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

San Diego, CA (SAN) to Santa Rosa, CA (STS) flight delay odds

75.9% of 960 official scheduled SAN-to-STS flights arrived on time; 12.7% arrived at least 30 minutes late and 3.0% 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
75.9%arrived on time
12.7%30+ min late
3.0%cancelled
960scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.0%all scheduled flights
120+ minutes late0.8%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+0.6 mincompleted flights

Which departure time was most reliable for SAN to STS?

Among qualifying SAN-to-STS departure window results, Early morning had the highest on-time rate: 85.1% of 235 flights. Afternoon was lowest at 71.8% across 202 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning23585.1%8.9%0.0%
Late morning9277.2%8.7%4.3%
Afternoon20271.8%18.8%0.5%
Evening11373.5%13.3%0.0%
Night31872.3%12.6%7.5%

Which weekday was most reliable for SAN to STS?

Among qualifying SAN-to-STS weekday results, Wednesday had the highest on-time rate: 86.1% of 122 flights. Friday was lowest at 62.5% across 152 flights.

DayFlightsOn time30+ minCancelled
Monday15377.1%11.8%3.3%
Tuesday12080.8%10.0%3.3%
Wednesday12286.1%6.6%2.5%
Thursday14881.1%11.5%3.4%
Friday15262.5%21.1%3.9%
Saturday11578.3%10.4%3.5%
Sunday15069.3%15.3%1.3%

Which airline was most reliable for SAN to STS?

Among qualifying SAN-to-STS airline results, SkyWest Airlines had the highest on-time rate: 77.0% of 827 flights. Southwest Airlines was lowest at 69.2% across 133 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines82777.0%12.3%3.4%
Southwest Airlines13369.2%15.0%0.8%

Which month was most reliable for SAN to STS?

Among qualifying SAN-to-STS month results, March 2026 had the highest on-time rate: 84.1% of 69 flights. December 2025 was lowest at 53.8% across 52 flights.

MonthFlightsOn time30+ minCancelled
July 20256178.7%13.1%0.0%
August 20257178.9%11.3%0.0%
September 20258176.5%13.6%3.7%
October 20258674.4%8.1%4.7%
November 20258764.4%16.1%10.3%
December 20255253.8%25.0%7.7%
January 20265474.1%14.8%9.3%
February 20264475.0%18.2%2.3%
March 20266984.1%11.6%1.4%
April 202611481.6%6.1%0.0%
May 202612579.2%11.2%0.0%
June 202611679.3%13.8%1.7%

What drove SAN to STS delay minutes?

Late aircraft was the largest recorded SAN-to-STS delay category, accounting for 49.7% of 9,299 BTS-attributed delay minutes during July 2025–June 2026.

Airline20.7%
Late aircraft49.7%
National airspace26.4%
Weather3.3%
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.