Historical on-time performance
Miami to Atlanta
595 miData through May 2026Source: US DOT · BTS
Flights on MIA–ATL arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 5,970 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time74%Medianon timep9055 minCancel1.5%Flights3,313
- Envoy AirOn-time73%Medianon timep9045 minCancel1.4%Flights146
- Frontier AirlinesOn-time70%Medianon timep9070 minCancel1.8%Flights823
- Spirit AirlinesOn-time66%Medianon timep9055 minCancel7.0%Flights143
- American AirlinesOn-time66%Medianon timep9075 minCancel1.0%Flights1,545
Why flights run late
Delay causes
- Airline39%
- Weather4%
- Air traffic (NAS)19%
- Late aircraft38%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline55%
- Weather42%
- Air traffic (NAS)2%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 92 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 MIA → ATL
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 — 86% on time.
- Mornings86% on time · p90 20 min · 5,969 flights
- Middays75% on time · p90 45 min · 3,818 flights
- Afternoons63% on time · p90 90 min · 4,134 flights
- Overnights61% on time · p90 85 min · 2,028 flights
- Evenings55% on time · p90 100 min · 3,679 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 76% on time.
- Tuesdays76% on time · p90 45 min · 2,655 flights
- Wednesdays76% on time · p90 50 min · 2,635 flights
- Fridays71% on time · p90 60 min · 2,924 flights
- Thursdays71% on time · p90 65 min · 2,887 flights
- Mondays69% on time · p90 70 min · 2,887 flights
- Saturdays68% on time · p90 75 min · 2,724 flights
- Sundays63% on time · p90 85 min · 2,916 flights
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