Carrier route record

MQORD→EYW

Envoy Air · Chicago to Key West

Flights: 407
Period: July 2025 to June 2026
Share of route: 57%
Carriers: 3

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

Envoy on ORD to EYW lands a B, 4 points better than the national rate of 77.6%. About one flight in six 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 407 flights, with a median arrival 17 minutes early.

Set against the rest of the country, Envoy's ORD to EYW record is 4 points better than the US average of 77.6%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.

On time

82.0%

Arrivals under 15 minutes late, of 401 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

1.23%

National rate is 1.81%

Whole route

80.5%

Every carrier on ORD to EYW, 717 flights

These figures cover 407 flights between July 2025 and June 2026. The median arrival is 17 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 ORD to EYW

Envoy flew 407 of the 717 flights on ORD to EYW, most of the route. Its 82.0% on time is 2 points better than the route as a whole, which runs 80.5%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Envoy at 82.0% to United at 77.2%. Two 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 ORD to EYW
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)	407	82.0%	63 min	1.23%	B
Republic Airwaysthin sample	172	79.6%	55 min	1.74%	B
United Airlinesthin sample	138	77.2%	75 min	0.72%	B+

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 407 flights.

5am–8am—
8am–11am204 flights84.2%
11am–2pm105 flights76.5%
2pm–5pm98 flights83.5%
5pm–8pm—
8pm–5am—

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

The weak window here is the middle of the day, not the evening: 11am–2pm runs 76.5% on time against 84.2% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8am–11am window is the busiest, with 204 flights scheduled in it.

Across the year

Envoy on ORD to EYW through the year

Jul–Sep 20255 flights—
Oct–Dec 202583 flights72.5%
Jan–Mar 2026178 flights83.0%
Apr–Jun 2026141 flights85.7%

Scale runs 65% 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 82.0% on time across 407 flights.

Envoy on ORD to EYW did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.7% on time and its weakest Oct–Dec 2025 at 72.5%, a swing of 13 points on roughly 136 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Tuesday is the strongest day at 91.5% on time and Wednesday the weakest at 76.4%. 15 points is a smaller lever than departure hour, but it is free.

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 4,526 reported delay minutes.

Late-arriving aircraft
41%
National Airspace System
35%
Extreme weather
15%
Carrier
9%

Extreme weather accounts for 15% 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 2.4 times the usual weather exposure. The split is drawn from 4,526 reported delay minutes.

41% 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 4,526 reported delay minutes here, that single category outweighs weather by 3 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.

Cancellations sit at 1.23% against a national 1.81%, which is ordinary. Diversions add another 0.25%.

Connections and stage length

What a delay here costs

7.0% 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 1,251 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 67.0% on time across 407 flights, 15 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 15 points of difference.

One caution: this is a thin sample. 407 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 ORD to EYW

Put together: treat all of this as provisional. 407 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 82.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 401 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