Flight Check

Best Airline: MIA to SFO

Miami to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the MIA to SFO route with a 75% on-time rate, compared to American Airlines at 67%. Based on 1,894 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 Airlines75%
American Airlines67%

MIA to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest75%1.4%73m1,894
American AirlinesAAWorst67%0.5%75m3,738

Route Overview

70%
Overall On-Time
74m
Avg Delay
0.8%
Cancel Rate
5,639
Total Flights
MIA to SFO Route DetailsReturn: SFO to MIA
MIA AirportSFO Airport

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