Direct, nonstop flights from Hartsfield-Jackson Atlanta International (ATL) to Miami International Airport (MIA) are plentiful and ideal for most travelers, boasting travel times around 2 hours and maximum convenience. Opting for connecting itineraries, usually via cities like Charlotte or Dallas, might yield marginally lower fares, but increases risk of delays—especially during September’s unpredictable weather. Nonstop flights reduce travel fatigue, simplify logistics, and are favored by business travelers, families, and vacationers headed to Miami Beach or cruise departures. Connecting routes may suit flexible, budget-focused fliers—just be mindful of longer total travel times and layover stress.