Carrier route record
MQATL→MIA
Envoy Air · Atlanta to Miami
- Flights
- 227
- Period
- July 2025 to June 2026
- Share of route
- 4%
- Carriers
- 6
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on ATL to MIA sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 227 flights. The strongest carrier on the route with a full sample, American Airlines, flew 1,527 at 75.2% on time.
American Airlines is the most reliable of the three carriers covered here at 75.2% on time across 1,527 flights.
Key figures
On time
74.6%
Arrivals under 15 minutes late, of 224 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
1.32%
National rate is 1.81%
Whole route
71.0%
Every carrier on ATL to MIA, 6,229 flights
These figures cover 227 flights between July 2025 and June 2026. The median arrival is 3 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 ATL to MIA
Envoy flew 227 of the 6,229 flights on ATL to MIA, about 4% of it. Its 74.6% on time is 4 points better than the route as a whole, which runs 71.0%. Ranked by on-time rate it is number two of six carriers on the route, where the range runs from American at 75.2% to Republic at 63.6%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. American Airlines arrives on time 75.2% of the time; Frontier Airlines manages 65.3%. Sample sizes sit next to every figure, because a two-point gap across 864 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlines | 1,527 | 75.2% | 90 min | 0.85% | B+ |
| Envoy Air (this page)thin sample | 227 | 74.6% | 76 min | 1.32% | C |
| Spirit Airlinesthin sample | 269 | 73.3% | 99 min | 4.09% | C− |
| Delta Air Lines | 3,298 | 70.3% | 56 min | 1.43% | C |
| Frontier Airlines | 864 | 65.3% | 91 min | 1.62% | C |
| Republic Airwaysthin sample | 44 | 63.6% | 68 min | 0.00% | D+ |
American leads Frontier by 10 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
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 34 points, against 10 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am42 flights95.2%
- 8am–11am43 flights74.4%
- 11am–2pm21 flights—
- 2pm–5pm66 flights61.5%
- 5pm–8pm55 flights66.7%
- 8pm–5am—
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 95.2% of the time, against 61.5% for the afternoon window. That is 34 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 66 flights scheduled in it.
Across the year
Envoy on ATL to MIA through the year
- Jul–Sep 202575 flights72.0%
- Oct–Dec 2025101 flights79.8%
- Jan–Mar 202645 flights70.5%
- Apr–Jun 20266 flights—
Scale runs 60% to 85%. 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 74.6% on time across 227 flights.
Quarter by quarter Envoy on ATL to MIA held fairly steady: 72.0% in Jul–Sep 2025, 79.8% in Oct–Dec 2025 and 70.5% in Jan–Mar 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
Across the week, Wednesday is the strongest day at 87.1% on time and Thursday the weakest at 60.0%. 27 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 48% of the 4,324 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.
- 48%Late-arriving aircraft
- 34%Carrier
- 11%National Airspace System
- 6%Extreme weather
- 1%Security
48% 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 4,324 reported delay minutes here, that single category outweighs weather by 8 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 4,324 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 95.2% on time here.
Cancellations sit at 1.32% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
7.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 594 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 78.3% on time across 225 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. 227 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 ATL to MIA
Put together: treat all of this as provisional. 227 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 74.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 224 completed flights over 12 months sit behind that.
Related
Where to go next
- ATL to MIA, every carrier
- Envoy on MIA to ATL, the return leg
- American Airlines on ATL to MIA75.2%
- Spirit Airlines on ATL to MIA73.3%
- Delta Air Lines on ATL to MIA70.3%
- Frontier Airlines on ATL to MIA65.3%
- Envoy Air network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Miami International (MIA) 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.