Flight Check

Best Airline: BOS to PHL

Boston to Philadelphia — airline reliability comparison

Republic Airways is the most reliable airline on the BOS to PHL route with a 84% on-time rate, compared to Frontier Airlines at 73%. Based on 4,988 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 Airways84%
American Airlines79%
JetBlue Airways76%
Frontier Airlines73%

BOS to PHL Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Republic AirwaysYXBest84%2.5%63m4,988
American AirlinesAA79%2.1%105m8,453
JetBlue AirwaysB676%2.4%69m3,503
Frontier AirlinesF9Worst73%2.1%91m752

Route Overview

79%
Overall On-Time
87m
Avg Delay
2.2%
Cancel Rate
17,734
Total Flights
BOS to PHL Route DetailsReturn: PHL to BOS
BOS AirportPHL Airport

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