Flight Check

Best Airline: STL to LAX

St. Louis to Los Angeles — airline reliability comparison

American Airlines is the most reliable airline on the STL to LAX route with a 78% on-time rate, compared to Southwest Airlines at 75%. Based on 831 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

American Airlines78%
SkyWest Airlines77%
Southwest Airlines75%

STL to LAX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
American AirlinesAABest78%1.2%110m831
SkyWest AirlinesOO77%0.7%99m410
Southwest AirlinesWNWorst75%0.4%48m2,608

Route Overview

76%
Overall On-Time
69m
Avg Delay
0.6%
Cancel Rate
3,855
Total Flights
STL to LAX Route DetailsReturn: LAX to STL
STL AirportLAX Airport

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