Carrier route record

MQMIA→RDU

Envoy Air · Miami to Raleigh

Flights: 104
Period: September 2025 to August 2026
Share of route: 4%
Carriers: 5

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

Envoy on MIA to RDU lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 104 flights, with a median arrival 5 minutes early.

The US average over the same twelve months is 77.3%, so there is little to separate Envoy on MIA to RDU from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

77.7%

Arrivals under 15 minutes late, of 103 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.96%

National rate is 1.89%

Whole route

71.7%

Every carrier on MIA to RDU, 2,365 flights

These figures cover 104 flights between September 2025 and August 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.

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Carrier by carrier

Envoy against every carrier on MIA to RDU

Envoy flew 104 of the 2,365 flights on MIA to RDU, about 4% of it. Its 77.7% on time is 6 points better than the route as a whole, which runs 71.7%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from Envoy at 77.7% to Republic at 64.3%. Three 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 MIA to RDU
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	104	77.7%	56 min	0.96%	B+
Frontier Airlinesthin sample	209	74.6%	61 min	1.91%	C
American Airlines	1,662	72.1%	72 min	1.44%	C
Delta Air Linesthin sample	360	67.3%	88 min	1.94%	C
Republic Airwaysthin sample	30	64.3%	80 min	6.67%	D−

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

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 35 points, against half a point between the best and worst carrier.

5am–8am—
8am–11am32 flights90.6%
11am–2pm—
2pm–5pm38 flights86.5%
5pm–8pm—
8pm–5am34 flights55.9%

Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.

The 8pm–5am window is where this operation falls apart: 55.9% on time, against 90.6% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 38 flights scheduled in it.

Across the year

Envoy on MIA to RDU through the year

Jul–Sep 202520 flights—
Oct–Dec 202510 flights—
Jan–Mar 202636 flights85.7%
Apr–Jun 20261 flights—
Jul–Sep 202637 flights56.8%

Scale runs 50% to 90%. 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 77.7% on time across 104 flights.

Split by quarter, Envoy on MIA to RDU logged 20 flights in Jul–Sep 2025, 10 flights in Oct–Dec 2025, 36 flights in Jan–Mar 2026, 1 flights in Apr–Jun 2026 and 37 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 77.7% annual figure is the one to use.

Arrival by arrival

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

Envoy on MIA to RDU often beats the schedule: 27 of 103 completed flights, 26%, arrived 15 minutes or more early. The 23 late arrivals split 9 under half an hour, 6 between 30 and 60 minutes, and 8 an hour or more.

15+ min early27 flights26.2%
Within 15 min53 flights51.5%
15–29 min late9 flights8.7%
30–59 min late6 flights5.8%
1–2 hours late6 flights5.8%
2+ hours late2 flights1.9%

Scale runs 0% to 100%.

Share of 103 completed flights by arrival against schedule.

Only 15 of 103 completed flights left 15 minutes late or more, too few to say how often the time is made up.

The worst days

Worst days for Envoy on MIA to RDU

The latest arrival of the period was on 6 July 2026, 2 hours 46 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. Four of the five worst days fell in July 2026.

The latest arrivals of Envoy on MIA to RDU in the period
Date	Arrived late by	Largest filed cause
6 July 2026	2 hours 46 minutes	National Airspace System
17 July 2026	2 hours 3 minutes	Late-arriving aircraft
28 July 2026	1 hour 28 minutes	National Airspace System
20 December 2025	1 hour 24 minutes	Late-arriving aircraft
26 July 2026	1 hour 23 minutes	Late-arriving aircraft

Delay causes

Why Envoy runs late on this route

National Airspace System accounts for 43% of the 1,276 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
43%
Late-arriving aircraft
37%
Carrier
19%
Extreme weather
1%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,276 reported delay minutes here, that single category outweighs weather by 28 to one. The split is drawn from 1,276 reported delay minutes.

43% 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 545 minutes out of 1,276, against a national NAS share of 21%.

Cancellations sit at 0.96% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

7.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The 700 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 is a different operation and performs like one: it runs 74.3% on time across 102 flights, 3 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 3 points of difference.

One caution: this is a thin sample. 104 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 RDU

Put together: treat all of this as provisional. 104 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 77.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 103 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