UA630
United Airlines flight 630 — Buffalo (BUF) to Chicago (ORD)
On time
63%
Avg delay
~69 min
Cancelled
1.5%
UA630 runs late more often than average. About 63% of departures arrive on time. When delays happen, the most common cause is late-arriving aircraft.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 64% | 6.7% | 72 min |
| 2026-07 | 29% | 9.7% | 112 min |
| 2026-06 | 83% | 0.0% | 65 min |
| 2026-06 | 71% | 0.0% | 84 min |
| 2026-06 | 34% | 3.3% | 75 min |
| 2026-05 | 58% | 5.0% | 76 min |
| 2026-05 | 73% | 0.0% | 32 min |
| 2026-05 | 82% | 0.0% | 19 min |
| 2026-04 | 55% | 3.3% | 93 min |
| 2026-04 | 62% | 0.0% | 57 min |
| 2026-04 | 100% | 0.0% | 0 min |
| 2026-03 | 56% | 10.0% | 68 min |
Top delay cause
late-arriving aircraft
Based on 1,827 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.