Flight Check

Best Airline: PHX to BOS

Phoenix to Boston — airline reliability comparison

Delta Air Lines is the most reliable airline on the PHX to BOS route with a 84% on-time rate, compared to Spirit Airlines at 50%. Based on 1,422 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

Delta Air Lines84%
American Airlines81%
JetBlue Airways68%
Spirit Airlines50%

PHX to BOS Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest84%1.3%95m1,422
American AirlinesAA81%0.7%65m4,595
JetBlue AirwaysB668%1.5%90m1,336
Spirit AirlinesNKWorst50%0.0%58m22

Route Overview

79%
Overall On-Time
77m
Avg Delay
0.9%
Cancel Rate
7,387
Total Flights
PHX to BOS Route DetailsReturn: BOS to PHX
PHX AirportBOS Airport

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