Flight Check

Best Airline: RDU to ORD

Raleigh to Chicago — airline reliability comparison

American Airlines is the most reliable airline on the RDU to ORD route with a 86% on-time rate, compared to Frontier Airlines at 51%. Based on 2,467 flights tracked.

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

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

American Airlines86%
SkyWest Airlines81%
United Airlines81%
Republic Airways77%
76%
Frontier Airlines51%

RDU to ORD Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
American AirlinesAABest86%1.7%117m2,467
SkyWest AirlinesOO81%1.6%145m293
United AirlinesUA81%1.1%82m4,276
Republic AirwaysYX77%2.6%67m2,240
MQ76%1.5%78m1,575
Frontier AirlinesF9Worst51%6.9%123m188

Route Overview

80%
Overall On-Time
90m
Avg Delay
1.7%
Cancel Rate
11,143
Total Flights
RDU to ORD Route DetailsReturn: ORD to RDU
RDU AirportORD Airport

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