Route profile
EWR→MIA
Flight reliability, delays and best times to fly from Newark to Miami, 1,085 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 17% of comparable major US routes (4,598 compared)
Calculated from 12,777 flights. How this is calculated
EWR → MIA arrives on time 75.7% of the time; the return trip, MIA → EWR, arrives on time 72.4% of the time, a 3.2-point gap between the two directions of the same city pair.
EWR → MIA spends 33.5 minutes on the ground on a 1,085-mile trip: 24.0 minutes from pushback to wheels-up at EWR and 9.5 minutes from touchdown to gate at MIA.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Why EWR → MIA flights are cancelled
July 2023 – July 2026
EWR → MIA cancelled 339 of 12,777 scheduled flights — about 1 in every 38. The reason filed most often was extreme weather, 66.4% of the cancellations coded on this route — about 1 in every 57 scheduled flights.
Share of cancellations
Of 339 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.
225 cancellations, 66.4% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
64 cancellations, 18.9% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
50 cancellations, 14.7% 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.
339 coded cancellations were recorded on EWR → MIA; the section appears from 50.
When it goes wrong
July 2023 – July 2026
56 min late
against a median of 8 min early
EWR → MIA has an average that understates its risk: a typical arrival is 8 min early, but the worst tenth are 64 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 12,777 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at MIA after arriving from EWR.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 37% | Likely to miss |
| 45 min | 24% | High risk |
| 60 min | 17% | High risk |
| 90 min | 9.4% | Some risk |
| 120 min | 6.1% | 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 2.65% of the time and diverts 0.31% of the time, which a late arrival never shows up in.
Chance of missing is the share of 12,399 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 56 minutes late (90th-percentile gate arrival delay), over 12,777 operations.
Any other layover length: connection checker.
Best time to fly
EWR → MIA flights departing 5–9 AM arrived on time 88.0% of the time, against 61.5% for 6–9 PM departures, a gap of 26.5 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (EWR).
Hour of departure matters more than day of the week: hourly averages sit a typical 11.0 points from the route-wide rate, weekday averages 3.4 points.
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
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On-time rate, % · stronger color, fewer on time
- 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 after 7 PM (1,331 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 |
|---|---|---|---|---|---|---|---|
| 5 AM–6 AM | 93.5% on time159 flights | 91.0% on time149 flights | 92.6% on time153 flights | 91.7% on time159 flights | 96.9% on time160 flights | 94.8% on time160 flights | 90.8% on time160 flights |
| 6 AM–7 AM | 91.7% on time176 flights | 92.0% on time171 flights | 91.8% on time176 flights | 93.6% on time175 flights | 91.4% on time175 flights | 91.1% on time174 flights | 84.5% on time170 flights |
| 7 AM–8 AM | 84.7% on time192 flights | 90.9% on time203 flights | 83.8% on time193 flights | 86.8% on time194 flights | 84.5% on time187 flights | 83.2% on time201 flights | 84.5% on time202 flights |
| 8 AM–9 AM | 82.4% on time121 flights | 83.9% on time122 flights | 119 flights, too few to score | 80.0% on time120 flights | 117 flights, too few to score | 104 flights, too few to score | 117 flights, too few to score |
| 9 AM–10 AM | 61 flights, too few to score | 60 flights, too few to score | 57 flights, too few to score | 65 flights, too few to score | 70 flights, too few to score | 78 flights, too few to score | 78 flights, too few to score |
| 10 AM–11 AM | 55 flights, too few to score | 54 flights, too few to score | 54 flights, too few to score | 53 flights, too few to score | 52 flights, too few to score | 46 flights, too few to score | 53 flights, too few to score |
