American Airlines ATL to MIA on-time performance
American Airlines nonstop flights from Atlanta to Miami · Aug 2025 – Jul 2026
On-time arrivals
75%
arrived < 15 min late
Cancelled
0.8%
12 flights
Avg arrival delay
23 min
91 min when late
Rank on route
#1 of 6
route average 71% on time
Key facts
- American Airlines flights on ATL to MIA arrived on time 75% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 11% arrived an hour or more late.
- That ranks #1 of 6 airlines on this route, which averaged 71% on time overall.
- The largest source of delay minutes was late-arriving aircraft (49%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft49%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion11%
- Extreme weather9%
- Security0%
Other airlines on ATL to MIA
- Delta Air Lines71% on time · 17 min avg delay
- Frontier Airlines64% on time · 35 min avg delay
- Spirit Airlines74% on time · 26 min avg delay
- Envoy Air75% on time · 20 min avg delay
- Republic Airways64% on time · 26 min avg delay
Full ATL to MIA comparison →
American Airlines on-time record across all routes →
1,535 American Airlines flights tracked on this route; 12 cancelled, 3 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.