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

San Diego, CA (SAN) to San Antonio, TX (SAT) flight delay odds

70.8% of 610 official scheduled SAN-to-SAT flights arrived on time; 18.0% arrived at least 30 minutes late and 0.5% 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 SIGNALGenerally reliable
70.8%arrived on time
18.0%30+ min late
0.5%cancelled
610scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.4%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+10.1 mincompleted flights

Which departure time was most reliable for SAN to SAT?

Among qualifying SAN-to-SAT departure window results, Late morning had the highest on-time rate: 86.4% of 132 flights. Evening was lowest at 56.9% across 304 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning15084.7%6.7%0.0%
Late morning13286.4%4.5%0.0%
Evening30456.9%30.3%1.0%

Which weekday was most reliable for SAN to SAT?

Among qualifying SAN-to-SAT weekday results, Wednesday had the highest on-time rate: 80.2% of 86 flights. Monday was lowest at 63.4% across 93 flights.

DayFlightsOn time30+ minCancelled
Monday9363.4%21.5%0.0%
Tuesday8976.4%12.4%0.0%
Wednesday8680.2%11.6%1.2%
Thursday9268.5%23.9%0.0%
Friday9168.1%18.7%1.1%
Saturday6675.8%12.1%0.0%
Sunday9365.6%23.7%1.1%

Which airline was most reliable for SAN to SAT?

Only Southwest Airlines met the SAN-to-SAT airline threshold: 70.8% of 610 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines61070.8%18.0%0.5%

Which month was most reliable for SAN to SAT?

Among qualifying SAN-to-SAT month results, April 2026 had the highest on-time rate: 83.9% of 56 flights. June 2026 was lowest at 55.0% across 60 flights.

MonthFlightsOn time30+ minCancelled
July 20256173.8%14.8%0.0%
August 20255768.4%15.8%0.0%
September 20255682.1%14.3%1.8%
October 20255768.4%24.6%0.0%
November 20255673.2%10.7%1.8%
December 20256073.3%15.0%0.0%
January 20261973.7%21.1%0.0%
February 20261978.9%15.8%0.0%
March 20265265.4%19.2%0.0%
April 20265683.9%14.3%0.0%
May 20265761.4%22.8%0.0%
June 20266055.0%28.3%1.7%

What drove SAN to SAT delay minutes?

Late aircraft was the largest recorded SAN-to-SAT delay category, accounting for 73.5% of 9,032 BTS-attributed delay minutes during July 2025–June 2026.

Airline19.0%
Late aircraft73.5%
National airspace7.1%
Weather0.3%
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.