Flight OddsUA1583 LAS → ORD
United Airlines · Las Vegas, NV to Chicago, IL · 248 flights observed, 2025-10-26 to 2026-06-30 · 1,514 mi
UA1583 covers more than one route in the data window — the stats below are for LAS → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-9 min
90th percentile
+28 min
Cancellation rate
0%
How often is UA1583 on time?
Across 248 flights on LAS → ORD from 2025-10-26 to 2026-06-30, UA1583 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +28 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 | 203 | 83% |
| 16-30 min | 18 | 7% |
| 31-60 min | 8 | 3% |
| 61-120 min | 8 | 3% |
| 2+ hrs | 8 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | -5 min |
| 2025-11 | 29 | 83% | +6 min |
| 2025-12 | 31 | 87% | -5 min |
| 2026-01 | 31 | 77% | +11 min |
| 2026-02 | 28 | 86% | -9 min |
| 2026-03 | 31 | 71% | +15 min |
| 2026-04 | 30 | 90% | -1 min |
| 2026-05 | 29 | 97% | -2 min |
| 2026-06 | 30 | 73% | +17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 81% |
| Tue | 35 | 91% |
| Wed | 35 | 71% |
| Thu | 34 | 82% |
| Fri | 35 | 89% |
| Sat | 34 | 91% |
| Sun | 36 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…