Flight Check

Best Airline: LAX to ORD

Los Angeles to Chicago — airline reliability comparison

United Airlines is the most reliable airline on the LAX to ORD route with a 86% on-time rate, compared to Frontier Airlines at 64%. Based on 11,463 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

United Airlines86%
Spirit Airlines81%
American Airlines79%
Delta Air Lines74%
Frontier Airlines64%

LAX to ORD Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest86%1.2%69m11,463
Spirit AirlinesNK81%1.8%60m2,139
American AirlinesAA79%1.2%96m10,405
Delta Air LinesDL74%0.0%75m151
Frontier AirlinesF9Worst64%4.6%150m283

Route Overview

82%
Overall On-Time
84m
Avg Delay
1.3%
Cancel Rate
24,468
Total Flights
LAX to ORD Route DetailsReturn: ORD to LAX
LAX AirportORD Airport

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