| 11 AM–12 PM | 79.5% on time158 flights | 85.1% on time155 flights | 84.2% on time156 flights | 71.4% on time152 flights | 70.0% on time160 flights | 71.7% on time153 flights | 73.1% on time150 flights |
| 12 PM–1 PM | 75.2% on time137 flights | 80.5% on time156 flights | 80.7% on time146 flights | 70.1% on time147 flights | 74.0% on time152 flights | 77.1% on time146 flights | 71.3% on time148 flights |
| 1 PM–2 PM | 90 flights, too few to score | 84 flights, too few to score | 82 flights, too few to score | 92 flights, too few to score | 93 flights, too few to score | 72 flights, too few to score | 86 flights, too few to score |
| 2 PM–3 PM | 82 flights, too few to score | 71 flights, too few to score | 76 flights, too few to score | 80 flights, too few to score | 84 flights, too few to score | 83 flights, too few to score | 87 flights, too few to score |
| 3 PM–4 PM | 75 flights, too few to score | 87 flights, too few to score | 92 flights, too few to score | 71 flights, too few to score | 89 flights, too few to score | 63 flights, too few to score | 79 flights, too few to score |
| 4 PM–5 PM | 74 flights, too few to score | 67 flights, too few to score | 66 flights, too few to score | 71 flights, too few to score | 61 flights, too few to score | 79 flights, too few to score | 61 flights, too few to score |
| 5 PM–6 PM | 63 flights, too few to score | 47 flights, too few to score | 42 flights, too few to score | 45 flights, too few to score | 48 flights, too few to score | 66 flights, too few to score | 48 flights, too few to score |
| 6 PM–7 PM | 60.6% on time214 flights | 68.4% on time203 flights | 60.9% on time201 flights | 50.5% on time212 flights | 52.2% on time218 flights | 60.5% on time173 flights | 53.7% on time208 flights |
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 93.1% on time from 1,100 flights
- 6 AM: 90.9% on time from 1,217 flights
- 7 AM: 85.5% on time from 1,372 flights
- 8 AM: 80.9% on time from 820 flights
- 9 AM: 74.1% on time from 469 flights
- 10 AM: 76.9% on time from 367 flights
- 11 AM: 76.4% on time from 1,084 flights
- 12 PM: 75.6% on time from 1,032 flights
- 1 PM: 77.0% on time from 599 flights
- 2 PM: 64.4% on time from 563 flights
- 3 PM: 69.6% on time from 556 flights
- 4 PM: 62.3% on time from 479 flights
- 5 PM: 69.7% on time from 359 flights
- 6 PM: 58.0% on time from 1,429 flights
- 7 PM: 64.8% on time from 581 flights
- 8 PM: 65.9% on time from 692 flights
- 9 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why EWR → MIA runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding and fueling, all within the carrier’s 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 EWR → MIA. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on EWR → MIA, at 38.4%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 88.0% of the time and 6–9 PM departures 61.5%.
How this route holds up in bad weather
July 2023 – July 2026
Bad weather raises cancellations by a similar amount at both ends of EWR to MIA: 3.3 times the normal rate at EWR and 3.3 times at MIA. Cancelled in bad weather against normal hours: EWR 6.9% against 2.1%, MIA 4.5% against 1.3%. 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 | EWR | MIA |
|---|---|---|
| Cancelled in bad weather | 6.9% | 4.5% |
| Cancelled in normal hours | 2.1% | 1.3% |
| Arrived on time, bad weather | 65.8% | 50.6% |
| Arrived on time, normal hours | 80.0% | 74.1% |
| Departures in bad weather | 51,613 | 15,746 |
Of the carriers on this route, United Airlines (5.3% cancelled against 8.9% for the other carriers at EWR) cancelled the fewest departures from EWR in bad weather and Spirit Airlines (8.7% cancelled against 6.4% for the other carriers at EWR) the most.
This route’s airlines in bad weather at EWR
All departures from EWR| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| United Airlines | 28,226 | 5.3%below the others | 8.9% |
| JetBlue | 2,326 | 6.6%about level | 6.7% |
| American Airlines | 2,735 | 7.2%about level | 7.0% |
| Spirit Airlines | 3,882 | 8.7%above the others | 6.4% |
These are airport figures, not route figures: every scheduled departure from EWR and MIA, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from EWR on every route.
Weather source and limits. In full: EWR (airlines), MIA, 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 |
|---|---|---|---|---|---|
| United Airlines | 6,829 | 75.3% | 2.36% | -7 min | 9.0% |
| American Airlines | 4,312 | 77.5% | 2.83% | -9 min | 9.1% |
| Spirit Airlines | 1,424 | 72.4% | 3.65% | -10 min | 13.2% |
| JetBlue | 201 | 71.8% | 1.99% | -4 min | 10.8% |
United Airlines flew 53.5% of the 12,766 flights listed. Spirit Airlines cancelled 3.65% of its flights here against 1.99% for JetBlue.
American Airlines arrived on time 5.7 percentage points more often than JetBlue on this route.
Other ways to fly New York to Miami
Airport pairs in the same two city markets, as the DOT defines them.
| Route | Flights | On time | Cancelled | Median delay | Score |
|---|---|---|---|---|---|
| LGA→MIA New York to Miami | 17,949 | 74.0% | 2.69% | -8 min | 46 |
| JFK→MIA New York to Miami | 15,837 | 75.0% | 2.10% | -7 min | 51 |
| EWR→FLL Newark to Fort Lauderdale | 15,393 | 75.3% | 2.81% | -8 min | 49 |
| LGA→FLL New York to Fort Lauderdale | 14,072 | 72.5% | 2.86% | -6 min | 43 |
| EWR→MIA this route Newark to Miami | 12,777 | 75.7% | 2.65% | -8 min | 51 |
| JFK→FLL New York to Fort Lauderdale | 11,955 | 72.5% | 2.76% | -6 min | 45 |
EWR → MIA is the most reliable pairing for this journey at 75.7% on time, against 72.5% for LGA → FLL.
Flying to MIA from the New York area? Compare EWR, LGA, JFK for MIA, 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.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 10.8 percentage points.
By month
- Jan: 73.6%
- Feb: 79.0%
- Mar: 76.1%
- Apr: 79.4%
- May: 75.0%
- Jun: 77.2%
- Jul: 64.0%
- Aug: 72.4%
- Sep: 76.5%
- Oct: 83.1%
- Nov: 80.3%
- Dec: 72.2%
July is historically the weakest month and October the strongest, a spread of 19.1 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 59.8% from 296 flights
- August 2023: 74.2% from 305 flights
- September 2023: 69.0% from 325 flights
- October 2023: 86.2% from 378 flights
- November 2023: 85.0% from 414 flights
- December 2023: 71.1% from 455 flights
- January 2024: 67.2% from 430 flights
- February 2024: 81.8% from 411 flights
- March 2024: 74.8% from 412 flights
- April 2024: 78.4% from 408 flights
- May 2024: 74.7% from 367 flights
- June 2024: 73.5% from 272 flights
- July 2024: 60.5% from 300 flights
- August 2024: 65.7% from 277 flights
- September 2024: 82.8% from 277 flights
- October 2024: 87.0% from 302 flights
- November 2024: 81.6% from 343 flights
- December 2024: 71.8% from 403 flights
- January 2025: 74.4% from 426 flights
- February 2025: 77.8% from 404 flights
- March 2025: 78.1% from 419 flights
- April 2025: 78.2% from 349 flights
- May 2025: 61.7% from 288 flights
- June 2025: 73.4% from 262 flights
- July 2025: 67.0% from 302 flights
- August 2025: 76.1% from 305 flights
- September 2025: 78.5% from 283 flights
- October 2025: 75.3% from 307 flights
- November 2025: 72.7% from 327 flights
- December 2025: 73.9% from 394 flights
- January 2026: 79.4% from 382 flights
- February 2026: 77.1% from 351 flights
- March 2026: 75.4% from 396 flights
- April 2026: 81.8% from 353 flights
- May 2026: 87.2% from 315 flights
- June 2026: 84.4% from 270 flights
- July 2026: 69.2% from 269 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 77.5% against 75.2% in the 12 months before — improving by 2.3 percentage points.
Data and methodology
Calculated by FlyerIntel from 12,777 EWR → MIA 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