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

San Antonio, TX (SAT) to Houston, TX (HOU) flight delay odds

74.2% of 1,378 official scheduled SAT-to-HOU flights arrived on time; 14.6% arrived at least 30 minutes late and 0.3% 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 SIGNALGenerally reliable
74.2%arrived on time
14.6%30+ min late
0.3%cancelled
1,378scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.2%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+6.4 mincompleted flights

Which departure time was most reliable for SAT to HOU?

Among qualifying SAT-to-HOU departure window results, Early morning had the highest on-time rate: 92.5% of 494 flights. Evening was lowest at 53.2% across 449 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning49492.5%3.2%0.2%
Late morning12487.9%3.2%0.0%
Afternoon29869.1%18.5%0.7%
Evening44953.2%27.8%0.2%

Which weekday was most reliable for SAT to HOU?

Among qualifying SAT-to-HOU weekday results, Tuesday had the highest on-time rate: 79.6% of 186 flights. Thursday was lowest at 68.7% across 195 flights.

DayFlightsOn time30+ minCancelled
Monday19574.4%12.8%0.5%
Tuesday18679.6%11.8%0.0%
Wednesday18173.5%17.7%0.0%
Thursday19568.7%16.4%0.0%
Friday19375.1%12.4%0.5%
Saturday21378.9%12.2%0.5%
Sunday21569.8%18.6%0.5%

Which airline was most reliable for SAT to HOU?

Only Southwest Airlines met the SAT-to-HOU airline threshold: 74.2% of 1,378 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,37874.2%14.6%0.3%

Which month was most reliable for SAT to HOU?

Among qualifying SAT-to-HOU month results, December 2025 had the highest on-time rate: 87.7% of 122 flights. May 2026 was lowest at 55.3% across 103 flights.

MonthFlightsOn time30+ minCancelled
July 202513163.4%22.1%0.0%
August 202514477.8%10.4%0.0%
September 202514183.0%6.4%0.0%
October 202514081.4%12.1%0.7%
November 202511976.5%14.3%0.0%
December 202512287.7%5.7%0.0%
January 20269885.7%6.1%1.0%
February 20268483.3%6.0%1.2%
March 202610056.0%30.0%0.0%
April 20269861.2%20.4%0.0%
May 202610355.3%26.2%0.0%
June 20269873.5%19.4%1.0%

What drove SAT to HOU delay minutes?

Late aircraft was the largest recorded SAT-to-HOU delay category, accounting for 45.0% of 17,569 BTS-attributed delay minutes during July 2025–June 2026.

Airline19.5%
Late aircraft45.0%
National airspace34.2%
Weather1.1%
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.