Carrier route record
MQBWI→MIA
Envoy Air · Baltimore to Miami
- Flights
- 121
- Period
- September 2025 to August 2026
- Share of route
- 5%
- Carriers
- 5
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on BWI to MIA lands a B+, 5 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 121 flights. The strongest carrier on the route with a full sample, American Airlines, flew 699 at 80.6% on time.
Set against the rest of the country, Envoy's BWI to MIA record is 5 points better than the US average of 77.3%. That gap is worth roughly 45 fewer late arrivals for every thousand flights.
Key figures
On time
81.8%
Arrivals under 15 minutes late, of 121 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
Whole route
75.3%
Every carrier on BWI to MIA, 2,294 flights
These figures cover 121 flights between September 2025 and August 2026. The median arrival is 15 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 BWI to MIA
Envoy flew 121 of the 2,294 flights on BWI to MIA, about 5% of it. Its 81.8% on time is 7 points better than the route as a whole, which runs 75.3%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from Envoy at 81.8% to Spirit at 60.0%. 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 80.6% of the time; Southwest Airlines manages 72.6%. Sample sizes sit next to every figure, because a two-point gap across 1,189 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Air (this page)thin sample | 121 | 81.8% | 64 min | 0.00% | B+ |
| American Airlines | 699 | 80.6% | 117 min | 2.29% | B |
| Southwest Airlines | 1,189 | 72.6% | 53 min | 2.27% | C |
| Frontier Airlinesthin sample | 269 | 71.1% | 87 min | 4.46% | C− |
| Spirit Airlinesthin sample | 16 | 60.0% | 46 min | 6.25% | D− |
American leads Southwest by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
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 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 121 flights.
There are not enough flights in each departure window to split Envoy's BWI to MIA record by time of day without the percentages moving on noise. The headline rate of 81.8% is the reliable figure here.
Across the year
Envoy on BWI to MIA through the year
- Oct–Dec 202563 flights77.8%
- Jan–Mar 20261 flights—
- Apr–Jun 202650 flights88.0%
- Jul–Sep 20267 flights—
Scale runs 70% 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 81.8% on time across 121 flights.
Split by quarter, Envoy on BWI to MIA logged 63 flights in Oct–Dec 2025, 1 flights in Jan–Mar 2026, 50 flights in Apr–Jun 2026 and 7 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 81.8% annual figure is the one to use.
Arrival by arrival
How late Envoy on BWI to MIA runs when it is late
Envoy on BWI to MIA often beats the schedule: 62 of 121 completed flights, 51%, arrived 15 minutes or more early. The 22 late arrivals split 9 under half an hour, 5 between 30 and 60 minutes, and 8 an hour or more.
- 15+ min early62 flights51.2%
- Within 15 min37 flights30.6%
- 15–29 min late9 flights7.4%
- 30–59 min late5 flights4.1%
- 1–2 hours late7 flights5.8%
- 2+ hours late1 flights0.8%
Scale runs 0% to 100%.
Share of 121 completed flights by arrival against schedule.
Only 16 of 121 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 BWI to MIA
The latest arrival of the period was on 9 December 2025, 4 hours 58 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Four of the five worst days fell in December 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 December 2025 | 4 hours 58 minutes | Late-arriving aircraft |
| 14 December 2025 | 1 hour 55 minutes | National Airspace System |
| 6 December 2025 | 1 hour 50 minutes | Carrier |
| 11 August 2026 | 1 hour 47 minutes | Extreme weather |
| 20 December 2025 | 1 hour 45 minutes | Late-arriving aircraft |
Delay causes
Why Envoy runs late on this route
Late-arriving aircraft accounts for 46% of the 1,400 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 23%National Airspace System
- 19%Carrier
- 8%Extreme weather
- 4%Security
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,400 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 1,400 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
6.6% 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 946 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 90.9% on time across 121 flights, 9 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 9 points of difference.
One caution: this is a thin sample. 121 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 BWI to MIA
Put together: treat all of this as provisional. 121 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 81.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 121 completed flights over 12 months sit behind that.
Related
Where to go next
- BWI to MIA, every carrier
- Envoy on MIA to BWI, the return leg
- American Airlines on BWI to MIA80.6%
- Southwest Airlines on BWI to MIA72.6%
- Frontier Airlines on BWI to MIA71.1%
- Envoy Air network-wide record
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- Miami International (MIA) delay statistics
- Why the first flight of the morning is statistically safest
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.