Flight Check

Best Airline: BOS to SAN

Boston to San Diego — airline reliability comparison

JetBlue Airways is the most reliable airline on the BOS to SAN route with a 81% on-time rate, compared to Southwest Airlines at 46%. Based on 2,915 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

JetBlue Airways81%
Delta Air Lines74%
Alaska Airlines74%
Southwest Airlines46%

BOS to SAN Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
JetBlue AirwaysB6Best81%0.8%59m2,915
Delta Air LinesDL74%0.8%45m1,305
Alaska AirlinesAS74%1.1%62m1,571
Southwest AirlinesWNWorst46%3.2%73m58

Route Overview

77%
Overall On-Time
57m
Avg Delay
0.9%
Cancel Rate
5,850
Total Flights
BOS to SAN Route DetailsReturn: SAN to BOS
BOS AirportSAN Airport

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