Flight Check

Best Airline: PIT to LAS

Pittsburgh to Las Vegas — airline reliability comparison

Southwest Airlines is the most reliable airline on the PIT to LAS route with a 81% on-time rate, compared to Spirit Airlines at 80%. Based on 2,040 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 Airlines81%
Spirit Airlines80%

PIT to LAS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Southwest AirlinesWNBest81%0.3%54m2,040
Spirit AirlinesNKWorst80%0.6%64m939

Route Overview

81%
Overall On-Time
58m
Avg Delay
0.4%
Cancel Rate
2,980
Total Flights
PIT to LAS Route DetailsReturn: LAS to PIT
PIT AirportLAS Airport

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