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

San Jose, CA (SJC) to San Diego, CA (SAN) flight delay odds

Historically, 71.6% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 4,979 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
71.6%arrived on time
15.0%30+ min late
1.0%cancelled
4,979scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.1%all scheduled flights
120+ minutes late1.3%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+9.7 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 morning1,10587.3%4.9%0.9%
Late morning1,13174.1%13.2%0.7%
Afternoon1,38468.6%16.6%0.9%
Evening1,25660.0%22.9%1.4%
Night10356.3%26.2%2.9%

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
Monday78770.4%14.6%0.9%
Tuesday68583.6%8.8%1.2%
Wednesday65380.6%11.0%1.7%
Thursday77965.9%16.6%1.3%
Friday79359.9%23.1%0.9%
Saturday51882.4%8.9%0.4%
Sunday76464.8%18.7%0.8%

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
Southwest Airlines3,74069.9%15.8%1.0%
SkyWest Airlines1,16676.1%13.1%1.2%
Alaska Airlines4991.8%2.0%0.0%
Spirit Airlines2470.8%16.7%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202547177.5%11.0%0.8%
August 202544172.3%13.6%0.0%
September 202539877.1%11.6%1.8%
October 202543465.2%17.5%1.4%
November 202545270.6%14.6%2.7%
December 202539663.6%22.5%1.8%
January 202631879.6%10.7%1.6%
February 202630779.8%12.4%0.3%
March 202640676.4%13.8%1.7%
April 202645476.2%11.7%0.0%
May 202643965.8%18.7%0.2%
June 202646359.4%20.7%0.2%

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.

Airline20.7%
Late aircraft40.8%
National airspace36.3%
Weather2.2%
Security0.1%
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.