Flight Check

Best Airline: LAS to SFO

Las Vegas to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the LAS to SFO route with a 74% on-time rate, compared to Southwest Airlines at 57%. Based on 8,648 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

United Airlines74%
Alaska Airlines70%
Frontier Airlines65%
SkyWest Airlines62%
Southwest Airlines57%

LAS to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest74%1.0%66m8,648
Alaska AirlinesAS70%1.6%61m3,542
Frontier AirlinesF965%1.4%67m3,418
SkyWest AirlinesOO62%0.7%65m668
Southwest AirlinesWNWorst57%0.6%55m4,694

Route Overview

67%
Overall On-Time
61m
Avg Delay
1%
Cancel Rate
20,998
Total Flights
LAS to SFO Route DetailsReturn: SFO to LAS
LAS AirportSFO Airport

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