New York (JFK) to Miami (MIA): On-Time Performance
Data through May 2026
The calendar drives reliability on JFK–MIA. October 2024 flights landed on schedule 89% of the time, but June 2025 dropped to 62% — a gap of 27 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 67%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 2.2%
- Flights/day
- 13
- last 12 months
- Duration
- 3h 17m
- scheduled
- Distance
- 1,089 mi
Best airline from JFK to MIA
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 78% | 20 min | 2.4% | 5,393 |
| Frontier Airlines | 75% | 24 min | 2.0% | 350 |
| Delta Air Lines | 74% | 20 min | 2.3% | 3,188 |
| JetBlue Airways | 66% | 24 min | 1.8% | 1,022 |
Monthly on-time trend
Best time to fly from JFK to MIA
Aim for departures around 5 a.m. (90% on-time); avoid 7 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 23 min |
| Tuesdaybest | 80% | 16 min |
| Wednesday | 80% | 18 min |
| Thursday | 73% | 23 min |
| Friday | 77% | 18 min |
| Saturday | 76% | 21 min |
| Sunday | 69% | 25 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations32%
- National airspace system26%
- 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 2024-06 and 2026-05. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from JFK to MIA?
- American Airlines has the best on-time record on this route at 78%, based on 5,393 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 (90% on-time), while departures around 7 p.m. have the worst (63%). 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 17m 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?
- 2.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from JFK to MIA?
- June 2025 was the roughest month in this dataset, with only 62% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 9,957 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.