SkyWest Airlines is the most reliable airline on the PDX to SAN route with a 89% on-time rate, compared to Southwest Airlines at 73%. Based on 205 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PDX to SAN
Portland to San Diego — airline reliability comparison
On-Time Rate by Airline
SkyWest Airlines89%
Alaska Airlines82%
Spirit Airlines76%
Southwest Airlines73%
PDX to SAN Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 89% | 0.0% | 39m | 205 |
| Alaska AirlinesAS | 82% | 1.3% | 46m | 5,449 |
| Spirit AirlinesNK | 76% | 4.4% | 73m | 111 |
| Southwest AirlinesWNWorst | 73% | 0.0% | 29m | 149 |
Route Overview
82%
Overall On-Time
46m
Avg Delay
1.3%
Cancel Rate
6,092
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.