Flight Check

Best Airline: SFO to BWI

San Francisco to Baltimore — airline reliability comparison

United Airlines is the most reliable airline on the SFO to BWI route with a 87% on-time rate, compared to Southwest Airlines at 66%. 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 Airlines87%
Southwest Airlines66%

SFO to BWI Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest87%0.7%42m2,104
Southwest AirlinesWNWorst66%0.7%49m422

Route Overview

84%
Overall On-Time
44m
Avg Delay
0.8%
Cancel Rate
2,526
Total Flights
SFO to BWI Route DetailsReturn: BWI to SFO
SFO AirportBWI Airport

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