Flight Check

Best Airline: GSP to ORD

Greenville to Chicago — airline reliability comparison

United Airlines is the most reliable airline on the GSP to ORD route with a 88% on-time rate, compared to SkyWest Airlines at 79%. Based on 448 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 Airlines88%
American Airlines84%
Republic Airways83%
PSA Airlines82%
79%
SkyWest Airlines79%

GSP to ORD Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest88%0.8%97m448
American AirlinesAA84%4.8%45m47
Republic AirwaysYX83%2.1%51m868
PSA AirlinesOH82%3.6%74m148
MQ79%1.8%62m2,100
SkyWest AirlinesOOWorst79%2.5%78m1,452

Route Overview

80%
Overall On-Time
68m
Avg Delay
2.1%
Cancel Rate
5,127
Total Flights
GSP to ORD Route DetailsReturn: ORD to GSP
GSP AirportORD Airport

Flying out of GSP? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

Free. No account needed.

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