San Antonio (SAT) to Miami (MIA): On-Time Performance
Data through July 2026
The calendar drives reliability on SAT–MIA. September 2024 flights landed on schedule 97% of the time, but July 2025 dropped to 73% — a gap of 24 points. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 75%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 1.3
- last 12 months
- Duration
- 2h 50m
- scheduled
- Distance
- 1,143 mi
Best airline from SAT to MIA
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 88% | 11 min | 1.7% | 829 |
| Envoy Air | 75% | 18 min | 0.8% | 241 |
Monthly on-time trend
Best time to fly from SAT to MIA
Aim for departures around 5 a.m. (91% on-time); avoid 4 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 24 min |
| Tuesdaybest | 92% | 8 min |
| Wednesday | 82% | 9 min |
| Thursday | 85% | 8 min |
| Friday | 84% | 19 min |
| Saturday | 82% | 10 min |
| Sunday | 85% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft35%
- Airline operations34%
- National airspace system16%
- Weather16%
Frequently asked questions
- How often are flights from SAT to MIA delayed?
- 15% of SAT–MIA 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.
- Which airline is most reliable from SAT to MIA?
- American Airlines has the best on-time record on this route at 88%, based on 829 flights. 2 airlines flew SAT–MIA frequently enough to compare in this period.
- What is the best time of day to fly from SAT to MIA?
- Departures around 5 a.m. have the best record (91% on-time), while departures around 4 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SAT to MIA?
- The scheduled SAT–MIA flight time averages 2h 50m over 1,143 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are SAT to MIA flights cancelled?
- 1.5% 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 MIA?
- July 2025 was the roughest month in this dataset, with only 73% of arrivals on time. The best was September 2024 at 97%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 1,078 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.