Flight OddsAA3899 MSO → ORD
American Airlines · Missoula, MT to Chicago, IL · 64 flights observed, 2025-07-01 to 2025-10-05 · 1,332 mi
AA3899 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
92%
Median delay
-5 min
90th percentile
+7 min
Cancellation rate
2%
How often is AA3899 on time?
Across 64 flights on MSO → ORD from 2025-07-01 to 2025-10-05, AA3899 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +7 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 58 | 92% |
| 16-30 min | 1 | 2% |
| 31-60 min | 3 | 5% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 87% | +12 min |
| 2025-08 | 5 | 100% | -6 min |
| 2025-09 | 23 | 96% | -3 min |
| 2025-10 | 5 | 100% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 9 | 89% |
| Tue | 10 | 100% |
| Wed | 9 | 89% |
| Thu | 9 | 100% |
| Fri | 9 | 89% |
| Sat | 8 | 75% |
| Sun | 9 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…