Flight Check

Best Airline: DEN to GSP

Denver to Greenville — airline reliability comparison

United Airlines is the most reliable airline on the DEN to GSP route with a 86% on-time rate, compared to SkyWest Airlines at 84%. Based on 307 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%
SkyWest Airlines84%

DEN to GSP Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest86%0.0%48m307
SkyWest AirlinesOOWorst84%0.9%47m979

Route Overview

83%
Overall On-Time
48m
Avg Delay
0.6%
Cancel Rate
1,342
Total Flights
DEN to GSP Route DetailsReturn: GSP to DEN
DEN AirportGSP Airport

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