Flight OddsUA636 MSO → ORD
United Airlines · Missoula, MT to Chicago, IL · 41 flights observed, 2026-05-21 to 2026-06-30 · 1,332 mi
UA636 covers more than one route in the data window — the stats below are for MSO → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-11 min
90th percentile
+20 min
Cancellation rate
7%
How often is UA636 on time?
Across 41 flights on MSO → ORD from 2026-05-21 to 2026-06-30, UA636 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +20 min or later. 7% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 32 | 86% |
| 16-30 min | 2 | 5% |
| 31-60 min | 1 | 3% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 2 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 9 | 100% | -14 min |
| 2026-06 | 28 | 82% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 5 | 80% |
| Wed | 5 | 60% |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | 6 | 100% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…