UA4185 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
61%
Median delay
+3 min
90th percentile
+111 min
Cancellation rate
3%
How often is UA4185 on time?
Across 225 flights on ORD → STL from 2025-07-01 to 2026-02-11, UA4185 arrived within 15 minutes of schedule 61% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +111 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 | 133 | 61% |
| 16-30 min | 15 | 7% |
| 31-60 min | 23 | 11% |
| 61-120 min | 32 | 15% |
| 2+ hrs | 15 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 45% | +62 min |
| 2025-08 | 30 | 73% | +21 min |
| 2025-09 | 30 | 73% | +7 min |
| 2025-10 | 31 | 84% | -2 min |
| 2025-11 | 27 | 44% | +63 min |
| 2025-12 | 29 | 55% | +40 min |
| 2026-01 | 29 | 45% | +29 min |
| 2026-02 | 11 | 73% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 30 | 67% |
| Tue | 33 | 73% |
| Wed | 33 | 70% |
| Thu | 31 | 68% |
| Fri | 31 | 45% |
| Sat | 30 | 60% |
| Sun | 30 | 43% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…