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

Portland, OR (PDX) to San Diego, CA (SAN) flight delay odds

78.2% of 1,772 official scheduled PDX-to-SAN flights arrived on time; 9.3% arrived at least 30 minutes late and 0.8% 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 SIGNALGenerally reliable
78.2%arrived on time
9.3%30+ min late
0.8%cancelled
1,772scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.1%all scheduled flights
120+ minutes late1.0%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+4.8 mincompleted flights

Which departure time was most reliable for PDX to SAN?

Among qualifying PDX-to-SAN departure window results, Early morning had the highest on-time rate: 82.1% of 347 flights. Evening was lowest at 72.4% across 391 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning34782.1%6.9%1.2%
Late morning41081.2%7.3%0.7%
Afternoon43876.5%9.4%0.5%
Evening39172.4%13.6%0.8%
Night18680.1%9.1%1.1%

Which weekday was most reliable for PDX to SAN?

Among qualifying PDX-to-SAN weekday results, Saturday had the highest on-time rate: 86.0% of 236 flights. Friday was lowest at 70.5% across 261 flights.

DayFlightsOn time30+ minCancelled
Monday26377.6%9.1%0.4%
Tuesday24482.8%5.3%0.8%
Wednesday23482.1%6.8%0.4%
Thursday26273.7%12.6%1.5%
Friday26170.5%12.3%1.5%
Saturday23686.0%7.2%0.4%
Sunday27276.1%11.0%0.4%

Which airline was most reliable for PDX to SAN?

Among qualifying PDX-to-SAN airline results, SkyWest Airlines had the highest on-time rate: 90.0% of 30 flights. Southwest Airlines was lowest at 75.9% across 137 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines1,60578.1%9.4%0.9%
Southwest Airlines13775.9%8.0%0.0%
SkyWest Airlines3090.0%10.0%0.0%

Which month was most reliable for PDX to SAN?

Among qualifying PDX-to-SAN month results, April 2026 had the highest on-time rate: 89.1% of 165 flights. December 2025 was lowest at 66.9% across 157 flights.

MonthFlightsOn time30+ minCancelled
July 202515782.2%12.1%1.3%
August 202514774.8%12.2%1.4%
September 202513086.2%7.7%0.8%
October 202514372.0%11.2%0.7%
November 202514569.0%11.7%0.0%
December 202515766.9%15.9%1.3%
January 202613278.0%9.1%0.8%
February 202611983.2%5.9%0.0%
March 202617284.9%6.4%0.6%
April 202616589.1%3.0%1.2%
May 202615583.9%6.5%0.0%
June 202615067.3%10.0%1.3%

What drove PDX to SAN delay minutes?

National airspace was the largest recorded PDX-to-SAN delay category, accounting for 37.8% of 15,100 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.6%
Late aircraft33.7%
National airspace37.8%
Weather0.7%
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.