Flight OddsUA3597 STL → ORD
United Airlines · St. Louis, MO to Chicago, IL · 49 flights observed, 2025-10-26 to 2025-12-16 · 258 mi
UA3597 covers more than one route in the data window — the stats below are for STL → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
65%
Median delay
+9 min
90th percentile
+51 min
Cancellation rate
4%
How often is UA3597 on time?
Across 49 flights on STL → ORD from 2025-10-26 to 2025-12-16, UA3597 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was +9 min, and the worst 10% of flights arrived +51 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 30 | 65% |
| 16-30 min | 6 | 13% |
| 31-60 min | 6 | 13% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 3 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 50% | +19 min |
| 2025-11 | 24 | 79% | +12 min |
| 2025-12 | 16 | 50% | +32 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 71% |
| Tue | 8 | 63% |
| Wed | 7 | 57% |
| Thu | 6 | 67% |
| Fri | 7 | 86% |
| Sat | 4 | 50% |
| Sun | 7 | 57% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…