AUS to MIA flight delays & on-time performance
Nonstop flights from Austin Bergstrom International Airport to Miami International Airport · 1,103 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at AUS or MIA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Austin (AUS) to Miami (MIA) arrived on time 79% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.1% were cancelled, and 7% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (90% on time); Southwest Airlines was the least (66%).
- Departures scheduled around 5am did best (94% on time); around 3pm did worst (57%).
- Tuesday was the most reliable day to fly (86% on time) and Sunday the least (72%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from AUS to MIA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Spirit Airlines | 100% | 0.0% | 0 min | 0.0% | 1 |
| Delta Air Lines | 90% | 1.2% | 9 min | 3.6% | 252 |
| American Airlines | 80% | 1.2% | 17 min | 7.9% | 1,535 |
| Envoy AirRegional airline operating American Eagle flights. | 78% | 0.0% | 16 min | 11.1% | 18 |
| Frontier Airlines | 76% | 0.0% | 21 min | 10.8% | 37 |
| Southwest Airlines | 66% | 0.9% | 17 min | 6.4% | 349 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%365 flights
- 7am86%324 flights
- 8am89%164 flights
- 9am89%103 flights
- 10am79%279 flights
- 11am81%187 flights
- 12pm68%152 flights
- 1pm59%78 flights
- 3pm57%109 flights
- 4pm73%49 flights
- 5pm66%77 flights
- 6pm64%282 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%2.8% cancelled
- Tuesday86%0.7% cancelled
- Wednesday80%0.7% cancelled
- Thursday83%0.3% cancelled
- Friday78%0.9% cancelled
- Saturday73%0.3% cancelled
- Sunday72%2.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft46%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion18%
- Extreme weather3%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather72%
- Airline (crew, maintenance, cleaning, fueling)20%
- Air traffic control & airport congestion8%
- Security0%
AUS to MIA: common questions
- How often are AUS to MIA flights on time?
- 79% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Austin to Miami cancelled?
- 1.1% of scheduled flights were cancelled (25 of 2,192).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 72 min behind schedule on average, and 7.3% of flights were an hour or more late.
- How long is taxi time at AUS?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MIA to AUS — 72% on time
More flights from Austin
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: AUS → MIA, nonstop flights by US airlines that report to the DOT. How we calculate this.