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

San Francisco, CA (SFO) to San Diego, CA (SAN) flight delay odds

65.7% of 6,548 official scheduled SFO-to-SAN flights arrived on time; 22.1% arrived at least 30 minutes late and 1.1% 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 SIGNALVariable
65.7%arrived on time
22.1%30+ min late
1.1%cancelled
6,548scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.4%all scheduled flights
120+ minutes late3.2%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+16.1 mincompleted flights

Which departure time was most reliable for SFO to SAN?

Among qualifying SFO-to-SAN departure window results, Early morning had the highest on-time rate: 88.0% of 1,435 flights. Afternoon was lowest at 57.7% across 1,663 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,43588.0%5.6%1.0%
Late morning1,52658.9%27.7%1.2%
Afternoon1,66357.7%28.1%0.5%
Evening1,28859.5%25.9%1.7%
Night63664.8%22.5%1.7%

Which weekday was most reliable for SFO to SAN?

Among qualifying SFO-to-SAN weekday results, Saturday had the highest on-time rate: 77.9% of 736 flights. Monday was lowest at 59.1% across 1,011 flights.

DayFlightsOn time30+ minCancelled
Monday1,01159.1%25.8%1.5%
Tuesday90675.6%15.9%0.7%
Wednesday87867.9%19.2%1.7%
Thursday1,01459.2%27.8%1.8%
Friday1,02259.4%26.7%0.9%
Saturday73677.9%12.8%0.5%
Sunday98165.3%22.8%0.7%

Which airline was most reliable for SFO to SAN?

Among qualifying SFO-to-SAN airline results, Alaska Airlines had the highest on-time rate: 88.5% of 304 flights. Southwest Airlines was lowest at 52.0% across 1,935 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,59875.6%14.3%0.5%
Southwest Airlines1,93552.0%33.5%1.2%
SkyWest Airlines1,51563.3%23.6%2.0%
Alaska Airlines30488.5%4.3%0.3%
Frontier Airlines19652.0%29.6%3.1%

Which month was most reliable for SFO to SAN?

Among qualifying SFO-to-SAN month results, January 2026 had the highest on-time rate: 78.6% of 504 flights. June 2026 was lowest at 53.0% across 602 flights.

MonthFlightsOn time30+ minCancelled
July 202558267.2%19.9%0.5%
August 202559368.3%19.6%0.2%
September 202558272.9%15.6%1.4%
October 202565964.2%21.4%1.1%
November 202556461.0%24.5%3.4%
December 202548660.5%29.0%0.6%
January 202650478.6%12.7%1.4%
February 202644271.7%15.8%0.9%
March 202649176.6%12.6%0.8%
April 202651461.9%26.3%0.2%
May 202652955.2%32.7%1.1%
June 202660253.0%33.2%1.8%

What drove SFO to SAN delay minutes?

Late aircraft was the largest recorded SFO-to-SAN delay category, accounting for 50.3% of 127,906 BTS-attributed delay minutes during July 2025–June 2026.

Airline20.2%
Late aircraft50.3%
National airspace28.3%
Weather1.1%
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.