UA664
United Airlines flight 664 — Las Vegas (LAS) to Chicago (ORD)
On time
84%
Avg delay
~75 min
Cancelled
1.3%
UA664 is a reliable flight. About 84% of departures arrive on time. When delays happen, the most common cause is airline operations.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 84% | 0.0% | 31 min |
| 2026-07 | 67% | 3.2% | 74 min |
| 2026-06 | 77% | 0.0% | 83 min |
| 2026-06 | 48% | 4.2% | 129 min |
| 2026-06 | 83% | 0.0% | 19 min |
| 2026-05 | 77% | 0.0% | 139 min |
| 2026-05 | 64% | 0.0% | 134 min |
| 2026-05 | 74% | 5.0% | 55 min |
| 2026-04 | 100% | 0.0% | 0 min |
| 2026-04 | 75% | 3.4% | 41 min |
| 2026-03 | 90% | 3.3% | 112 min |
| 2026-03 | 75% | 0.0% | 53 min |
Top delay cause
airline operations
Based on 2,195 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.