Flight OddsAS139 SEA → MSO
Alaska Airlines · Seattle, WA to Missoula, MT · 70 flights observed, 2026-01-07 to 2026-03-17 · 389 mi
AS139 covers more than one route in the data window — the stats below are for SEA → MSO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-17 min
90th percentile
+14 min
Cancellation rate
1%
How often is AS139 on time?
Across 70 flights on SEA → MSO from 2026-01-07 to 2026-03-17, AS139 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +14 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 63 | 91% |
| 16-30 min | 4 | 6% |
| 31-60 min | 1 | 1% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 92% | -12 min |
| 2026-02 | 28 | 96% | -13 min |
| 2026-03 | 17 | 82% | -5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 90% |
| Tue | 10 | 90% |
| Wed | 9 | 100% |
| Thu | 10 | 80% |
| Fri | 10 | 90% |
| Sat | 10 | 90% |
| Sun | 10 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…