Flight Check

Best Airline: IAH to PHL

Houston to Philadelphia — airline reliability comparison

Republic Airways is the most reliable airline on the IAH to PHL route with a 82% on-time rate, compared to PSA Airlines at 70%. Based on 91 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 Airways82%
American Airlines82%
United Airlines81%
Spirit Airlines80%
Frontier Airlines71%
PSA Airlines70%

IAH to PHL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Republic AirwaysYXBest82%0.0%195m91
American AirlinesAA82%2.5%158m2,222
United AirlinesUA81%1.0%67m3,284
Spirit AirlinesNK80%1.7%77m707
Frontier AirlinesF971%0.0%84m51
PSA AirlinesOHWorst70%2.5%105m161

Route Overview

80%
Overall On-Time
104m
Avg Delay
1.8%
Cancel Rate
6,606
Total Flights
IAH to PHL Route DetailsReturn: PHL to IAH
IAH AirportPHL Airport

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