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

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

78.2% of 1,370 official scheduled HOU-to-SAT flights arrived on time; 13.1% arrived at least 30 minutes late and 0.1% 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
78.2%arrived on time
13.1%30+ min late
0.1%cancelled
1,370scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+5.3 mincompleted flights

Which departure time was most reliable for HOU to SAT?

Among qualifying HOU-to-SAT departure window results, Early morning had the highest on-time rate: 94.9% of 216 flights. Night was lowest at 61.5% across 218 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning21694.9%1.9%0.0%
Late morning35185.5%8.5%0.0%
Afternoon28573.3%16.8%0.0%
Evening30074.3%17.0%0.0%
Night21861.5%21.6%0.5%

Which weekday was most reliable for HOU to SAT?

Among qualifying HOU-to-SAT weekday results, Wednesday had the highest on-time rate: 82.6% of 178 flights. Sunday was lowest at 69.3% across 215 flights.

DayFlightsOn time30+ minCancelled
Monday19576.4%13.8%0.0%
Tuesday18282.4%11.5%0.0%
Wednesday17882.6%12.9%0.0%
Thursday19580.0%11.3%0.0%
Friday19380.3%11.4%0.5%
Saturday21277.8%13.7%0.0%
Sunday21569.3%16.7%0.0%

Which airline was most reliable for HOU to SAT?

Only Southwest Airlines met the HOU-to-SAT airline threshold: 78.2% of 1,370 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,37078.2%13.1%0.1%

Which month was most reliable for HOU to SAT?

Among qualifying HOU-to-SAT month results, September 2025 had the highest on-time rate: 92.2% of 141 flights. June 2026 was lowest at 56.0% across 91 flights.

MonthFlightsOn time30+ minCancelled
July 202513174.0%19.8%0.0%
August 202514384.6%6.3%0.0%
September 202514192.2%5.0%0.0%
October 202514084.3%10.0%0.0%
November 202511980.7%16.0%0.0%
December 202512285.2%3.3%0.0%
January 20269784.5%7.2%0.0%
February 20268471.4%13.1%0.0%
March 202610164.4%20.8%0.0%
April 20269876.5%14.3%0.0%
May 202610369.9%21.4%0.0%
June 20269156.0%28.6%1.1%

What drove HOU to SAT delay minutes?

Late aircraft was the largest recorded HOU-to-SAT delay category, accounting for 52.4% of 14,773 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.2%
Late aircraft52.4%
National airspace12.4%
Weather2.9%
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.