UA2278
United Airlines flight 2278 — Chicago (ORD) to Seattle (SEA)
On time
78%
Avg delay
~72 min
Cancelled
0.9%
UA2278 is fairly reliable, though delays happen. About 78% 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 | 18% | 0.0% | 71 min |
| 2026-07 | 63% | 3.2% | 97 min |
| 2026-06 | 24% | 0.0% | 82 min |
| 2026-06 | 77% | 0.0% | 97 min |
| 2026-05 | 19% | 0.0% | 66 min |
| 2026-05 | 80% | 3.2% | 133 min |
| 2026-04 | 28% | 3.3% | 61 min |
| 2026-04 | 83% | 3.3% | 34 min |
| 2026-03 | 82% | 0.0% | 38 min |
| 2026-03 | 93% | 3.2% | 53 min |
| 2026-02 | 64% | 0.0% | 90 min |
| 2026-02 | 59% | 0.0% | 80 min |
Top delay cause
late-arriving aircraft
Based on 1,834 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.