Miami (MIA) to Austin (AUS): On-Time Performance
Data through May 2026
Miami (MIA) to Austin (AUS) effectively runs on two schedules. In April 2025, 86% of arrivals were on time; in July 2024 that fell to 61% — a 25-point seasonal swing. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 69%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 5.8
- last 12 months
- Duration
- 3h 12m
- scheduled
- Distance
- 1,103 mi
Best airline from MIA to AUS
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 75% | 21 min | 1.6% | 2,935 |
| Southwest Airlines | 73% | 18 min | 0.3% | 695 |
| Delta Air Lines | 67% | 33 min | 1.0% | 192 |
Monthly on-time trend
Best time to fly from MIA to AUS
Aim for departures around 7 a.m. (91% on-time); avoid 5 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 26 min |
| Tuesdaybest | 81% | 14 min |
| Wednesday | 79% | 14 min |
| Thursday | 75% | 21 min |
| Friday | 72% | 20 min |
| Saturday | 70% | 22 min |
| Sunday | 67% | 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 operations36%
- National airspace system16%
- Weather5%
Frequently asked questions
- How often are flights from MIA to AUS delayed?
- 26% of MIA–AUS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. 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 75%, based on 2,935 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 (91% on-time), while departures around 5 p.m. have the worst (56%). 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 26% of the time.
- How often are MIA to AUS flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to AUS?
- July 2024 was the roughest month in this dataset, with only 61% of arrivals on time. The best was April 2025 at 86%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 3,924 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.