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

Portland, OR (PDX) to San Jose, CA (SJC) flight delay odds

82.0% of 1,636 official scheduled PDX-to-SJC flights arrived on time; 11.1% arrived at least 30 minutes late and 0.2% 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
82.0%arrived on time
11.1%30+ min late
0.2%cancelled
1,636scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.8%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+3.6 mincompleted flights

Which departure time was most reliable for PDX to SJC?

Among qualifying PDX-to-SJC departure window results, Early morning had the highest on-time rate: 94.8% of 385 flights. Evening was lowest at 65.6% across 416 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning38594.8%3.9%0.5%
Late morning21788.5%6.0%0.0%
Afternoon48584.5%8.0%0.0%
Evening41665.6%22.6%0.2%
Night13375.9%15.0%0.8%

Which weekday was most reliable for PDX to SJC?

Among qualifying PDX-to-SJC weekday results, Saturday had the highest on-time rate: 87.4% of 175 flights. Thursday was lowest at 79.3% across 256 flights.

DayFlightsOn time30+ minCancelled
Monday25679.3%13.3%0.0%
Tuesday23081.3%11.3%0.0%
Wednesday22387.0%4.9%0.4%
Thursday25679.3%15.2%0.4%
Friday25579.6%11.8%0.8%
Saturday17587.4%8.0%0.0%
Sunday24182.2%11.2%0.0%

Which airline was most reliable for PDX to SJC?

Among qualifying PDX-to-SJC airline results, Alaska Airlines had the highest on-time rate: 93.9% of 164 flights. Southwest Airlines was lowest at 77.0% across 973 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines97377.0%14.3%0.4%
SkyWest Airlines49987.8%7.2%0.0%
Alaska Airlines16493.9%3.7%0.0%

Which month was most reliable for PDX to SJC?

Among qualifying PDX-to-SJC month results, February 2026 had the highest on-time rate: 88.3% of 120 flights. July 2025 was lowest at 76.5% across 136 flights.

MonthFlightsOn time30+ minCancelled
July 202513676.5%16.2%0.0%
August 202514381.1%7.0%0.0%
September 202515078.7%13.3%0.7%
October 202515878.5%15.2%0.0%
November 202511681.9%12.9%0.9%
December 202518481.0%12.0%0.0%
January 202612686.5%8.7%0.0%
February 202612088.3%4.2%0.0%
March 202611486.0%7.9%0.0%
April 202611685.3%7.8%0.0%
May 202611683.6%11.2%0.0%
June 202615780.3%13.4%1.3%

What drove PDX to SJC delay minutes?

Late aircraft was the largest recorded PDX-to-SJC delay category, accounting for 63.7% of 15,635 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.4%
Late aircraft63.7%
National airspace3.8%
Weather1.8%
Security0.2%
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.