Flight Check

Best Airline: DSM to LAS

Des Moines to Las Vegas — airline reliability comparison

Southwest Airlines is the most reliable airline on the DSM to LAS route with a 85% on-time rate, compared to Allegiant Air at 72%. Based on 1,082 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

Southwest Airlines85%
Allegiant Air72%

DSM to LAS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest85%0.5%54m1,082
Allegiant AirG4Worst72%0.7%95m797

Route Overview

80%
Overall On-Time
80m
Avg Delay
0.6%
Cancel Rate
1,929
Total Flights
DSM to LAS Route DetailsReturn: LAS to DSM
DSM AirportLAS Airport

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