Flight OddsUA2138 BZN → ORD
United Airlines · Bozeman, MT to Chicago, IL · 86 flights observed, 2025-07-01 to 2025-09-24 · 1,185 mi
UA2138 covers more than one route in the data window — the stats below are for BZN → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
93%
Median delay
-18 min
90th percentile
+7 min
Cancellation rate
6%
How often is UA2138 on time?
Across 86 flights on BZN → ORD from 2025-07-01 to 2025-09-24, UA2138 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -18 min, and the worst 10% of flights arrived +7 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 75 | 93% |
| 16-30 min | 3 | 4% |
| 31-60 min | 1 | 1% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 97% | -16 min |
| 2025-08 | 28 | 89% | -11 min |
| 2025-09 | 24 | 92% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 100% |
| Tue | 12 | 100% |
| Wed | 13 | 85% |
| Thu | 11 | 100% |
| Fri | 11 | 91% |
| Sat | 12 | 83% |
| Sun | 11 | 91% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…