Delta Air Lines AUS to MIA on-time performance
Delta Air Lines nonstop flights from Austin to Miami · Aug 2025 – Jul 2026
On-time arrivals
90%
arrived < 15 min late
Cancelled
1.2%
3 flights
Avg arrival delay
9 min
77 min when late
Rank on route
#2 of 6
route average 79% on time
Key facts
- Delta Air Lines flights on AUS to MIA arrived on time 90% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 4% arrived an hour or more late.
- That ranks #2 of 6 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (73%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)73%
- Air traffic control & airport congestion17%
- Late-arriving aircraft6%
- Extreme weather5%
- Security0%
Other airlines on AUS to MIA
- American Airlines80% on time · 17 min avg delay
- Southwest Airlines66% on time · 17 min avg delay
- Frontier Airlines76% on time · 21 min avg delay
- Envoy Air78% on time · 16 min avg delay
- Spirit Airlines100% on time · 0 min avg delay
Full AUS to MIA comparison →
Delta Air Lines on-time record across all routes →
252 Delta Air Lines flights tracked on this route; 3 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.