Flight Check

Best Airline: DEN to LAX

Denver to Los Angeles — airline reliability comparison

SkyWest Airlines is the most reliable airline on the DEN to LAX route with a 84% on-time rate, compared to Spirit Airlines at 72%. Based on 3,648 flights tracked.

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

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

SkyWest Airlines84%
United Airlines81%
Delta Air Lines81%
Frontier Airlines74%
Southwest Airlines73%
Spirit Airlines72%

DEN to LAX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
SkyWest AirlinesOOBest84%0.5%77m3,648
United AirlinesUA81%0.7%66m11,203
Delta Air LinesDL81%1.1%82m3,312
Frontier AirlinesF974%1.5%65m1,582
Southwest AirlinesWN73%0.9%51m7,399
Spirit AirlinesNKWorst72%3.4%63m119

Route Overview

79%
Overall On-Time
65m
Avg Delay
0.8%
Cancel Rate
27,269
Total Flights
DEN to LAX Route DetailsReturn: LAX to DEN
DEN AirportLAX Airport

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