Flight Check

Best Airline: GEG to DEN

Spokane to Denver — airline reliability comparison

United Airlines is the most reliable airline on the GEG to DEN route with a 84% on-time rate, compared to Frontier Airlines at 75%. Based on 3,064 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 Airlines84%
SkyWest Airlines84%
Southwest Airlines84%
Frontier Airlines75%

GEG to DEN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest84%1.0%87m3,064
SkyWest AirlinesOO84%0.4%61m621
Southwest AirlinesWN84%0.3%53m3,145
Frontier AirlinesF9Worst75%0.0%38m90

Route Overview

84%
Overall On-Time
70m
Avg Delay
0.7%
Cancel Rate
6,984
Total Flights
GEG to DEN Route DetailsReturn: DEN to GEG
GEG AirportDEN Airport

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