Flight Check

Best Airline: ISP to ATL

Islip to Atlanta — airline reliability comparison

Frontier Airlines is the most reliable airline on the ISP to ATL route with a 77% on-time rate. Based on 36 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

Frontier Airlines77%

ISP to ATL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Frontier AirlinesF9Best77%6.7%72m36

Route Overview

78%
Overall On-Time
75m
Avg Delay
5.6%
Cancel Rate
36
Total Flights
ISP to ATL Route DetailsReturn: ATL to ISP
ISP AirportATL Airport

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