Flight OddsUnited Airlines · Chicago, IL to Colorado Springs, CO · 246 flights observed, 2025-07-01 to 2026-06-30 · 911 mi
UA4638 covers more than one route in the data window — the stats below are for ORD → COS, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA4638 on time?
Across 246 flights on ORD → COS from 2025-07-01 to 2026-06-30, UA4638 arrived within 15 minutes of schedule 61% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +73 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 143 | 61% |
| 16-30 min | 41 | 18% |
| 31-60 min | 21 | 9% |
| 61-120 min | 17 | 7% |
| 2+ hrs | 12 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 40% | +39 min |
| 2025-08 | 27 | 74% | +4 min |
| 2025-09 | 24 | 83% | -1 min |
| 2025-10 | 6 | 50% | +29 min |
| 2025-11 | 28 | 64% | +28 min |
| 2025-12 | 29 | 52% | +45 min |
| 2026-01 | 5 | 60% | +6 min |
| 2026-03 | 3 | 33% | +88 min |
| 2026-04 | 28 | 57% | +16 min |
| 2026-05 | 26 | 77% | +4 min |
| 2026-06 | 28 | 54% | +20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 32 | 56% |
| Tue | 35 | 60% |
| Wed | 32 | 66% |
| Thu | 32 | 59% |
| Fri | 35 | 54% |
| Sat | 31 | 61% |
| Sun | 37 | 70% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…