SkyWest Airlines is the most reliable airline on the SEA to MSO route with a 77% on-time rate, compared to Alaska Airlines at 72%. Based on 146 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SEA to MSO
Seattle to Missoula — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines77%
Alaska Airlines72%
SEA to MSO Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 77% | 0.0% | 45m | 146 |
| Alaska AirlinesASWorst | 72% | 0.6% | 44m | 995 |
Route Overview
75%
Overall On-Time
45m
Avg Delay
0.6%
Cancel Rate
1,141
Total Flights
Flying out of SEA? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.