Carrier route record

MQBWI→MIA

Envoy Air · Baltimore to Miami

Flights: 114
Period: July 2025 to June 2026
Share of route: 5%
Carriers: 5

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

Envoy on BWI to MIA lands a B+, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 114 flights. The strongest carrier on the route with a full sample, American Airlines, flew 689 at 80.4% on time.

Set against the rest of the country, Envoy's BWI to MIA record is 4 points better than the US average of 77.6%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.

On time

81.6%

Arrivals under 15 minutes late, of 114 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

Whole route

74.7%

Every carrier on BWI to MIA, 2,286 flights

These figures cover 114 flights between July 2025 and June 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.

Carrier by carrier

Envoy against every carrier on BWI to MIA

Envoy flew 114 of the 2,286 flights on BWI to MIA, about 5% of it. Its 81.6% on time is 7 points better than the route as a whole, which runs 74.7%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from Envoy at 81.6% to Spirit at 61.1%. 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 80.4% of the time; Southwest Airlines manages 72.3%. Sample sizes sit next to every figure, because a two-point gap across 1,181 flights means less than a ten-point one.

On-time performance by carrier on BWI to MIA
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	114	81.6%	62 min	0.00%	B+
American Airlines	689	80.4%	101 min	2.32%	B
Southwest Airlines	1,181	72.3%	59 min	1.86%	C
Frontier Airlinesthin sample	265	69.4%	89 min	3.40%	C−
Spirit Airlinesthin sample	37	61.1%	64 min	2.70%	D

American leads Southwest by 8 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 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 114 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 81.6% 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%

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 81.6% on time across 114 flights.

Split by quarter, Envoy on BWI to MIA logged 63 flights in Oct–Dec 2025, 1 flights in Jan–Mar 2026 and 50 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 81.6% annual figure is the one to use.

Delay causes

Why Envoy runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 1,293 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
49%
National Airspace System
25%
Carrier
21%
Security
5%

49% 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 1,293 reported delay minutes here, that single category outweighs weather by 49 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 1,293 reported delay minutes.

Cancellations are rare at 0.00%, below the national 1.81% 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

6.1% 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 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. 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 90.4% on time across 114 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. 114 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. 114 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 81.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 114 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