Alaska Airlines is the most reliable airline on the SAT to SEA route with a 75% on-time rate. Based on 2,043 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SAT to SEA
San Antonio to Seattle — airline reliability comparison
On-Time Rate by Airline
Alaska Airlines75%
SAT to SEA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Alaska AirlinesASBest | 75% | 0.7% | 50m | 2,043 |
Route Overview
75%
Overall On-Time
50m
Avg Delay
0.6%
Cancel Rate
2,043
Total Flights
Flying out of SAT? 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.