Flight Check

Best Airline: SFO to PDX

San Francisco to Portland — airline reliability comparison

United Airlines is the most reliable airline on the SFO to PDX route with a 83% on-time rate, compared to Frontier Airlines at 57%. Based on 6,229 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 Airlines83%
Alaska Airlines79%
SkyWest Airlines77%
Frontier Airlines57%

SFO to PDX Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest83%0.6%63m6,229
Alaska AirlinesAS79%1.1%56m4,007
SkyWest AirlinesOO77%0.8%59m1,948
Frontier AirlinesF9Worst57%1.6%61m239

Route Overview

80%
Overall On-Time
60m
Avg Delay
0.8%
Cancel Rate
12,450
Total Flights
SFO to PDX Route DetailsReturn: PDX to SFO
SFO AirportPDX Airport

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