Miami (MIA) to Newark (EWR): On-Time Performance
Data through July 2026
When you fly MIA to EWR matters as much as anything else about the booking: the route swung from 83% on-time in September 2024 to just 49% in May 2025. Across the full period the route averages 70% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 57%), which matters most in the rough months.
- On-time
- 70%
- arrived <15 min late
- Avg delay
- 25 min
- completed flights
- Cancelled
- 2.4%
- Flights/day
- 11
- last 12 months
- Duration
- 3h 8m
- scheduled
- Distance
- 1,085 mi
Best airline from MIA to EWR
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 73% | 22 min | 3.4% | 787 |
| United Airlines | 73% | 24 min | 1.9% | 4,594 |
| American Airlines | 66% | 28 min | 2.8% | 2,915 |
Monthly on-time trend
Best time to fly from MIA to EWR
Aim for departures around 5 a.m. (94% on-time); avoid 5 p.m. departures (48%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 28 min |
| Tuesdaybest | 76% | 18 min |
| Wednesday | 75% | 20 min |
| Thursday | 67% | 29 min |
| Friday | 69% | 25 min |
| Saturday | 71% | 27 min |
| Sunday | 65% | 32 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations24%
- National airspace system40%
- Weather4%
Frequently asked questions
- How often are flights from MIA to EWR delayed?
- 30% of MIA–EWR flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 25 minutes.
- Which airline is most reliable from MIA to EWR?
- Spirit Airlines has the best on-time record on this route at 73%, based on 787 flights. 3 airlines flew MIA–EWR frequently enough to compare in this period.
- What is the best time of day to fly from MIA to EWR?
- Departures around 5 a.m. have the best record (94% on-time), while departures around 5 p.m. have the worst (48%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to EWR?
- The scheduled MIA–EWR flight time averages 3h 8m over 1,085 miles. Actual arrival times vary — flights on this route land 15+ minutes late 30% of the time.
- How often are MIA to EWR flights cancelled?
- 2.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from MIA to EWR?
- May 2025 was the roughest month in this dataset, with only 49% of arrivals on time. The best was September 2024 at 83%. If your dates are flexible, that 35-point gap is worth planning around.
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Based on 8,301 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.