New York (JFK) to Miami (MIA): On-Time Performance
Data through July 2026
The calendar drives reliability on JFK–MIA. October 2024 flights landed on schedule 89% of the time, but July 2026 dropped to 61% — a gap of 28 points. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 66%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 12
- last 12 months
- Duration
- 3h 18m
- scheduled
- Distance
- 1,089 mi
Best airline from JFK to MIA
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 77% | 23 min | 2.4% | 5,642 |
| Delta Air Lines | 75% | 19 min | 2.5% | 3,312 |
| Frontier Airlines | 75% | 24 min | 2.0% | 350 |
| JetBlue Airways | 65% | 24 min | 1.5% | 950 |
Monthly on-time trend
Best time to fly from JFK to MIA
Aim for departures around 5 a.m. (91% on-time); avoid 9 p.m. departures (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 25 min |
| Tuesdaybest | 80% | 19 min |
| Wednesday | 79% | 18 min |
| Thursday | 73% | 23 min |
| Friday | 77% | 20 min |
| Saturday | 76% | 25 min |
| Sunday | 69% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations32%
- National airspace system24%
- Weather4%
- Security1%
Frequently asked questions
- How often are flights from JFK to MIA delayed?
- 25% of JFK–MIA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 22 minutes.
- Which airline is most reliable from JFK to MIA?
- American Airlines has the best on-time record on this route at 77%, based on 5,642 flights. 4 airlines flew JFK–MIA frequently enough to compare in this period.
- What is the best time of day to fly from JFK to MIA?
- Departures around 5 a.m. have the best record (91% on-time), while departures around 9 p.m. have the worst (59%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from JFK to MIA?
- The scheduled JFK–MIA flight time averages 3h 18m over 1,089 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are JFK to MIA flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from JFK to MIA?
- July 2026 was the roughest month in this dataset, with only 61% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 10,258 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.