Carrier route record

MQMIA→ATL

Envoy Air · Miami to Atlanta

Flights: 225
Period: July 2025 to June 2026
Share of route: 4%
Carriers: 6

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

Envoy on MIA to ATL lands a B, level with the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 225 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 3,300 at 76.7% on time.

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

On time

78.3%

Arrivals under 15 minutes late, of 221 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

1.33%

National rate is 1.81%

Whole route

73.7%

Every carrier on MIA to ATL, 6,223 flights

These figures cover 225 flights between July 2025 and June 2026. The median arrival is 4 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

Envoy against every carrier on MIA to ATL

Envoy flew 225 of the 6,223 flights on MIA to ATL, about 4% of it. Its 78.3% on time is 5 points better than the route as a whole, which runs 73.7%. Ranked by on-time rate it is first of six carriers on the route, where the range runs from Envoy at 78.3% to Republic at 65.9%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 76.7% of the time; American Airlines manages 67.5%. Sample sizes sit next to every figure, because a two-point gap across 1,524 flights means less than a ten-point one.

On-time performance by carrier on MIA to ATL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	225	78.3%	47 min	1.33%	B
Delta Air Lines	3,300	76.7%	83 min	1.39%	B
Spirit Airlinesthin sample	269	74.4%	71 min	4.09%	C−
Frontier Airlines	861	71.8%	79 min	1.86%	C
American Airlines	1,524	67.5%	82 min	0.79%	C+
Republic Airwaysthin sample	44	65.9%	60 min	0.00%	C+

Delta leads American by 9 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Departure window

When Envoy runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 points, against 9 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am41 flights85.0%
8am–11am21 flights—
11am–2pm—
2pm–5pm128 flights75.4%
5pm–8pm—
8pm–5am35 flights71.4%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 85.0% of the time, against 71.4% for the overnight window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 128 flights scheduled in it.

Across the year

Envoy on MIA to ATL through the year

Jul–Sep 202575 flights61.3%
Oct–Dec 202599 flights87.6%
Jan–Mar 202645 flights86.0%
Apr–Jun 20266 flights—

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 78.3% on time across 225 flights.

Envoy on MIA to ATL did not run the same all year. Its best quarter was Oct–Dec 2025 at 87.6% on time and its weakest Jul–Sep 2025 at 61.3%, a swing of 26 points on roughly 75 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Wednesday is the strongest day at 90.3% on time and Sunday the weakest at 68.6%. 22 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Envoy 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 2,259 reported delay minutes.

National Airspace System
32%
Late-arriving aircraft
31%
Extreme weather
26%
Carrier
12%

Extreme weather accounts for 26% 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 4.1 times the usual weather exposure. The split is drawn from 2,259 reported delay minutes.

32% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 727 minutes out of 2,259, against a national NAS share of 21%.

Cancellations sit at 1.33% against a national 1.81%, which is ordinary. Diversions add another 0.44%.

Connections and stage length

What a delay here costs

5.0% 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 roughly 45 minutes, which a normal layover absorbs.

The 594 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 74.6% on time across 227 flights, 4 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 4 points of difference.

One caution: this is a thin sample. 225 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking Envoy on MIA to ATL

Put together: treat all of this as provisional. 225 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 78.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 221 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