BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
MIA→ATL

Miami, FL (MIA) to Atlanta, GA (ATL) flight delay odds

72.5% of 6,223 official scheduled MIA-to-ATL flights arrived on time; 18.1% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
72.5%arrived on time
18.1%30+ min late
1.4%cancelled
6,223scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.0%all scheduled flights
120+ minutes late4.5%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+13.5 mincompleted flights

Which departure time was most reliable for MIA to ATL?

Among qualifying MIA-to-ATL departure window results, Early morning had the highest on-time rate: 87.6% of 1,772 flights. Evening was lowest at 58.7% across 1,405 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,77287.6%6.3%1.7%
Late morning62481.1%11.9%1.6%
Afternoon1,92868.4%21.1%1.0%
Evening1,40558.7%29.5%1.4%
Night49463.0%24.5%1.4%

Which weekday was most reliable for MIA to ATL?

Among qualifying MIA-to-ATL weekday results, Wednesday had the highest on-time rate: 79.7% of 817 flights. Sunday was lowest at 62.6% across 933 flights.

DayFlightsOn time30+ minCancelled
Monday92471.1%19.2%3.2%
Tuesday84877.7%14.6%0.7%
Wednesday81779.7%13.8%0.4%
Thursday91476.5%14.0%0.3%
Friday92573.2%17.8%1.3%
Saturday86268.0%20.5%2.0%
Sunday93362.6%25.9%1.8%

Which airline was most reliable for MIA to ATL?

Among qualifying MIA-to-ATL airline results, Envoy Air had the highest on-time rate: 76.9% of 225 flights. Republic Airways was lowest at 65.9% across 44 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines3,30075.5%16.4%1.4%
American Airlines1,52466.9%22.4%0.8%
Frontier Airlines86170.4%18.7%1.9%
Spirit Airlines26971.4%17.1%4.1%
Envoy Air22576.9%12.0%1.3%
Republic Airways4465.9%18.2%0.0%

Which month was most reliable for MIA to ATL?

Among qualifying MIA-to-ATL month results, October 2025 had the highest on-time rate: 78.1% of 484 flights. July 2025 was lowest at 60.5% across 519 flights.

MonthFlightsOn time30+ minCancelled
July 202551960.5%27.7%1.5%
August 202549963.3%24.8%1.0%
September 202541978.0%15.0%0.0%
October 202548478.1%14.0%0.4%
November 202549473.7%17.8%1.6%
December 202558474.1%15.6%2.4%
January 202654973.2%17.9%2.7%
February 202649077.1%14.5%0.4%
March 202657067.5%20.0%4.2%
April 202657276.0%15.2%0.2%
May 202655272.8%19.0%0.5%
June 202649177.2%14.9%1.2%

What drove MIA to ATL delay minutes?

Late aircraft was the largest recorded MIA-to-ATL delay category, accounting for 39.3% of 129,444 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.7%
Late aircraft39.3%
National airspace20.3%
Weather4.4%
Security0.3%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.