Flight OddsUA2666 ORD → DEN
United Airlines · Chicago, IL to Denver, CO · 158 flights observed, 2025-07-01 to 2026-06-30 · 888 mi
UA2666 covers more than one route in the data window — the stats below are for ORD → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
97%
Median delay
-16 min
90th percentile
+5 min
Cancellation rate
0%
How often is UA2666 on time?
Across 158 flights on ORD → DEN from 2025-07-01 to 2026-06-30, UA2666 arrived within 15 minutes of schedule 97% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +5 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 | 153 | 97% |
| 16-30 min | 3 | 2% |
| 31-60 min | 2 | 1% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 90% | -11 min |
| 2025-08 | 31 | 97% | -15 min |
| 2025-09 | 30 | 100% | -17 min |
| 2025-10 | 25 | 100% | -10 min |
| 2026-05 | 11 | 100% | -11 min |
| 2026-06 | 30 | 97% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 22 | 100% |
| Tue | 23 | 91% |
| Wed | 22 | 100% |
| Thu | 23 | 96% |
| Fri | 23 | 96% |
| Sat | 23 | 100% |
| Sun | 22 | 95% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…