Delta Air Lines MIA to ATL on-time performance
Delta Air Lines nonstop flights from Miami to Atlanta · Aug 2025 – Jul 2026
On-time arrivals
77%
arrived < 15 min late
Cancelled
1.8%
58 flights
Avg arrival delay
19 min
81 min when late
Rank on route
#2 of 6
route average 74% on time
Key facts
- Delta Air Lines flights on MIA to ATL arrived on time 77% of the time in Aug 2025 – Jul 2026.
- 1.8% were cancelled, and 9% arrived an hour or more late.
- That ranks #2 of 6 airlines on this route, which averaged 74% on time overall.
- The largest source of delay minutes was late-arriving aircraft (38%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft38%
- Airline (crew, maintenance, cleaning, fueling)36%
- Air traffic control & airport congestion21%
- Extreme weather5%
- Security0%
Other airlines on MIA to ATL
- American Airlines67% on time · 28 min avg delay
- Frontier Airlines70% on time · 26 min avg delay
- Spirit Airlines75% on time · 18 min avg delay
- Envoy Air79% on time · 11 min avg delay
- Republic Airways66% on time · 21 min avg delay
Full MIA to ATL comparison →
Delta Air Lines on-time record across all routes →
3,308 Delta Air Lines flights tracked on this route; 58 cancelled, 4 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.