Flight Check

Best Airline: BWI to SFO

Baltimore to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the BWI to SFO route with a 84% on-time rate, compared to Southwest Airlines at 58%. Based on 2,104 flights tracked.

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

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

United Airlines84%
Southwest Airlines58%

BWI to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest84%2.2%55m2,104
Southwest AirlinesWNWorst58%0.7%60m422

Route Overview

79%
Overall On-Time
57m
Avg Delay
1.7%
Cancel Rate
2,526
Total Flights
BWI to SFO Route DetailsReturn: SFO to BWI
BWI AirportSFO Airport

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