Flight Check

Best Airline: RDU to PHL

Raleigh to Philadelphia — airline reliability comparison

Republic Airways is the most reliable airline on the RDU to PHL route with a 87% on-time rate, compared to Frontier Airlines at 73%. Based on 323 flights tracked.

This route involves weather-prone airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Republic Airways87%
PSA Airlines77%
American Airlines75%
Frontier Airlines73%

RDU to PHL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Republic AirwaysYXBest87%2.3%58m323
PSA AirlinesOH77%4.2%124m1,047
American AirlinesAA75%1.9%106m4,654
Frontier AirlinesF9Worst73%3.1%95m2,283

Route Overview

74%
Overall On-Time
100m
Avg Delay
2.5%
Cancel Rate
8,388
Total Flights
RDU to PHL Route DetailsReturn: PHL to RDU
RDU AirportPHL Airport

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