Flight Check

Best Airline: COS to ATL

Colorado Springs to Atlanta — airline reliability comparison

Delta Air Lines is the most reliable airline on the COS to ATL route with a 86% on-time rate. Based on 1,559 flights tracked.

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

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Delta Air Lines86%

COS to ATL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest86%1.0%88m1,559

Route Overview

87%
Overall On-Time
90m
Avg Delay
1%
Cancel Rate
1,559
Total Flights
COS to ATL Route DetailsReturn: ATL to COS
COS AirportATL Airport

Flying out of COS? 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.