Flight OddsUA3525 ORD → STL
United Airlines · Chicago, IL to St. Louis, MO · 50 flights observed, 2025-10-26 to 2025-12-17 · 258 mi
UA3525 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
76%
Median delay
-5 min
90th percentile
+55 min
Cancellation rate
0%
How often is UA3525 on time?
Across 50 flights on ORD → STL from 2025-10-26 to 2025-12-17, UA3525 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +55 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 | 38 | 76% |
| 16-30 min | 2 | 4% |
| 31-60 min | 6 | 12% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 3 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 100% | -12 min |
| 2025-11 | 27 | 81% | +12 min |
| 2025-12 | 17 | 59% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | 8 | 88% |
| Wed | 8 | 75% |
| Thu | 6 | 83% |
| Fri | 7 | 86% |
| Sat | 5 | 80% |
| Sun | 8 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…