Alaska Airlines is the most reliable airline on the SEA to STS route with a 82% on-time rate, compared to SkyWest Airlines at 73%. Based on 1,142 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SEA to STS
Seattle to Santa Rosa — airline reliability comparison
On-Time Rate by Airline
Alaska Airlines82%
SkyWest Airlines73%
SEA to STS Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Alaska AirlinesASBest | 82% | 1.1% | 43m | 1,142 |
| SkyWest AirlinesOOWorst | 73% | 0.3% | 51m | 447 |
Route Overview
80%
Overall On-Time
46m
Avg Delay
0.7%
Cancel Rate
1,628
Total Flights
Flying out of SEA? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.