BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SFO→PDX

San Francisco, CA (SFO) to Portland, OR (PDX) flight delay odds

80.1% of 3,514 official scheduled SFO-to-PDX flights arrived on time; 12.5% arrived at least 30 minutes late and 0.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
80.1%arrived on time
12.5%30+ min late
0.3%cancelled
3,514scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.0%all scheduled flights
120+ minutes late2.2%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+4.3 mincompleted flights

Which departure time was most reliable for SFO to PDX?

Among qualifying SFO-to-PDX departure window results, Early morning had the highest on-time rate: 91.1% of 527 flights. Afternoon was lowest at 75.9% across 1,127 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning52791.1%5.1%0.8%
Late morning61678.1%13.3%0.5%
Afternoon1,12775.9%14.4%0.4%
Evening73780.7%13.2%0.1%
Night50779.7%13.8%0.0%

Which weekday was most reliable for SFO to PDX?

Among qualifying SFO-to-PDX weekday results, Saturday had the highest on-time rate: 86.6% of 441 flights. Thursday was lowest at 74.7% across 521 flights.

DayFlightsOn time30+ minCancelled
Monday53278.8%13.2%0.4%
Tuesday49285.0%8.7%0.4%
Wednesday48280.1%10.2%0.0%
Thursday52174.7%17.3%0.6%
Friday52478.2%15.3%0.6%
Saturday44186.6%8.8%0.0%
Sunday52278.7%12.8%0.4%

Which airline was most reliable for SFO to PDX?

Among qualifying SFO-to-PDX airline results, United Airlines had the highest on-time rate: 81.0% of 1,661 flights. SkyWest Airlines was lowest at 78.1% across 457 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines1,66181.0%11.9%0.2%
Alaska Airlines1,38379.8%12.7%0.5%
SkyWest Airlines45778.1%13.8%0.2%
Frontier Airlines1369.2%15.4%7.7%

Which month was most reliable for SFO to PDX?

Among qualifying SFO-to-PDX month results, March 2026 had the highest on-time rate: 88.9% of 289 flights. May 2026 was lowest at 67.9% across 299 flights.

MonthFlightsOn time30+ minCancelled
July 202531581.0%10.2%0.3%
August 202532785.0%8.9%0.6%
September 202532887.2%8.2%0.0%
October 202534482.8%9.0%0.0%
November 202528077.5%13.9%1.8%
December 202523578.3%14.9%0.4%
January 202625485.8%12.6%0.0%
February 202625484.6%10.6%0.0%
March 202628988.9%6.9%0.3%
April 202630073.3%17.0%0.7%
May 202629967.9%20.7%0.0%
June 202628968.2%18.3%0.0%

What drove SFO to PDX delay minutes?

Late aircraft was the largest recorded SFO-to-PDX delay category, accounting for 58.3% of 40,822 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.6%
Late aircraft58.3%
National airspace10.6%
Weather0.5%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.