Carrier route record

MQCVG→MIA

Envoy Air · Cincinnati to Miami

Flights: 782
Period: July 2025 to June 2026
Share of route: 78%
Carriers: 5

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

Envoy on CVG to MIA lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 782 flights, with a median arrival 5 minutes early.

Set against the rest of the country, Envoy's CVG to MIA record is 5 points better than the US average of 77.6%. That gap is worth roughly 46 fewer late arrivals for every thousand flights.

On time

82.2%

Arrivals under 15 minutes late, of 776 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.64%

National rate is 1.81%

Whole route

80.1%

Every carrier on CVG to MIA, 998 flights

These figures cover 782 flights between July 2025 and June 2026. The median arrival is 5 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 CVG to MIA

Envoy flew 782 of the 998 flights on CVG to MIA, most of the route. Its 82.2% on time is 2 points better than the route as a whole, which runs 80.1%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from Envoy at 82.2% to Delta at 0.0%. Four 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 CVG to MIA
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)	782	82.2%	56 min	0.64%	B+
American Airlinesthin sample	76	75.3%	139 min	1.32%	B
Frontier Airlinesthin sample	128	72.8%	77 min	1.56%	C
Republic Airwaysthin sample	11	54.5%	43 min	0.00%	F+
Delta Air Linesthin sample	1	0.0%	37 min	0.00%	F+

Flight by flight

Envoy flight numbers on CVG to MIA

MQ 363808:4187.0% · 340 flights

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 21 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–8am413 flights89.8%
8am–11am131 flights81.4%
11am–2pm4 flights—
2pm–5pm—
5pm–8pm234 flights69.0%
8pm–5am—

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 89.8% of the time, against 69.0% for the evening window. That is 21 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 413 flights scheduled in it.

Across the year

Envoy on CVG to MIA through the year

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

July is the worst month at 68.9% on time, 26 points below November, the best at 95.2%. 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. March was the busiest month here, with 86 flights.

Across the week, Saturday is the strongest day at 86.1% on time and Sunday the weakest at 77.7%. 8 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 7,682 reported delay minutes.

Carrier
35%
Late-arriving aircraft
31%
National Airspace System
21%
Extreme weather
13%
Security
0%

Extreme weather accounts for 13% 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 7,682 reported delay minutes.

The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,663 of the 7,682 delay minutes reported here.

Cancellations are rare at 0.64%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 4.6% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The 948 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 78.7% on time across 787 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. 782 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 CVG to MIA

Put together: treat all of this as provisional. 782 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 82.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 776 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