Flight Check

Best Airline: BOS to SAT

Boston to San Antonio — airline reliability comparison

Delta Air Lines is the most reliable airline on the BOS to SAT route with a 79% on-time rate, compared to JetBlue Airways at 77%. Based on 593 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 Lines79%
JetBlue Airways77%

BOS to SAT Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Delta Air LinesDLBest79%1.6%86m593
JetBlue AirwaysB6Worst77%1.0%56m654

Route Overview

78%
Overall On-Time
71m
Avg Delay
1.4%
Cancel Rate
1,247
Total Flights
BOS to SAT Route DetailsReturn: SAT to BOS
BOS AirportSAT Airport

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