How often are MIA to ATL flights on time?

Flights from Miami (MIA) to Atlanta (ATL) arrive on time 80% of the time across 40,133 flights of official data.

Which airline is most reliable on the MIA to ATL route?

Spirit Airlines has the best on-time record on this route at 86% across 1,709 flights.

Route reliability

Flights from Miami to Atlanta arrive on time 80% of the time across 40,133 flights. Here’s how each airline really performs.

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On-time rate

40,133 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg ATL → MIA.

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Nonstop vs. Connecting Flights: The Reliability Trade-off

A stop multiplies the ways a trip can break. When it's worth it — and how to de-risk it.

Do Morning Flights Really Have Fewer Delays?

Yes — and there's a clear reason. How delays snowball through the day.

Are Some Airlines Really More Reliable Than Others?

The reliability gap between airlines is real — here's what actually drives it.

Score real MIA–ATL flights on reliability, weather, and connection safety — not just price.