Flight Check

Best Airline: ATL to MKE

Atlanta to Milwaukee — airline reliability comparison

Delta Air Lines is the most reliable airline on the ATL to MKE route with a 83% on-time rate, compared to Frontier Airlines at 47%. Based on 7,374 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 Lines83%
Southwest Airlines81%
Frontier Airlines47%

ATL to MKE Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest83%1.4%52m7,374
Southwest AirlinesWN81%0.7%46m1,030
Frontier AirlinesF9Worst47%0.0%59m15

Route Overview

82%
Overall On-Time
53m
Avg Delay
1.3%
Cancel Rate
8,474
Total Flights
ATL to MKE Route DetailsReturn: MKE to ATL
ATL AirportMKE Airport

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