Carrier route record

MQORD→JAX

Envoy Air · Chicago to Jacksonville

Flights: 237
Period: July 2025 to June 2026
Share of route: 11%
Carriers: 6

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

Envoy on ORD to JAX sits in the middle of the pack with a B+. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 237 flights. The strongest carrier on the route with a full sample, United Airlines, flew 893 at 73.6% on time.

The US average over the same twelve months is 77.6%, so there is little to separate Envoy on ORD to JAX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

75.8%

Arrivals under 15 minutes late, of 236 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.42%

National rate is 1.81%

Whole route

72.7%

Every carrier on ORD to JAX, 2,062 flights

These figures cover 237 flights between July 2025 and June 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

Envoy against every carrier on ORD to JAX

Envoy flew 237 of the 2,062 flights on ORD to JAX, about 11% of it. Its 75.8% on time is 3 points better than the route as a whole, which runs 72.7%. Ranked by on-time rate it is number four of six carriers on the route, where the range runs from PSA at 100.0% to American at 62.3%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. United Airlines arrives on time 73.6% of the time; American Airlines manages 62.3%. Sample sizes sit next to every figure, because a two-point gap across 464 flights means less than a ten-point one.

On-time performance by carrier on ORD to JAX
Airline	Flights	On time	Avg delay	Cancelled	Grade
PSA Airlinesthin sample	1	100.0%	—	0.00%	A+
Republic Airwaysthin sample	317	80.3%	58 min	2.21%	B
SkyWest Airlinesthin sample	150	77.9%	61 min	1.33%	B
Envoy Air (this page)thin sample	237	75.8%	56 min	0.42%	B+
United Airlines	893	73.6%	82 min	0.45%	C+
American Airlines	464	62.3%	102 min	2.59%	D

United leads American by 11 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 14 points, against 11 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am30 flights—
8am–11am95 flights80.0%
11am–2pm24 flights—
2pm–5pm35 flights77.1%
5pm–8pm53 flights66.0%
8pm–5am—

Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 80.0% of the time, against 66.0% for the evening window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 95 flights scheduled in it.

Across the year

Envoy on ORD to JAX through the year

Jul–Sep 202511 flights—
Oct–Dec 202581 flights77.5%
Jan–Mar 2026100 flights66.0%
Apr–Jun 202645 flights88.9%

Scale runs 60% 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 75.8% on time across 237 flights.

Envoy on ORD to JAX did not run the same all year. Its best quarter was Apr–Jun 2026 at 88.9% on time and its weakest Jan–Mar 2026 at 66.0%, a swing of 23 points on roughly 79 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, Thursday is the strongest day at 84.2% on time and Wednesday the weakest at 66.7%. 18 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 3,181 reported delay minutes.

National Airspace System
34%
Late-arriving aircraft
32%
Carrier
17%
Extreme weather
17%

Extreme weather accounts for 17% 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 2.7 times the usual weather exposure. The split is drawn from 3,181 reported delay minutes.

34% 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 1,076 minutes out of 3,181, against a national NAS share of 21%.

Cancellations are rare at 0.42%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

8.5% 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 864 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 runs 75.2% on time across 236 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 237 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 JAX

Put together: treat all of this as provisional. 237 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 75.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 236 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