Carrier route record

AAEWR→MIA

American Airlines · Newark to Miami

Flights: 1,425
Period: July 2025 to June 2026
Share of route: 36%
Carriers: 4

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

American on EWR to MIA lands a B, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 1,425 flights, with a median arrival 12 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate American on EWR to MIA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

80.5%

Arrivals under 15 minutes late, of 1,376 completed flights

Avg delay

84 min

Across delayed arrivals only, not all flights

Cancelled

2.95%

National rate is 1.81%

Whole route

77.4%

Every carrier on EWR to MIA, 3,985 flights

These figures cover 1,425 flights between July 2025 and June 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Carrier by carrier

American against every carrier on EWR to MIA

American flew 1,425 of the 3,985 flights on EWR to MIA, about 36% of it. Its 80.5% on time is 3 points better than the route as a whole, which runs 77.4%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Envoy at 100.0% to Spirit at 60.6%. Two 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 EWR to MIA
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	1	100.0%	—	0.00%	A+
American Airlines (this page)	1,425	80.5%	84 min	2.95%	B
United Airlines	2,251	77.6%	72 min	2.18%	B
Spirit Airlinesthin sample	308	60.6%	76 min	4.55%	D−

Flight by flight

American flight numbers on EWR to MIA

AA 119605:4094.5% · 365 flights

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 31 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am644 flights91.2%
8am–11am85 flights91.8%
11am–2pm361 flights76.9%
2pm–5pm—
5pm–8pm335 flights60.9%
8pm–5am—

Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 60.9% on time, against 91.8% 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 5am–8am window is the busiest, with 644 flights scheduled in it.

Across the year

American on EWR to MIA through the year

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

July is the worst month at 62.5% on time, 25 points below June, the best at 87.5%. 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, Tuesday is the strongest day at 84.8% on time and Sunday the weakest at 73.2%. 12 points is a smaller lever than departure hour, but it is free.

Delay causes

Why American runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 22,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
45%
National Airspace System
21%
Carrier
21%
Extreme weather
12%
Security
0%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.0 times the usual weather exposure. The split is drawn from 22,370 reported delay minutes.

45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 22,000 reported delay minutes here, that single category outweighs weather by 4 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit.

Cancellations run at 2.95%, against 1.81% nationally. That is roughly 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

7.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 68.5% on time across 1,424 flights, 12 points below 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 12 points of difference.

The sample behind these figures is 1,425 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 EWR to MIA

Put together: the delay figures matter less here than the 2.95% cancellation rate. A late arrival costs you an hour and a half; 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. 1,376 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures