Route profile
MIA→JFK
Flight reliability, delays and best times to fly from Miami to New York, 1,089 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 6% of comparable major US routes (4,598 compared)
Calculated from 15,830 flights. How this is calculated
MIA → JFK arrives on time 71.5% of the time; the return trip, JFK → MIA, arrives on time 75.0% of the time, a 3.5-point gap between the two directions of the same city pair.
MIA → JFK spends 33.3 minutes on the ground on a 1,089-mile trip: 22.0 minutes from pushback to wheels-up at MIA and 11.4 minutes from touchdown to gate at JFK.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
On-time performance swings unusually widely by time of day here, wider than 97% of 4,023 comparable routes.
89.8% on time for 5–9 AM departures, against 54.8% for 6–9 PM.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,023 in the comparison.
Why MIA → JFK flights are cancelled
July 2023 – July 2026
MIA → JFK cancelled 338 of 15,830 scheduled flights — about 1 in every 47. The reason filed most often was extreme weather, 63.9% of the cancellations coded on this route — about 1 in every 73 scheduled flights.
Share of cancellations
Of 338 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
216 cancellations, 63.9% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
88 cancellations, 26.0% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
34 cancellations, 10.1% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
338 coded cancellations were recorded on MIA → JFK; the section appears from 50.
When it goes wrong
July 2023 – July 2026
74 min late
against a median of 4 min early
MIA → JFK has an average that understates its risk: a typical arrival is 4 min early, but the worst tenth are 78 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 15,830 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at JFK after arriving from MIA.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 43% | Likely to miss |
| 45 min | 28% | High risk |
| 60 min | 20% | High risk |
| 90 min | 12% | Some risk |
| 120 min | 7.9% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 2.14% of the time and diverts 0.27% of the time, which a late arrival never shows up in.
Chance of missing is the share of 15,449 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 74 minutes late (90th-percentile gate arrival delay), over 15,830 operations.
Any other layover length: connection checker.
Best time to fly
MIA → JFK flights departing 5–9 AM arrived on time 89.8% of the time, against 54.8% for 6–9 PM departures, a gap of 35.0 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (MIA).
Hour of departure matters more than day of the week: hourly averages sit a typical 13.3 points from the route-wide rate, weekday averages 3.5 points.
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
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| 9 PM–10 PM |
On-time rate, % · stronger color, fewer on time
- 30–39
- 40–49
- 50–59
- 60–69
- 70–79
- 80–89
- 90–99
- Fewer than 120 flights, not scored
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.
No slot is named best or worst: too few reach 500 flights. Departures before 7 AM and after 10 PM (771 flights) are not drawn: no slot in those hours has enough flights to score.
View as tableHide table
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| 7 AM–8 AM | 89.7% on time308 flights | 90.9% on time309 flights | 91.5% on time309 flights | 92.2% on time308 flights | 89.8% on time306 flights | 92.1% on time283 flights | 87.1% on time309 flights |
| 8 AM–9 AM | 84.2% on time137 flights | 89.6% on time135 flights | 90.6% on time139 flights | 91.5% on time131 flights | 78.7% on time138 flights | 94.6% on time131 flights | 82.7% on time134 flights |
| 9 AM–10 AM | 97 flights, too few to score | 96 flights, too few to score | 96 flights, too few to score | 98 flights, too few to score | 101 flights, too few to score | 97 flights, too few to score | 96 flights, too few to score |
| 10 AM–11 AM | 72 flights, too few to score | 73 flights, too few to score | 71 flights, too few to score | 73 flights, too few to score | 71 flights, too few to score | 76 flights, too few to score | 74 flights, too few to score |
| 11 AM–12 PM | 79.8% on time202 flights | 77.3% on time201 flights | 75.9% on time198 flights | 73.8% on time198 flights | 71.1% on time199 flights | 76.3% on time198 flights | 73.1% on time201 flights |
