San Antonio (SAT) to Detroit (DTW): On-Time Performance
Data through July 2026
San Antonio (SAT) to Detroit (DTW) effectively runs on two schedules. In June 2026, 95% of arrivals were on time; in July 2024 that fell to 71% — a 25-point seasonal swing. Across the full period the route averages 88% on-time against a national 78%.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 2.6
- last 12 months
- Duration
- 3h 3m
- scheduled
- Distance
- 1,214 mi
Monthly on-time trend
Best time to fly from SAT to DTW
Aim for departures around 5 a.m. (95% on-time); avoid 4 p.m. departures (81%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 9 min |
| Tuesday | 89% | 8 min |
| Wednesday | 89% | 12 min |
| Thursday | 90% | 12 min |
| Fridaybest | 90% | 10 min |
| Saturday | 90% | 8 min |
| Sunday | 84% | 18 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations53%
- National airspace system9%
- Weather4%
Frequently asked questions
- How often are flights from SAT to DTW delayed?
- 12% of SAT–DTW 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 11 minutes.
- What is the best time of day to fly from SAT to DTW?
- Departures around 5 a.m. have the best record (95% on-time), while departures around 4 p.m. have the worst (81%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAT to DTW?
- The scheduled SAT–DTW flight time averages 3h 3m over 1,214 miles. Actual arrival times vary — flights on this route land 15+ minutes late 12% of the time.
- How often are SAT to DTW flights cancelled?
- 0.9% 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 SAT to DTW?
- July 2024 was the roughest month in this dataset, with only 71% of arrivals on time. The best was June 2026 at 95%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 1,965 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.