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

Dallas, TX (DAL) to San Antonio, TX (SAT) flight delay odds

76.8% of 2,728 official scheduled DAL-to-SAT flights arrived on time; 14.1% arrived at least 30 minutes late and 1.1% 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
76.8%arrived on time
14.1%30+ min late
1.1%cancelled
2,728scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.8%all scheduled flights
120+ minutes late2.2%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+5.8 mincompleted flights

Which departure time was most reliable for DAL to SAT?

Among qualifying DAL-to-SAT departure window results, Early morning had the highest on-time rate: 94.9% of 584 flights. Night was lowest at 50.3% across 169 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning58494.9%2.6%1.4%
Late morning41586.5%5.8%2.2%
Afternoon91576.2%14.2%0.8%
Evening64562.0%25.1%0.8%
Night16950.3%32.5%1.2%

Which weekday was most reliable for DAL to SAT?

Among qualifying DAL-to-SAT weekday results, Tuesday had the highest on-time rate: 84.4% of 422 flights. Sunday was lowest at 69.4% across 353 flights.

DayFlightsOn time30+ minCancelled
Monday41876.3%14.1%1.4%
Tuesday42284.4%9.5%0.7%
Wednesday41481.4%11.1%0.2%
Thursday41674.3%15.9%0.5%
Friday41174.7%16.5%1.2%
Saturday29475.5%15.3%2.4%
Sunday35369.4%17.6%2.0%

Which airline was most reliable for DAL to SAT?

Only Southwest Airlines met the DAL-to-SAT airline threshold: 76.8% of 2,728 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,72876.8%14.1%1.1%

Which month was most reliable for DAL to SAT?

Among qualifying DAL-to-SAT month results, October 2025 had the highest on-time rate: 86.2% of 254 flights. June 2026 was lowest at 57.0% across 223 flights.

MonthFlightsOn time30+ minCancelled
July 202521272.2%19.8%1.4%
August 202521877.1%11.5%0.5%
September 202521985.4%9.1%0.0%
October 202525486.2%9.8%0.4%
November 202522976.9%12.7%1.3%
December 202522782.8%9.3%0.0%
January 202620580.5%9.3%6.3%
February 202618884.6%7.4%0.5%
March 202625176.5%13.1%1.2%
April 202625076.0%14.0%0.8%
May 202625267.9%20.6%0.8%
June 202622357.0%31.8%0.9%

What drove DAL to SAT delay minutes?

Late aircraft was the largest recorded DAL-to-SAT delay category, accounting for 61.1% of 33,889 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.6%
Late aircraft61.1%
National airspace8.2%
Weather2.0%
Security0.1%
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.