Flight OddsUA664 LAS → ORD
United Airlines · Las Vegas, NV to Chicago, IL · 352 flights observed, 2025-07-01 to 2026-06-30 · 1,514 mi
UA664 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
90%
Median delay
-14 min
90th percentile
+16 min
Cancellation rate
1%
How often is UA664 on time?
Across 352 flights on LAS → ORD from 2025-07-01 to 2026-06-30, UA664 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +16 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 313 | 90% |
| 16-30 min | 13 | 4% |
| 31-60 min | 11 | 3% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 94% | -5 min |
| 2025-08 | 30 | 93% | -10 min |
| 2025-09 | 30 | 97% | -10 min |
| 2025-10 | 31 | 90% | -12 min |
| 2025-11 | 29 | 83% | +33 min |
| 2025-12 | 30 | 97% | -11 min |
| 2026-01 | 30 | 87% | -7 min |
| 2026-02 | 28 | 96% | -18 min |
| 2026-03 | 28 | 89% | 0 min |
| 2026-04 | 21 | 100% | -13 min |
| 2026-05 | 31 | 77% | +21 min |
| 2026-06 | 30 | 77% | +11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 90% |
| Tue | 48 | 94% |
| Wed | 47 | 87% |
| Thu | 50 | 100% |
| Fri | 50 | 84% |
| Sat | 51 | 86% |
| Sun | 51 | 86% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…