Flight Check

Best Airline: IAH to SFO

Houston to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the IAH to SFO route with a 77% on-time rate. Based on 11,809 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 Airlines77%

IAH to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest77%1.0%69m11,809

Route Overview

77%
Overall On-Time
69m
Avg Delay
1%
Cancel Rate
11,809
Total Flights
IAH to SFO Route DetailsReturn: SFO to IAH
IAH AirportSFO Airport

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