Alaska Airlines is the most reliable airline on the PDX to SJC route with a 92% on-time rate, compared to Southwest Airlines at 84%. Based on 679 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PDX to SJC
Portland to San Jose — airline reliability comparison
On-Time Rate by Airline
Alaska Airlines92%
SkyWest Airlines88%
Spirit Airlines86%
Southwest Airlines84%
PDX to SJC Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Alaska AirlinesASBest | 92% | 0.4% | 62m | 679 |
| SkyWest AirlinesOO | 88% | 0.1% | 51m | 2,262 |
| Spirit AirlinesNK | 86% | 0.8% | 71m | 109 |
| Southwest AirlinesWNWorst | 84% | 0.6% | 53m | 4,791 |
Route Overview
86%
Overall On-Time
54m
Avg Delay
0.5%
Cancel Rate
7,866
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.