Flight Check

Best Airline: RDU to ATL

Raleigh to Atlanta — airline reliability comparison

Delta Air Lines is the most reliable airline on the RDU to ATL route with a 87% on-time rate, compared to Frontier Airlines at 67%. Based on 12,678 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 Lines87%
Southwest Airlines87%
Frontier Airlines67%

RDU to ATL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest87%0.9%76m12,678
Southwest AirlinesWN87%0.6%66m2,123
Frontier AirlinesF9Worst67%3.6%85m1,640

Route Overview

85%
Overall On-Time
77m
Avg Delay
1.1%
Cancel Rate
16,458
Total Flights
RDU to ATL Route DetailsReturn: ATL to RDU
RDU AirportATL Airport

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