Flight Check

Best Airline: DEN to SMF

Denver to Sacramento — airline reliability comparison

United Airlines is the most reliable airline on the DEN to SMF route with a 81% on-time rate, compared to Southwest Airlines at 70%. Based on 6,522 flights tracked.

This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

United Airlines81%
Frontier Airlines79%
Southwest Airlines70%

DEN to SMF Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest81%0.6%63m6,522
Frontier AirlinesF979%0.6%58m591
Southwest AirlinesWNWorst70%0.8%52m6,967

Route Overview

75%
Overall On-Time
56m
Avg Delay
0.7%
Cancel Rate
14,117
Total Flights
DEN to SMF Route DetailsReturn: SMF to DEN
DEN AirportSMF Airport

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