Flight Check

Best Airline: ATL to PIT

Atlanta to Pittsburgh — airline reliability comparison

Delta Air Lines is the most reliable airline on the ATL to PIT route with a 84% on-time rate, compared to Frontier Airlines at 45%. Based on 8,391 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 Lines84%
Southwest Airlines82%
Frontier Airlines45%

ATL to PIT Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest84%1.2%54m8,391
Southwest AirlinesWN82%0.3%51m1,551
Frontier AirlinesF9Worst45%4.6%81m47

Route Overview

83%
Overall On-Time
55m
Avg Delay
1.1%
Cancel Rate
9,999
Total Flights
ATL to PIT Route DetailsReturn: PIT to ATL
ATL AirportPIT Airport

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