Best Time to Fly MIA to EWR: On-Time Stats by Hour & Airline
Miami International → Newark Liberty International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.0% of Miami (MIA) to Newark (EWR) flights arrived on time (3,951 scheduled flights). That is 5.6 points below the national average of 77.6%.
Among 3 airlines, United Airlines led with 75.1% on time and Spirit Airlines was last with 65.8%.
Over 24 months, Tuesday was the most reliable day (77% on time) and July the worst month (60%).
The cancellation rate was 2.7% (US average 1.8%).
MIA to EWR on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 75.1% | 86 min | 2.2% | 2,248 |
| American Airlines | 68.2% | 72 min | 3.0% | 1,426 |
| Spirit Airlines | 65.8% | 88 min | 5.4% | 276 |
| Envoy Air | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to EWR
On-time arrival % by scheduled departure hour (local time), 8,001 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.5% | 0.0% | 67 |
| 6am–7am | 92.9% | 0.8% | 624 |
| 7am–8am | 88.3% | 0.6% | 509 |
| 8am–9am | 87.4% | 0.6% | 1,028 |
| 9am–10am | 91.2% | 1.1% | 92 |
| 10am–11am | 82.1% | 1.2% | 511 |
| 11am–12pm | 77.3% | 3.4% | 262 |
| 12pm–1pm | 70.5% | 3.0% | 267 |
| 1pm–2pm | 73.2% | 3.1% | 352 |
| 2pm–3pm | 61.3% | 3.0% | 958 |
| 3pm–4pm | 73.8% | 4.5% | 88 |
| 4pm–5pm | 57.3% | 1.0% | 306 |
| 5pm–6pm | 49.1% | 3.3% | 608 |
| 6pm–7pm | 56.2% | 3.9% | 545 |
| 7pm–8pm | 60.7% | 3.5% | 751 |
| 8pm–9pm | 56.4% | 3.6% | 309 |
| 9pm–10pm | 65.0% | 2.6% | 655 |
| 10pm–11pm | 53.2% | 10.1% | 69 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to EWR
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 71.0% | -1.6 pts | 0.0% | 148 |
| Christmas & New Year (Dec 20 - Jan 3) | 69.0% | -3.5 pts | 2.2% | 409 |
| Summer peak (Jun 15 - Aug 15) | 63.3% | -9.2 pts | 5.3% | 1,154 |
| All other days | 72.5% | — | 1.9% | 6,290 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).