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

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

Historically, 83.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,777 flights.

HISTORICAL ROUTE SIGNALLower disruption
83.2%arrived on time
8.9%30+ min late
1.1%cancelled
1,777scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.1%all scheduled flights
120+ minutes late1.0%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival-1.3 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning32692.0%3.4%0.9%
Late morning40386.1%6.9%1.0%
Afternoon45980.4%11.3%0.4%
Evening47977.0%12.5%1.7%
Night11085.5%7.3%1.8%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday26382.1%9.1%0.8%
Tuesday24790.3%4.9%0.8%
Wednesday23484.6%8.1%1.3%
Thursday26280.9%11.1%1.1%
Friday26378.3%12.2%1.5%
Saturday23688.1%4.7%1.3%
Sunday27279.4%11.8%0.7%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines1,61084.8%8.2%1.2%
Southwest Airlines13763.5%18.2%0.0%
SkyWest Airlines3086.7%6.7%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202515780.3%10.8%1.9%
August 202514879.7%12.8%2.0%
September 202513086.9%5.4%0.8%
October 202514585.5%8.3%1.4%
November 202514580.7%10.3%0.0%
December 202515681.4%9.6%0.6%
January 202613679.4%11.0%2.2%
February 202611890.7%5.9%0.0%
March 202617290.1%5.8%1.2%
April 202616490.2%2.4%1.2%
May 202615587.1%7.1%0.0%
June 202615166.9%17.9%1.3%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline29.8%
Late aircraft57.6%
National airspace10.3%
Weather1.3%
Security1.0%
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.