SkyWest Airlines is the most reliable airline on the SEA to SJC route with a 87% on-time rate, compared to Southwest Airlines at 80%. Based on 5,003 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SEA to SJC
Seattle to San Jose — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines87%
Delta Air Lines86%
Alaska Airlines81%
Southwest Airlines80%
SEA to SJC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 87% | 0.1% | 53m | 5,003 |
| Delta Air LinesDL | 86% | 2.9% | 88m | 322 |
| Alaska AirlinesAS | 81% | 1.4% | 46m | 6,950 |
| Southwest AirlinesWNWorst | 80% | 0.3% | 48m | 4,118 |
Route Overview
83%
Overall On-Time
49m
Avg Delay
0.7%
Cancel Rate
16,408
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.