Carrier route record

MQMIA→DTW

Envoy Air · Miami to Detroit

Flights: 108
Period: September 2025 to August 2026
Share of route: 6%
Carriers: 6

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

Envoy on MIA to DTW lands a B+, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 108 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 930 at 76.9% on time.

Set against the rest of the country, Envoy's MIA to DTW record is 5 points better than the US average of 77.3%. That gap is worth roughly 51 fewer late arrivals for every thousand flights.

On time

82.4%

Arrivals under 15 minutes late, of 108 completed flights

Avg delay

52 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.89%

Whole route

73.5%

Every carrier on MIA to DTW, 1,755 flights

These figures cover 108 flights between September 2025 and August 2026. The median arrival is 14 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.

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Carrier by carrier

Envoy against every carrier on MIA to DTW

Envoy flew 108 of the 1,755 flights on MIA to DTW, about 6% of it. Its 82.4% on time is 9 points better than the route as a whole, which runs 73.5%. Ranked by on-time rate it is first of six carriers on the route, where the range runs from Envoy at 82.4% to Republic at 57.1%. Three 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 76.9% of the time; American Airlines manages 70.4%. Sample sizes sit next to every figure, because a two-point gap across 394 flights means less than a ten-point one.

On-time performance by carrier on MIA to DTW
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	108	82.4%	52 min	0.00%	B+
Delta Air Lines	930	76.9%	92 min	1.08%	B
American Airlines	394	70.4%	64 min	1.02%	C
Frontier Airlinesthin sample	64	67.7%	88 min	3.12%	C−
Spirit Airlinesthin sample	245	63.8%	69 min	4.08%	D−
Republic Airwaysthin sample	14	57.1%	126 min	0.00%	D+

Delta leads American by 7 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

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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 108 flights.

5am–8am—
8am–11am—
11am–2pm35 flights85.7%
2pm–5pm73 flights80.8%
5pm–8pm—
8pm–5am—

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

The 11am–2pm window is the strongest at 85.7% on time. The full set of windows spans 5 points.

Across the year

Envoy on MIA to DTW through the year

Oct–Dec 20258 flights—
Jan–Mar 202645 flights75.6%
Apr–Jun 202634 flights94.1%
Jul–Sep 202621 flights—

Scale runs 65% to 100%. 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 82.4% on time across 108 flights.

Split by quarter, Envoy on MIA to DTW logged 8 flights in Oct–Dec 2025, 45 flights in Jan–Mar 2026, 34 flights in Apr–Jun 2026 and 21 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 82.4% annual figure is the one to use.

Arrival by arrival

How late Envoy on MIA to DTW runs when it is late

Envoy on MIA to DTW often beats the schedule: 53 of 108 completed flights, 49%, arrived 15 minutes or more early. Most of the lateness is short. 10 of the 19 late arrivals were under half an hour behind, and 5 reached an hour or more.

15+ min early53 flights49.1%
Within 15 min36 flights33.3%
15–29 min late10 flights9.3%
30–59 min late4 flights3.7%
1–2 hours late3 flights2.8%
2+ hours late2 flights1.9%

Scale runs 0% to 100%.

Share of 108 completed flights by arrival against schedule.

5 of 20 late departures made up the time and arrived on time, 25% of them. 4 flights left on time and still arrived late.

The worst days

Worst days for Envoy on MIA to DTW

The latest arrival of the period was on 1 July 2026, 3 hours 8 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across July, April, December, August and March, with no single month standing out.

The latest arrivals of Envoy on MIA to DTW in the period
Date	Arrived late by	Largest filed cause
1 July 2026	3 hours 8 minutes	Extreme weather
2 April 2026	2 hours 48 minutes	Late-arriving aircraft
29 December 2025	1 hour 58 minutes	Extreme weather
13 August 2026	1 hour 17 minutes	Carrier
13 March 2026	1 hour 1 minute	Late-arriving aircraft

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 983 reported delay minutes.

Extreme weather
38%
Late-arriving aircraft
26%
National Airspace System
18%
Carrier
18%

Extreme weather accounts for 38% 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 6.4 times the usual weather exposure. The split is drawn from 983 reported delay minutes.

Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are 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 8.3% 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 1,145 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.

The return leg runs 81.5% on time across 108 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 108 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 DTW

Put together: treat all of this as provisional. 108 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 82.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 108 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures