JFK to MIA flight delays
New York, NY (JFK) Miami, FL (MIA) · 1,089 miles
360 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
79.89%
Arrived on time
Within 15 minutes of schedule
1.67%
Cancelled
Share of scheduled flights
139 min
When late, late by
Average across delayed arrivals
29 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Delta Air Lines arrived on time 8.6 points more often than American Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 139 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. MIA to JFK arrives on time 8.6 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is a thin route — 360 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Which airline should you fly on this route?
Over March 2025 – August 2026, Delta Air Lines arrived on time most often on JFK to MIA. American Airlines was late most often.
Every airline on JFK to MIA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| American Airlines | 240 | 77.02% | 2.08% | 165 min | C |
| Delta Air Lines | 120 | 85.59% | 0.83% | 58 min | B |
The return leg
MIA to JFK Miami back to New York 71.27% on time DOther routes from New York
Common questions
Are flights from New York to Miami usually delayed?
79.89% of flights on the JFK to MIA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from New York to Miami?
Delta Air Lines, at 85.59% on time across 120 flights. The least punctual on the route was American Airlines at 77.02%.
How often are JFK to MIA flights cancelled?
1.67% of scheduled flights did not operate — about 17 in every thousand. That is in the normal range.
When JFK to MIA flights are late, how late are they?
About 139 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on JFK to MIA during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →