Carrier route record

AAMIA→EWR

American Airlines · Miami to Newark

Flights: 1,428
Period: September 2025 to August 2026
Share of route: 36%
Carriers: 3

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with American Airlines.

American on MIA to EWR carries a cancellation problem, not just a delay problem: 3.3% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about seven flights in ten arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,428 flights, with a median arrival 1 minute early.

The national on-time rate over the same period is 77.3%, so American on MIA to EWR runs 9 points behind the country as a whole. Across a thousand flights that is about 89 extra late arrivals.

On time

68.4%

Arrivals under 15 minutes late, of 1,374 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

3.29%

National rate is 1.89%

Whole route

72.2%

Every carrier on MIA to EWR, 3,913 flights

These figures cover 1,428 flights between September 2025 and August 2026. Beyond the headline rate, 13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

American against every carrier on MIA to EWR

American flew 1,428 of the 3,913 flights on MIA to EWR, about 36% of it. Its 68.4% on time is 4 points worse than the route as a whole, which runs 72.2%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from United at 75.5% to Spirit at 64.2%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on MIA to EWR
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlines	2,240	75.5%	88 min	2.37%	B
American Airlines (this page)	1,428	68.4%	72 min	3.29%	C−
Spirit Airlinesthin sample	245	64.2%	84 min	6.12%	D−

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Departure window

When American runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 30 points, against half a point between the best and worst carrier.

5am–8am—
8am–11am364 flights86.4%
11am–2pm103 flights73.5%
2pm–5pm257 flights64.8%
5pm–8pm349 flights56.2%
8pm–5am355 flights62.5%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 56.2% on time, against 86.4% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 364 flights scheduled in it.

Across the year

American on MIA to EWR through the year

Darker means more delays. Figures are on-time percentages.January best, July worst

July is the worst month at 51.3% on time, 29 points below January, the best at 80.5%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 124 flights.

Across the week, Wednesday is the strongest day at 73.7% on time and Sunday the weakest at 60.6%, a spread of 13 points.

Arrival by arrival

How late American on MIA to EWR runs when it is late

American on MIA to EWR often beats the schedule: 348 of 1,374 completed flights, 25%, arrived 15 minutes or more early. The 434 late arrivals split 104 under half an hour, 149 between 30 and 60 minutes, and 181 an hour or more.

15+ min early348 flights25.3%
Within 15 min592 flights43.1%
15–29 min late104 flights7.6%
30–59 min late149 flights10.8%
1–2 hours late116 flights8.4%
2+ hours late65 flights4.7%

Scale runs 0% to 100%.

Share of 1,374 completed flights by arrival against schedule.

87 of 461 late departures made up the time and arrived on time, 19% of them. 60 flights left on time and still arrived late.

The worst days

Worst days for American on MIA to EWR

The latest arrival of the period was on 20 May 2026, 8 hours 55 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across May, July, June and April, with no single month standing out.

The latest arrivals of American on MIA to EWR in the period
Date	Arrived late by	Largest filed cause
20 May 2026	8 hours 55 minutes	Carrier
2 May 2026	8 hours 15 minutes	Late-arriving aircraft
21 July 2026	8 hours 14 minutes	Carrier
22 June 2026	7 hours 53 minutes	National Airspace System
17 April 2026	5 hours 49 minutes	Late-arriving aircraft

Delay causes

Why American runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 31,000 reported delay minutes.

Late-arriving aircraft
40%
National Airspace System
27%
Carrier
27%
Extreme weather
7%
Security
0%

40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 31,000 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 31,370 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 86.4% on time here.

Cancellations run at 3.29%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and stage length

What a delay here costs

13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.

The 1,085 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

The return leg is a different operation and performs like one: it runs 81.3% on time across 1,429 flights, 13 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 13 points of difference.

The sample behind these figures is 1,428 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

What to do with this

Booking American on MIA to EWR

Put together: the delay figures matter less here than the 3.29% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,374 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures