Flight Check

Best Airline: MDW to LAS

Chicago to Las Vegas — airline reliability comparison

Southwest Airlines is the most reliable airline on the MDW to LAS route with a 77% on-time rate, compared to Frontier Airlines at 69%. Based on 9,516 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 Airlines77%
Frontier Airlines69%

MDW to LAS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest77%0.9%53m9,516
Frontier AirlinesF9Worst69%2.0%91m753

Route Overview

76%
Overall On-Time
58m
Avg Delay
1%
Cancel Rate
10,272
Total Flights
MDW to LAS Route DetailsReturn: LAS to MDW
MDW AirportLAS Airport

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