Flight OddsUA421 DEN → MKE
United Airlines · Denver, CO to Milwaukee, WI · 165 flights observed, 2025-07-01 to 2026-01-05 · 896 mi
UA421 covers more than one route in the data window — the stats below are for DEN → MKE, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
67%
Median delay
+4 min
90th percentile
+83 min
Cancellation rate
0%
How often is UA421 on time?
Across 165 flights on DEN → MKE from 2025-07-01 to 2026-01-05, UA421 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +83 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 110 | 67% |
| 16-30 min | 15 | 9% |
| 31-60 min | 17 | 10% |
| 61-120 min | 9 | 5% |
| 2+ hrs | 14 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 22% | +97 min |
| 2025-08 | 28 | 39% | +42 min |
| 2025-09 | 30 | 73% | +12 min |
| 2025-10 | 31 | 100% | -5 min |
| 2025-11 | 29 | 86% | +4 min |
| 2025-12 | 15 | 67% | +62 min |
| 2026-01 | 5 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 68% |
| Tue | 24 | 71% |
| Wed | 24 | 63% |
| Thu | 24 | 63% |
| Fri | 25 | 64% |
| Sat | 18 | 83% |
| Sun | 25 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…