Dallas (DAL) to San Antonio (SAT): On-Time Performance
Data through July 2026
When you fly DAL to SAT matters as much as anything else about the booking: the route swung from 89% on-time in October 2024 to just 58% in June 2026. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 65%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 7.5
- last 12 months
- Duration
- 1h 9m
- scheduled
- Distance
- 247 mi
Monthly on-time trend
Best time to fly from DAL to SAT
Aim for departures around 8 a.m. (97% on-time); avoid 10 p.m. departures (54%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 14 min |
| Tuesdaybest | 85% | 11 min |
| Wednesday | 84% | 10 min |
| Thursday | 77% | 14 min |
| Friday | 78% | 14 min |
| Saturday | 81% | 10 min |
| Sunday | 74% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft59%
- Airline operations29%
- National airspace system11%
- Weather2%
Frequently asked questions
- How often are flights from DAL to SAT delayed?
- 21% of DAL–SAT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- What is the best time of day to fly from DAL to SAT?
- Departures around 8 a.m. have the best record (97% on-time), while departures around 10 p.m. have the worst (54%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DAL to SAT?
- The scheduled DAL–SAT flight time averages 1h 9m over 247 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are DAL to SAT flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DAL to SAT?
- June 2026 was the roughest month in this dataset, with only 58% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 31-point gap is worth planning around.
Explore related pages
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Based on 5,666 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.