Flight Check

Best Airline: SJC to LAX

San Jose to Los Angeles — airline reliability comparison

Delta Air Lines is the most reliable airline on the SJC to LAX route with a 92% on-time rate, compared to Frontier Airlines at 79%. Based on 555 flights tracked.

This route involves high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Delta Air Lines92%
SkyWest Airlines91%
Spirit Airlines88%
Southwest Airlines82%
Frontier Airlines79%

SJC to LAX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest92%2.4%55m555
SkyWest AirlinesOO91%0.1%65m10,219
Spirit AirlinesNK88%1.5%56m529
Southwest AirlinesWN82%0.3%50m6,561
Frontier AirlinesF9Worst79%2.5%73m282

Route Overview

88%
Overall On-Time
56m
Avg Delay
0.3%
Cancel Rate
18,182
Total Flights
SJC to LAX Route DetailsReturn: LAX to SJC
SJC AirportLAX Airport

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Data last updated October 2026. Source: Bureau of Transportation Statistics.