Flight Check

Best Airline: LAS to DSM

Las Vegas to Des Moines — airline reliability comparison

Southwest Airlines is the most reliable airline on the LAS to DSM route with a 79% on-time rate, compared to Allegiant Air at 73%. 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 Airlines79%
Allegiant Air73%

LAS to DSM Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest79%0.5%43m1,082
Allegiant AirG4Worst73%0.7%88m797

Route Overview

77%
Overall On-Time
58m
Avg Delay
0.6%
Cancel Rate
1,929
Total Flights
LAS to DSM Route DetailsReturn: DSM to LAS
LAS AirportDSM Airport

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