Flight Check

Best Airline: DCA to LAS

Washington to Las Vegas — airline reliability comparison

American Airlines is the most reliable airline on the DCA to LAS route with a 89% on-time rate, compared to Southwest Airlines at 50%. Based on 1,307 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 Airlines89%
Southwest Airlines50%

DCA to LAS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
American AirlinesAABest89%0.8%55m1,307
Southwest AirlinesWNWorst50%1.1%60m525

Route Overview

78%
Overall On-Time
57m
Avg Delay
0.9%
Cancel Rate
1,832
Total Flights
DCA to LAS Route DetailsReturn: LAS to DCA
DCA AirportLAS Airport

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