Flight OddsAS2478 SEA → MSO
Alaska Airlines · Seattle, WA to Missoula, MT · 118 flights observed, 2025-07-01 to 2026-05-11 · 389 mi
AS2478 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
88%
Median delay
-4 min
90th percentile
+19 min
Cancellation rate
3%
How often is AS2478 on time?
Across 118 flights on SEA → MSO from 2025-07-01 to 2026-05-11, AS2478 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +19 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 101 | 88% |
| 16-30 min | 7 | 6% |
| 31-60 min | 2 | 2% |
| 61-120 min | 5 | 4% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 79% | +14 min |
| 2025-08 | 29 | 86% | +6 min |
| 2025-09 | 24 | 88% | -4 min |
| 2025-10 | 13 | 100% | -13 min |
| 2026-04 | 9 | 100% | -15 min |
| 2026-05 | 11 | 91% | -14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 17 | 94% |
| Tue | 14 | 79% |
| Wed | 16 | 88% |
| Thu | 18 | 89% |
| Fri | 17 | 100% |
| Sat | 15 | 93% |
| Sun | 18 | 72% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…