Miami (MIA) to Austin (AUS): On-Time Performance
Data through July 2026
Miami (MIA) to Austin (AUS) effectively runs on two schedules. In April 2025, 86% of arrivals were on time; in July 2026 that fell to 58% — a 28-point seasonal swing. Across the full period the route averages 73% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 69%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 6.0
- last 12 months
- Duration
- 3h 12m
- scheduled
- Distance
- 1,103 mi
Best airline from MIA to AUS
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 74% | 22 min | 1.3% | 3,102 |
| Southwest Airlines | 72% | 18 min | 0.3% | 726 |
| Delta Air Lines | 68% | 29 min | 0.8% | 253 |
Monthly on-time trend
Best time to fly from MIA to AUS
Aim for departures around 7 a.m. (92% on-time); avoid 5 p.m. departures (54%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 27 min |
| Tuesdaybest | 82% | 15 min |
| Wednesday | 78% | 14 min |
| Thursday | 74% | 21 min |
| Friday | 72% | 21 min |
| Saturday | 70% | 23 min |
| Sunday | 66% | 29 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations35%
- National airspace system16%
- Weather6%
Frequently asked questions
- How often are flights from MIA to AUS delayed?
- 27% of MIA–AUS 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 21 minutes.
- Which airline is most reliable from MIA to AUS?
- American Airlines has the best on-time record on this route at 74%, based on 3,102 flights. 3 airlines flew MIA–AUS frequently enough to compare in this period.
- What is the best time of day to fly from MIA to AUS?
- Departures around 7 a.m. have the best record (92% on-time), while departures around 5 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 MIA to AUS?
- The scheduled MIA–AUS flight time averages 3h 12m over 1,103 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are MIA to AUS flights cancelled?
- 1.1% 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 MIA to AUS?
- July 2026 was the roughest month in this dataset, with only 58% of arrivals on time. The best was April 2025 at 86%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 4,183 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.