Route reliability
New York (JFK) to Miami (MIA): which airline is most on time?
On-time arrivals, cancellations and long delays for every airline that reported nonstop flights from New York, NY (JFK) to Miami, FL (MIA), September 2025 to August 2026.
New York, NYMiami, FL
Route at a glance · September 2025 to August 2026
JFK to MIA
New York, NY to Miami, FL
- On time
- 74.3%vs 75.6% U.S. average About average
- Cancelled
- 3.1%vs 1.9% U.S. average Worse than average
- 60+ min late
- 10.1%vs 8.1% U.S. average Worse than average
- Scheduled flights
- 4,526in 12 months3 airlines
- Most reliable airline
- American Airlines74.5% on time · 2,693 flights
On time about as often as the U.S. average, with more cancellations.
Airlines on this route
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Diverted | Flights |
|---|---|---|---|---|---|---|
| 1. Frontier Airlines Small sample (under 300 flights) | 81.1% | 2.4% | 7.1% | 102 min | 0.0% | 212 |
| 2. American Airlines Most reliable | 74.5% | 3.0% | 11.0% | 113 min | 0.3% | 2,693 |
| 3. Delta Air Lines | 73.1% | 3.5% | 8.9% | 71 min | 0.1% | 1,621 |
On time = arrived within 15 minutes of schedule. Avg delay when late = average arrival delay of flights 15+ minutes late. "Most reliable" needs at least 300 flights in 12 months. Tap a heading to sort.
What this means
American Airlines has the strongest record on this route.
- American Airlines had the best on-time record from New York (JFK) to Miami (MIA): 74.5% of its 2,693 scheduled flights arrived within 15 minutes of schedule, compared with 73.1% for Delta Air Lines. The gap is small, so treat the airlines as roughly equal on punctuality.
- Frontier Airlines (81.1% on 212 flights) scored higher but flew the route far less often, so that result is less certain.
- 3.1% of flights on this route were cancelled (about 1 in 32), 1.2 points higher than the U.S. average of 1.9%.
- 10.1% of flights, about 1 in 10, arrived an hour or more late. When a flight was late (15+ minutes), the average arrival delay was 97 min.
- Overall, 74.3% of flights on this route arrived on time, 1.3 points lower than the U.S. average of 75.6%.
- Over the last 3 years, November was the most reliable month on this route (83.3% on time) and July the least reliable (60.6%).
- Cancellations peaked in July, when 5.5% of flights were cancelled.
- Flights scheduled to depart before 6 am were the most punctual (91.4% on time); flights scheduled to depart 7 pm to 8 pm were the least (65.5%).
- In the other direction, Miami (MIA) to New York (JFK), 69.1% of flights were on time and 3.1% were cancelled. Compare airlines MIA to JFK.
Best and worst months to fly JFK to MIA
Share of scheduled flights on time 12-month average 74.3%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 71.6% | 1,304 |
| February | 73.8% | 1,242 |
| March | 72.6% | 1,374 |
| April | 81.2% | 1,392 |
| May | 78.1% | 1,332 |
| June | 68.3% | 1,206 |
| July | 60.6% | 1,203 |
| August | 66.8% | 1,177 |
| September | 75.7% | 1,212 |
| October | 81.0% | 1,218 |
| November | 83.3% | 1,294 |
| December | 69.0% | 1,311 |
| Airline | Best month | Worst month |
|---|---|---|
| American Airlines | November (85.3%) | July (58.7%) |
| Delta Air Lines | April (82.8%) | July (63.1%) |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 79.1% | 359 |
| Oct 2025 | 71.2% | 372 |
| Nov 2025 | 77.8% | 405 |
| Dec 2025 | 69.4% | 396 |
| Jan 2026 | 71.7% | 382 |
| Feb 2026 | 71.4% | 339 |
| Mar 2026 | 76.0% | 362 |
| Apr 2026 | 86.9% | 406 |
| May 2026 | 83.2% | 400 |
| Jun 2026 | 78.3% | 360 |
| Jul 2026 | 56.6% | 373 |
| Aug 2026 | 68.0% | 372 |
Best and worst departure times
Share of scheduled flights on time
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 91.4% | 257 |
| Departing 6 am to 7 am | 86.8% | 340 |
| Departing 7 am to 8 am | 81.6% | 643 |
| Departing 8 am to 9 am | 80.0% | 65 |
| Departing 9 am to 10 am | Insufficient sample | 2 |
| Departing 10 am to 11 am | 72.7% | 128 |
| Departing 11 am to noon | 74.6% | 791 |
| Departing noon to 1 pm | Insufficient sample | 48 |
| Departing 1 pm to 2 pm | 69.5% | 220 |
| Departing 2 pm to 3 pm | 76.0% | 279 |
| Departing 3 pm to 4 pm | 69.1% | 433 |
| Departing 4 pm to 5 pm | Insufficient sample | 40 |
| Departing 5 pm to 6 pm | 69.3% | 401 |
| Departing 6 pm to 7 pm | 66.9% | 353 |
| Departing 7 pm to 8 pm | 65.5% | 377 |
| Departing 8 pm to 9 pm | 59.0% | 61 |
| Departing 9 pm to 10 pm | 53.4% | 88 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Nonstop scheduled flights from New York, NY (JFK) to Miami, FL (MIA), one direction. Airlines that report to the DOT only.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.