Carrier route record
MQMIA→CVG
Envoy Air · Miami to Cincinnati
- Flights
- 787
- Period
- July 2025 to June 2026
- Share of route
- 79%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on MIA to CVG lands a B+, about a point 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 about 45 minutes on average. That is a workable record, not a spotless one. That rests on 787 flights, with a median arrival 6 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Envoy on MIA to CVG from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.7%
Arrivals under 15 minutes late, of 781 completed flights
Avg delay
45 min
Across delayed arrivals only, not all flights
Cancelled
0.64%
National rate is 1.81%
Whole route
77.4%
Every carrier on MIA to CVG, 998 flights
These figures cover 787 flights between July 2025 and June 2026. The median arrival is 6 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 CVG
Envoy flew 787 of the 998 flights on MIA to CVG, most of the route. Its 78.7% on time is about level with the route as a whole at 77.4%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Delta at 100.0% to Republic at 60.0%. 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| Envoy Air (this page) | 787 | 78.7% | 45 min | 0.64% | B+ |
| American Airlinesthin sample | 76 | 78.7% | 102 min | 1.32% | B |
| Frontier Airlinesthin sample | 129 | 69.0% | 88 min | 2.33% | C |
| Republic Airwaysthin sample | 5 | 60.0% | 60 min | 0.00% | D+ |
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 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–8am—
- 8am–11am45 flights97.8%
- 11am–2pm—
- 2pm–5pm200 flights67.3%
- 5pm–8pm233 flights84.3%
- 8pm–5am309 flights79.2%
Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 97.8% of the time, against 67.3% for the afternoon window. That is 31 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 309 flights scheduled in it.
Across the year
Envoy on MIA to CVG through the year
August is the worst month at 51.6% on time, 42 points below June, the best at 93.2%. 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, Tuesday is the strongest day at 87.4% on time and Sunday the weakest at 69.1%. 18 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Envoy runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 7,400 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.
- 45%Late-arriving aircraft
- 34%National Airspace System
- 15%Carrier
- 6%Extreme weather
- 0%Security
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 7,400 reported delay minutes here, that single category outweighs weather by 7 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. The split is drawn from 7,400 reported delay minutes.
34% 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 2,488 minutes out of 7,400, against a national NAS share of 21%.
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 82.2% on time across 782 flights, 4 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 4 points of difference.
One caution: this is a thin sample. 787 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 CVG
Put together: treat all of this as provisional. 787 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 78.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 781 completed flights over 12 months sit behind that.
Related
Where to go next
- MIA to CVG, every carrier
- Envoy on CVG to MIA, the return leg
- Frontier Airlines on MIA to CVG69.0%
- Envoy Air network-wide record
- Miami International (MIA) delay statistics
- Cincinnati/Northern Kentucky International (CVG) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.