JFK to MIA flight delays & on-time performance
Nonstop flights from John F. Kennedy International Airport to Miami International Airport · 1,089 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at JFK or MIA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from New York (JFK) to Miami (MIA) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.8% were cancelled, and 10% arrived an hour or more late.
- Frontier Airlines was the most punctual airline here (81% on time); Delta Air Lines was the least (76%).
- Departures scheduled around 5am did best (94% on time); around 7pm did worst (68%).
- Wednesday was the most reliable day to fly (83% on time) and Sunday the least (67%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from JFK to MIA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Frontier Airlines | 81% | 2.1% | 19 min | 7.6% | 243 |
| American Airlines | 77% | 2.7% | 26 min | 10.8% | 2,665 |
| Delta Air Lines | 76% | 3.3% | 18 min | 9.1% | 1,621 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%227 flights
- 6am90%370 flights
- 7am85%642 flights
- 8am83%65 flights
- 10am76%128 flights
- 11am77%804 flights
- 12pm77%66 flights
- 1pm73%216 flights
- 2pm79%283 flights
- 3pm71%375 flights
- 5pm70%431 flights
- 6pm71%353 flights
- 7pm68%373 flights
- 8pm72%81 flights
- 9pm59%72 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%5.2% cancelled
- Tuesday82%3.9% cancelled
- Wednesday83%1.7% cancelled
- Thursday76%0.9% cancelled
- Friday79%0.9% cancelled
- Saturday76%2.8% cancelled
- Sunday67%4.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion20%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather74%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion5%
- Security0%
JFK to MIA: common questions
- How often are JFK to MIA flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from New York to Miami cancelled?
- 2.8% of scheduled flights were cancelled (129 of 4,529).
- How long are typical delays?
- Across all flights the average arrival delay was 23 min (early arrivals count as zero). Flights that were late arrived 96 min behind schedule on average, and 10.0% of flights were an hour or more late.
- How long is taxi time at JFK?
- Flights on this route spent 26 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MIA to JFK — 72% on time
More flights from New York
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: JFK → MIA, nonstop flights by US airlines that report to the DOT. How we calculate this.