Flight Check

Best Airline: SAT to ATL

San Antonio to Atlanta — airline reliability comparison

Delta Air Lines is the most reliable airline on the SAT to ATL route with a 86% on-time rate, compared to Frontier Airlines at 60%. Based on 8,574 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%
Southwest Airlines84%
Spirit Airlines62%
Frontier Airlines60%

SAT to ATL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest86%1.2%70m8,574
Southwest AirlinesWN84%0.4%52m2,019
Spirit AirlinesNK62%1.1%73m83
Frontier AirlinesF9Worst60%5.6%102m201

Route Overview

85%
Overall On-Time
69m
Avg Delay
1.1%
Cancel Rate
10,943
Total Flights
SAT to ATL Route DetailsReturn: ATL to SAT
SAT AirportATL Airport

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