| 12 PM–1 PM | 80 flights, too few to score | 85 flights, too few to score | 85 flights, too few to score | 81 flights, too few to score | 82 flights, too few to score | 54 flights, too few to score | 82 flights, too few to score |
| 1 PM–2 PM | 101 flights, too few to score | 92 flights, too few to score | 94 flights, too few to score | 98 flights, too few to score | 101 flights, too few to score | 95 flights, too few to score | 102 flights, too few to score |
| 2 PM–3 PM | 89 flights, too few to score | 91 flights, too few to score | 94 flights, too few to score | 88 flights, too few to score | 89 flights, too few to score | 86 flights, too few to score | 87 flights, too few to score |
| 3 PM–4 PM | 71.5% on time219 flights | 68.2% on time201 flights | 73.0% on time190 flights | 64.8% on time217 flights | 66.7% on time217 flights | 68.9% on time200 flights | 56.5% on time223 flights |
| 4 PM–5 PM | 86 flights, too few to score | 78 flights, too few to score | 83 flights, too few to score | 87 flights, too few to score | 87 flights, too few to score | 95 flights, too few to score | 86 flights, too few to score |
| 5 PM–6 PM | 50.0% on time128 flights | 60.8% on time133 flights | 68.2% on time131 flights | 56.1% on time125 flights | 68.5% on time127 flights | 50.0% on time128 flights | 47.1% on time129 flights |
| 6 PM–7 PM | 55.0% on time134 flights | 63.6% on time134 flights | 64.6% on time130 flights | 53.1% on time131 flights | 57.4% on time134 flights | 52.9% on time125 flights | 39.2% on time134 flights |
| 7 PM–8 PM | 57.6% on time304 flights | 61.0% on time273 flights | 58.2% on time272 flights | 48.7% on time302 flights | 58.1% on time301 flights | 55.3% on time273 flights | 45.8% on time305 flights |
| 8 PM–9 PM | 47 flights, too few to score | 43 flights, too few to score | 43 flights, too few to score | 44 flights, too few to score | 46 flights, too few to score | 40 flights, too few to score | 47 flights, too few to score |
| 9 PM–10 PM | 63.1% on time187 flights | 67.4% on time188 flights | 64.3% on time187 flights | 61.3% on time185 flights | 67.2% on time185 flights | 63.2% on time188 flights | 54.5% on time186 flights |
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 90.8% on time from 721 flights
- 7 AM: 90.5% on time from 2,132 flights
- 8 AM: 87.4% on time from 945 flights
- 9 AM: 84.6% on time from 681 flights
- 10 AM: 79.0% on time from 510 flights
- 11 AM: 75.3% on time from 1,397 flights
- 12 PM: 81.8% on time from 549 flights
- 1 PM: 67.1% on time from 683 flights
- 2 PM: 69.5% on time from 624 flights
- 3 PM: 66.9% on time from 1,467 flights
- 4 PM: 61.9% on time from 602 flights
- 5 PM: 57.4% on time from 901 flights
- 6 PM: 55.2% on time from 922 flights
- 7 PM: 54.9% on time from 2,030 flights
- 8 PM: 53.0% on time from 310 flights
- 9 PM: 63.1% on time from 1,306 flights
- 10 PM to 11 PM: too few flights to score
Why MIA → JFK runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for MIA → JFK. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on MIA → JFK, at 38.9%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 89.8% of the time and 6–9 PM departures 54.8%.
How this route holds up in bad weather
July 2023 – July 2026
Bad weather raises cancellations by a similar amount at both ends of MIA to JFK: 3.3 times the normal rate at MIA and 3.5 times at JFK. Cancelled in bad weather against normal hours: MIA 4.5% against 1.3%, JFK 6.0% against 1.7%. Flights that did leave MIA in bad weather arrived on time 50.6% of the time, against 74.1% in normal hours.
Bad weather and normal hours at the airports
Scheduled departures, July 2023 – July 2026| Departures from | MIA | JFK |
|---|---|---|
| Cancelled in bad weather | 4.5% | 6.0% |
| Cancelled in normal hours | 1.3% | 1.7% |
| Arrived on time, bad weather | 50.6% | 64.1% |
| Arrived on time, normal hours | 74.1% | 79.7% |
| Departures in bad weather | 15,746 | 46,497 |
Of the carriers on this route, Delta Air Lines (2.0% cancelled against 4.7% for the other carriers at MIA) cancelled the fewest departures from MIA in bad weather and American Airlines (5.4% cancelled against 4.2% for the other carriers at MIA) the most. One more carrier flies this route but has too few bad-weather departures from MIA to compare.
