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

Oakland, CA (OAK) to San Diego, CA (SAN) flight delay odds

66.2% of 3,201 official scheduled OAK-to-SAN flights arrived on time; 20.2% arrived at least 30 minutes late and 1.0% 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
66.2%arrived on time
20.2%30+ min late
1.0%cancelled
3,201scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.7%all scheduled flights
120+ minutes late2.2%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+14.3 mincompleted flights

Which departure time was most reliable for OAK to SAN?

Among qualifying OAK-to-SAN departure window results, Early morning had the highest on-time rate: 88.3% of 839 flights. Night was lowest at 45.6% across 57 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning83988.3%5.5%1.1%
Late morning58966.2%16.0%1.4%
Afternoon99862.2%22.4%0.5%
Evening71847.6%36.4%0.8%
Night5745.6%36.8%5.3%

Which weekday was most reliable for OAK to SAN?

Among qualifying OAK-to-SAN weekday results, Saturday had the highest on-time rate: 76.9% of 342 flights. Thursday was lowest at 57.1% across 490 flights.

DayFlightsOn time30+ minCancelled
Monday50665.8%21.1%0.6%
Tuesday43273.6%12.5%1.4%
Wednesday42773.5%14.1%1.2%
Thursday49057.1%28.0%1.2%
Friday50657.7%26.5%1.0%
Saturday34276.9%13.2%0.6%
Sunday49864.3%21.9%0.8%

Which airline was most reliable for OAK to SAN?

Among qualifying OAK-to-SAN airline results, Spirit Airlines had the highest on-time rate: 78.2% of 55 flights. Southwest Airlines was lowest at 65.9% across 2,939 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,93965.9%20.2%1.0%
SkyWest Airlines20767.6%21.7%1.4%
Spirit Airlines5578.2%14.5%0.0%

Which month was most reliable for OAK to SAN?

Among qualifying OAK-to-SAN month results, January 2026 had the highest on-time rate: 76.1% of 222 flights. December 2025 was lowest at 57.5% across 261 flights.

MonthFlightsOn time30+ minCancelled
July 202528874.3%14.9%1.0%
August 202528271.6%16.3%0.0%
September 202527570.9%14.2%0.7%
October 202527169.0%19.2%0.0%
November 202526060.0%20.4%4.2%
December 202526157.5%28.0%1.5%
January 202622276.1%14.9%0.9%
February 202622072.3%15.5%0.5%
March 202622970.3%19.2%0.9%
April 202626158.6%25.3%0.4%
May 202633960.2%25.1%0.6%
June 202629358.0%26.6%1.0%

What drove OAK to SAN delay minutes?

Late aircraft was the largest recorded OAK-to-SAN delay category, accounting for 44.1% of 51,992 BTS-attributed delay minutes during July 2025–June 2026.

Airline25.6%
Late aircraft44.1%
National airspace29.2%
Weather1.0%
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.