Carrier route record

MQMCI→MIA

Envoy Air · Kansas City to Miami

Flights: 155
Period: July 2025 to June 2026
Share of route: 19%
Carriers: 4

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

Envoy on MCI 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 45 minutes on average. That is a workable record, not a spotless one. That rests on 155 flights, with a median arrival 10 minutes early.

Set against the rest of the country, Envoy's MCI to MIA record is 5 points better than the US average of 77.6%. That gap is worth roughly 54 fewer late arrivals for every thousand flights.

On time

83.0%

Arrivals under 15 minutes late, of 153 completed flights

Avg delay

45 min

Across delayed arrivals only, not all flights

Cancelled

1.29%

National rate is 1.81%

Whole route

83.2%

Every carrier on MCI to MIA, 801 flights

These figures cover 155 flights between July 2025 and June 2026. The median arrival is 10 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 MCI to MIA

Envoy flew 155 of the 801 flights on MCI to MIA, about 19% of it. Its 83.0% on time is about level with the route as a whole at 83.2%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from American at 88.9% to Republic at 60.0%. 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 MCI to MIA
Airline	Flights	On time	Avg delay	Cancelled	Grade
American Airlines	460	88.9%	122 min	1.74%	A
Envoy Air (this page)thin sample	155	83.0%	45 min	1.29%	B
Southwest Airlinesthin sample	181	70.0%	48 min	0.55%	C+
Republic Airwaysthin sample	5	60.0%	31 min	0.00%	D+

Departure window

When Envoy runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 155 flights.

5am–8am1 flights—
8am–11am—
11am–2pm59 flights86.2%
2pm–5pm—
5pm–8pm95 flights80.9%
8pm–5am—

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 11am–2pm slot at 86.2% on time, ahead of 5pm–8pm at 80.9%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 5pm–8pm window is the busiest, with 95 flights scheduled in it.

Across the year

Envoy on MCI to MIA through the year

Oct–Dec 202535 flights70.6%
Jan–Mar 202640 flights84.6%
Apr–Jun 202680 flights87.5%

Scale runs 60% 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 83.0% on time across 155 flights.

Envoy on MCI to MIA did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.5% on time and its weakest Oct–Dec 2025 at 70.6%, a swing of 17 points on roughly 52 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.

Delay causes

Why Envoy runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 43% of the 1,159 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
43%
National Airspace System
36%
Carrier
21%
Extreme weather
0%

43% 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 1,159 reported delay minutes here, that single category outweighs weather by 43 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 1,159 reported delay minutes.

36% 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 420 minutes out of 1,159, against a national NAS share of 21%.

Cancellations sit at 1.29% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 2.0% 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 1,251 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 88.8% on time across 154 flights, 6 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 6 points of difference.

One caution: this is a thin sample. 155 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 MCI to MIA

Put together: treat all of this as provisional. 155 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 83.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 153 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