Flight Check

Best Airline: BOS to SFO

Boston to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the BOS to SFO route with a 80% on-time rate, compared to JetBlue Airways at 73%. Based on 6,411 flights tracked.

This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

United Airlines80%
Delta Air Lines76%
Alaska Airlines73%
JetBlue Airways73%

BOS to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest80%1.3%65m6,411
Delta Air LinesDL76%1.1%67m2,780
Alaska AirlinesAS73%1.3%65m1,375
JetBlue AirwaysB6Worst73%0.8%67m5,848

Route Overview

76%
Overall On-Time
66m
Avg Delay
1.1%
Cancel Rate
16,426
Total Flights
BOS to SFO Route DetailsReturn: SFO to BOS
BOS AirportSFO Airport

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