Route profile
JFK→MIA
Flight reliability, delays and best times to fly from New York to Miami. · 1,089 miles
Right now
Current conditions at both ends of this route.
Aviation weather is not currently a factor. FAA operational data — ground stops, ground delay programs and closures — is not currently available to FlyerIntel.
Aviation weather is not currently a factor. FAA operational data — ground stops, ground delay programs and closures — is not currently available to FlyerIntel.
Airport conditions describe the airfield, not any individual flight. An airport operating normally is not a guarantee that a specific flight will depart on time.
Route reliability
July 2023 – June 2026
Better than 18% of comparable major US routes (4,577 compared)
Calculated from 15,464 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – June 2026
Best time to fly
On-time arrival rate by scheduled local departure time.
JFK → MIA flights departing 5–9 AM arrived on time 86.8% of the time, against 65.5% for 6–9 PM departures — a gap of 21.3 percentage points.
By departure window
By departure hour
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Buckets with fewer than 120 flights are not scored.
Airlines on this route
Performance by the carrier that actually operated the flight.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| American Airlines | 8,467 | 78.0% | 1.89% | -8 min | 9.1% |
| Delta Air Lines | 4,744 | 75.0% | 1.77% | -8 min | 9.5% |
| JetBlue | 1,899 | 63.9% | 2.90% | 1 min | 16.5% |
| Frontier Airlines | 350 | 75.1% | 2.00% | -8 min | 9.6% |
American Airlines arrived on time 14.0 percentage points more often than JetBlue on this route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 200 flights on this route are not listed.
Other ways to fly New York to Miami
Airport pairs serving the same journey, grouped by the DOT's own city-market definition. They do not perform the same way.
| Route | Flights | On time | Cancelled | Median delay | Score |
|---|---|---|---|---|---|
| LGA→MIA New York to Miami | 17,489 | 74.3% | 2.59% | -8 min | 47 |
| JFK→MIA this route New York to Miami | 15,464 | 75.3% | 1.98% | -7 min | 53 |
| EWR→FLL Newark to Fort Lauderdale | 15,091 | 75.4% | 2.68% | -8 min | 50 |
| LGA→FLL New York to Fort Lauderdale | 13,726 | 72.7% | 2.75% | -6 min | 44 |
| EWR→MIA Newark to Miami | 12,508 | 75.8% | 2.55% | -8 min | 52 |
| JFK→FLL New York to Fort Lauderdale | 11,649 | 72.7% | 2.51% | -5 min | 46 |
JFK → MIA is the most reliable pairing for this journey at 75.3% on time, against 72.7% for LGA → FLL.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Grouped by DOT city market, which places Newark with the New York airports and Baltimore with the Washington ones.
Individual flights on this route
The same route is not equally reliable at every hour. These are the flight numbers with enough operating history to judge separately.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| DL1514 Delta Air Lines | 11:10 AM | 783 | 77.2% |
| DL1528 Delta Air Lines | 7:00 AM | 777 | 86.1% |
| DL1428 Delta Air Lines | 7:55 PM | 733 | 63.8% |
| AA1032 American Airlines | 6:30 AM | 627 | 90.8% |
| AA688 American Airlines | 11:00 AM | 601 | 77.9% |
| AA1174 American Airlines | 6:30 PM | 564 | 71.9% |
| AA2603 American Airlines | 5:29 PM | 525 | 67.3% |
| AA655 American Airlines | 5:25 AM | 514 | 87.0% |
| AA2017 American Airlines | 7:29 AM | 458 | 85.0% |
| F91809 Frontier Airlines | 6:00 AM | 350 | 75.1% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Flight numbers with fewer than 270 operations on this route, or no longer scheduled, are not listed.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 9.2 percentage points.
By month
July is historically the weakest month and November the strongest, a spread of 21.0 percentage points.
Historical trend
On-time arrival rate by month.
Over the most recent 12 months (2025-07 to 2026-06), on-time arrivals averaged 77.2% against 74.7% in the 12 months before — improving by 2.5 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and methodology
All figures on this page are calculated by FlyerIntel from 15,464 JFK → MIA flight records published by the US DOT Bureau of Transportation Statistics, covering July 2023 – June 2026. A flight is counted as delayed when it arrives 15 or more minutes after its scheduled arrival time, following BTS methodology. Cancelled and diverted flights have no arrival time and are excluded from on-time rates rather than counted as late.