Southwest Airlines is the most reliable airline on the COS to SAN route with a 66% on-time rate. Based on 172 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: COS to SAN
Colorado Springs to San Diego — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines66%
COS to SAN Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 66% | 0.0% | 65m | 172 |
Route Overview
66%
Overall On-Time
64m
Avg Delay
0%
Cancel Rate
172
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.