Flight Check

Best Airline: IAD to LAX

Washington to Los Angeles — airline reliability comparison

United Airlines is the most reliable airline on the IAD to LAX route with a 84% on-time rate, compared to Alaska Airlines at 73%. Based on 7,651 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

United Airlines84%
American Airlines76%
Alaska Airlines73%

IAD to LAX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest84%1.1%68m7,651
American AirlinesAA76%0.0%61m115
Alaska AirlinesASWorst73%0.8%59m1,155

Route Overview

82%
Overall On-Time
67m
Avg Delay
1%
Cancel Rate
8,932
Total Flights
IAD to LAX Route DetailsReturn: LAX to IAD
IAD AirportLAX Airport

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