UA1803
United Airlines flight 1803 — Chicago (ORD) to Denver (DEN)
On time
87%
Avg delay
~67 min
Cancelled
0.8%
UA1803 is a reliable flight. About 87% of departures arrive on time. When delays happen, the most common cause is air traffic / NAS.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 94% | 0.0% | 292 min |
| 2026-06 | 74% | 4.2% | 107 min |
| 2026-06 | 79% | 0.0% | 32 min |
| 2026-06 | 100% | 0.0% | 0 min |
| 2026-06 | 97% | 0.0% | 24 min |
| 2026-05 | 73% | 0.0% | 75 min |
| 2026-05 | 97% | 0.0% | 42 min |
| 2026-05 | 87% | 0.0% | 88 min |
| 2026-04 | 93% | 0.0% | 22 min |
| 2026-04 | 86% | 6.7% | 81 min |
| 2026-03 | 75% | 0.0% | 67 min |
| 2026-03 | 73% | 3.2% | 65 min |
Top delay cause
air traffic / NAS
Based on 1,929 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.