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

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

63.8% of 6,583 official scheduled SAN-to-SFO flights arrived on time; 24.5% arrived at least 30 minutes late and 1.3% 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
63.8%arrived on time
24.5%30+ min late
1.3%cancelled
6,583scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late12.3%all scheduled flights
120+ minutes late3.5%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+15.6 mincompleted flights

Which departure time was most reliable for SAN to SFO?

Among qualifying SAN-to-SFO departure window results, Early morning had the highest on-time rate: 73.2% of 1,506 flights. Evening was lowest at 53.0% across 1,756 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,50673.2%15.7%0.9%
Late morning1,28861.5%24.5%0.9%
Afternoon1,78769.1%20.1%0.6%
Evening1,75653.0%35.6%2.1%
Night24656.9%29.3%4.1%

Which weekday was most reliable for SAN to SFO?

Among qualifying SAN-to-SFO weekday results, Tuesday had the highest on-time rate: 73.6% of 903 flights. Thursday was lowest at 58.3% across 1,025 flights.

DayFlightsOn time30+ minCancelled
Monday1,02460.6%26.4%1.3%
Tuesday90373.6%17.9%0.7%
Wednesday88365.0%23.8%1.8%
Thursday1,02558.3%28.5%2.0%
Friday1,02659.3%28.4%1.3%
Saturday73872.6%16.9%0.5%
Sunday98460.9%26.4%1.0%

Which airline was most reliable for SAN to SFO?

Among qualifying SAN-to-SFO airline results, United Airlines had the highest on-time rate: 70.1% of 2,598 flights. Frontier Airlines was lowest at 43.4% across 196 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,59870.1%19.0%0.7%
Southwest Airlines1,93557.8%30.5%1.1%
SkyWest Airlines1,55165.4%22.2%1.7%
Alaska Airlines30353.5%34.0%1.0%
Frontier Airlines19643.4%39.8%7.7%

Which month was most reliable for SAN to SFO?

Among qualifying SAN-to-SFO month results, March 2026 had the highest on-time rate: 82.4% of 490 flights. June 2026 was lowest at 37.2% across 618 flights.

MonthFlightsOn time30+ minCancelled
July 202558263.2%23.4%1.0%
August 202559369.3%20.2%0.8%
September 202558171.9%17.4%1.9%
October 202566264.4%23.4%1.4%
November 202556566.5%23.0%2.5%
December 202548567.6%22.7%1.0%
January 202650581.6%11.3%1.6%
February 202644376.3%17.2%0.7%
March 202649082.4%9.6%0.8%
April 202651951.4%34.7%0.4%
May 202654041.3%41.7%0.9%
June 202661837.2%44.2%1.8%

What drove SAN to SFO delay minutes?

National airspace was the largest recorded SAN-to-SFO delay category, accounting for 48.4% of 139,206 BTS-attributed delay minutes during July 2025–June 2026.

Airline15.5%
Late aircraft33.8%
National airspace48.4%
Weather2.3%
Security0.0%
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.