Flight Check

Best Airline: ORD to SFO

Chicago to San Francisco — airline reliability comparison

United Airlines is the most reliable airline on the ORD to SFO route with a 76% on-time rate, compared to Alaska Airlines at 68%. Based on 12,583 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 Airlines76%
American Airlines68%
Alaska Airlines68%

ORD to SFO Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest76%1.0%72m12,583
American AirlinesAA68%1.0%67m4,545
Alaska AirlinesASWorst68%2.2%59m1,264

Route Overview

73%
Overall On-Time
70m
Avg Delay
1.1%
Cancel Rate
18,392
Total Flights
ORD to SFO Route DetailsReturn: SFO to ORD
ORD AirportSFO Airport

Flying out of ORD? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

Free. No account needed.

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