Flight Check

Best Airline: ORD to PHX

Chicago to Phoenix — airline reliability comparison

United Airlines is the most reliable airline on the ORD to PHX route with a 83% on-time rate, compared to Spirit Airlines at 61%. Based on 6,934 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

United Airlines83%
American Airlines78%
Southwest Airlines71%
Frontier Airlines67%
Spirit Airlines61%

ORD to PHX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest83%0.9%63m6,934
American AirlinesAA78%1.1%91m10,390
Southwest AirlinesWN71%0.8%60m2,444
Frontier AirlinesF967%3.3%87m691
Spirit AirlinesNKWorst61%0.4%59m214

Route Overview

78%
Overall On-Time
78m
Avg Delay
1.1%
Cancel Rate
20,720
Total Flights
ORD to PHX Route DetailsReturn: PHX to ORD
ORD AirportPHX Airport

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