ATL → MIA American Airlines

American Airlines · Atlanta, GA to Miami, FL · 1,798 flights, 2025-07-01 to 2026-06-30 · aggregated across 56 flight numbers

This route runs much more reliably at some times of day than others — 93% on-time departing 3–6am vs. 55% departing 6–9pm.
On-time arrival
76%
Median delay
-7 min
90th percentile
+62 min
Cancellation rate
1%

How on-time is American Airlines from ATL to MIA?

Across every American Airlines flight number on ATL → MIA (1,798 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -7 min; the worst 10% ran +62 min or later. 1% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1,34976%
16-30 min1297%
31-60 min1207%
61-120 min965%
2+ hrs855%

Performance by month

MonthFlightsOn-timeAvg delay
2025-0715164%+32 min
2025-0817268%+18 min
2025-0912384%-3 min
2025-1014882%+11 min
2025-1114177%+11 min
2025-1216485%+3 min
2026-0114670%+29 min
2026-0213681%+11 min
2026-0315175%+17 min
2026-0416379%+5 min
2026-0515872%+17 min
2026-0612675%+15 min

Performance by day of week

DayFlightsOn-time
Mon25274%
Tue25583%
Wed25084%
Thu25576%
Fri25674%
Sat25372%
Sun25868%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…