This route’s airlines in bad weather at MIA
All departures from MIA| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| Delta Air Lines | 1,774 | 2.0%below the others | 4.7% |
| Frontier Airlines | 557 | 3.9%about level | 4.2% |
| American Airlines | 8,534 | 5.4%above the others | 4.2% |
These are airport figures, not route figures: every scheduled departure from MIA and JFK, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from MIA on every route.
Weather source and limits. In full: MIA (airlines), JFK, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| American Airlines | 8,708 | 72.9% | 2.03% | -5 min | 11.2% |
| Delta Air Lines | 4,865 | 71.0% | 1.91% | -3 min | 12.8% |
| JetBlue | 1,902 | 65.0% | 3.26% | -1 min | 18.8% |
| Frontier Airlines | 351 | 77.7% | 1.71% | -10 min | 8.7% |
American Airlines flew 55.0% of the 15,826 flights listed. JetBlue cancelled 3.26% of its flights here against 1.71% for Frontier Airlines.
Frontier Airlines arrived on time 12.7 percentage points more often than JetBlue on this route.
Other ways to fly Miami to New York
Airport pairs in the same two city markets, as the DOT defines them.
| Route | Flights | On time | Cancelled | Median delay | Score |
|---|---|---|---|---|---|
| MIA→LGA Miami to New York | 17,929 | 71.1% | 2.72% | -4 min | 42 |
| MIA→JFK this route Miami to New York | 15,830 | 71.5% | 2.14% | -4 min | 42 |
| FLL→EWR Fort Lauderdale to Newark | 15,386 | 72.9% | 2.65% | -6 min | 43 |
| FLL→LGA Fort Lauderdale to New York | 14,066 | 71.6% | 2.63% | -4 min | 43 |
| MIA→EWR Miami to Newark | 12,771 | 72.4% | 2.66% | -5 min | 42 |
| FLL→JFK Fort Lauderdale to New York | 11,942 | 71.8% | 2.84% | -4 min | 40 |
Flying to JFK from the Miami area? Compare MIA, FLL for JFK, with the same test for what counts as a real difference.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
AA944 (9:50 PM) arrived on time 67.8% of the time, 10.5 points more often than AA1357 (7:30 PM) at 57.3%.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 11.7 percentage points.
By month
- Jan: 72.2%
- Feb: 72.4%
- Mar: 68.7%
- Apr: 73.6%
- May: 72.0%
- Jun: 64.9%
- Jul: 61.1%
- Aug: 65.6%
- Sep: 77.2%
- Oct: 82.7%
- Nov: 79.8%
- Dec: 70.7%
July is historically the weakest month and October the strongest, a spread of 21.6 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 55.0% from 466 flights
- August 2023: 66.3% from 478 flights
- September 2023: 65.7% from 444 flights
- October 2023: 81.2% from 410 flights
- November 2023: 79.1% from 442 flights
- December 2023: 76.1% from 463 flights
- January 2024: 73.9% from 471 flights
- February 2024: 70.0% from 470 flights
- March 2024: 66.2% from 534 flights
- April 2024: 73.9% from 497 flights
- May 2024: 68.3% from 468 flights
- June 2024: 61.6% from 432 flights
- July 2024: 65.4% from 435 flights
- August 2024: 61.3% from 430 flights
- September 2024: 82.3% from 407 flights
- October 2024: 89.5% from 432 flights
- November 2024: 85.2% from 448 flights
- December 2024: 69.4% from 447 flights
- January 2025: 73.0% from 449 flights
- February 2025: 77.2% from 433 flights
- March 2025: 70.5% from 483 flights
- April 2025: 74.4% from 489 flights
- May 2025: 71.5% from 462 flights
- June 2025: 62.7% from 413 flights
- July 2025: 62.9% from 397 flights
- August 2025: 69.5% from 376 flights
- September 2025: 85.4% from 360 flights
- October 2025: 76.2% from 372 flights
- November 2025: 74.5% from 408 flights
- December 2025: 65.5% from 392 flights
- January 2026: 68.9% from 382 flights
- February 2026: 69.2% from 339 flights
- March 2026: 70.0% from 363 flights
- April 2026: 72.1% from 408 flights
- May 2026: 76.8% from 398 flights
- June 2026: 71.3% from 360 flights
- July 2026: 61.5% from 372 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 71.8% against 73.4% in the 12 months before — declining by 1.6 percentage points.
Data and methodology
Calculated by FlyerIntel from 15,830 MIA → JFK flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed