Flight Check

Best Airline: SNA to DEN

Santa Ana to Denver — airline reliability comparison

United Airlines is the most reliable airline on the SNA to DEN route with a 86% on-time rate, compared to Frontier Airlines at 81%. Based on 6,273 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 Airlines86%
Southwest Airlines81%
Frontier Airlines81%

SNA to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest86%0.6%72m6,273
Southwest AirlinesWN81%0.8%54m5,751
Frontier AirlinesF9Worst81%1.7%64m1,187

Route Overview

83%
Overall On-Time
63m
Avg Delay
0.8%
Cancel Rate
13,211
Total Flights
SNA to DEN Route DetailsReturn: DEN to SNA
SNA AirportDEN Airport

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