Historical on-time performance
New York to Miami
Flights on JFK–MIA arrive on time 73% of the time over the last 12 months.
based on 4,430 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- American AirlinesOn-time74%Medianon timep9065 minCancel3.0%Flights2,656
- Delta Air LinesOn-time72%Medianon timep9055 minCancel3.3%Flights1,620
- Frontier AirlinesOn-time68%Medianon timep9085 minCancel3.2%Flights154
Why flights run late
Delay causes
- Airline34%
- Weather5%
- Air traffic (NAS)23%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline25%
- Weather71%
- Air traffic (NAS)4%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 138 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 JFK → 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 — 84% on time.
- Mornings84% on time · p90 25 min · 5,474 flights
- Middays74% on time · p90 55 min · 3,740 flights
- Afternoons63% on time · p90 85 min · 2,384 flights
- Overnights63% on time · p90 85 min · 448 flights
- Evenings63% on time · p90 85 min · 3,527 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 77% on time.
- Tuesdays77% on time · p90 50 min · 2,189 flights
- Wednesdays77% on time · p90 45 min · 2,184 flights
- Fridays75% on time · p90 50 min · 2,262 flights
- Saturdays72% on time · p90 65 min · 2,165 flights
- Mondays72% on time · p90 65 min · 2,258 flights
- Thursdays72% on time · p90 60 min · 2,247 flights
- Sundays67% on time · p90 75 min · 2,268 flights
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