Historical on-time performance
Atlanta to Miami
594 miData through May 2026Source: US DOT · BTS
Flights on ATL–MIA arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 5,975 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Envoy AirOn-time77%Medianon timep9040 minCancel1.4%Flights148
- American AirlinesbestOn-time74%Medianon timep9065 minCancel1.1%Flights1,547
- Delta Air LinesOn-time67%Medianon timep9055 minCancel1.5%Flights3,311
- Spirit AirlinesOn-time64%Medianon timep9090 minCancel7.0%Flights143
- Frontier AirlinesOn-time63%Medianon timep9090 minCancel1.7%Flights826
Why flights run late
Delay causes
- Airline37%
- Weather5%
- Air traffic (NAS)21%
- Late aircraft38%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline53%
- Weather45%
- Air traffic (NAS)2%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 93 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ATL → MIA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 81% on time.
- Mornings81% on time · p90 30 min · 5,560 flights
- Middays74% on time · p90 45 min · 4,946 flights
- Overnights62% on time · p90 75 min · 2,866 flights
- Evenings61% on time · p90 85 min · 2,997 flights
- Afternoons60% on time · p90 85 min · 3,267 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 62% to 77% on time.
- Tuesdays77% on time · p90 40 min · 2,655 flights
- Wednesdays76% on time · p90 45 min · 2,639 flights
- Fridays70% on time · p90 55 min · 2,920 flights
- Thursdays70% on time · p90 60 min · 2,899 flights
- Mondays69% on time · p90 60 min · 2,877 flights
- Saturdays68% on time · p90 65 min · 2,723 flights
- Sundays62% on time · p90 80 min · 2,923 flights
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