Carrier route record

MQORD→TYS

Envoy Air · Chicago to Knoxville

Flights: 176
Period: July 2025 to June 2026
Share of route: 8%
Carriers: 5

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

Envoy on ORD to TYS lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 176 flights. The strongest carrier on the route with a full sample, SkyWest Airlines, flew 815 at 71.6% on time.

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

On time

79.1%

Arrivals under 15 minutes late, of 172 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

2.27%

National rate is 1.81%

Whole route

66.7%

Every carrier on ORD to TYS, 2,219 flights

These figures cover 176 flights between July 2025 and June 2026. The median arrival is 5 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 TYS

Envoy flew 176 of the 2,219 flights on ORD to TYS, about 8% of it. Its 79.1% on time is 12 points better than the route as a whole, which runs 66.7%. Ranked by on-time rate it is first of five carriers on the route, where the range runs from Envoy at 79.1% to PSA at 60.2%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. SkyWest Airlines arrives on time 71.6% of the time; PSA Airlines manages 60.2%. Sample sizes sit next to every figure, because a two-point gap across 834 flights means less than a ten-point one.

On-time performance by carrier on ORD to TYS
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	176	79.1%	46 min	2.27%	B
Republic Airwaysthin sample	78	75.6%	59 min	0.00%	B+
SkyWest Airlines	815	71.6%	75 min	1.84%	C
United Airlinesthin sample	316	61.0%	82 min	2.53%	D
PSA Airlines	834	60.2%	143 min	6.71%	D−

PSA Airlines cancels 6.7% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after 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 176 flights.

5am–8am—
8am–11am14 flights—
11am–2pm94 flights80.9%
2pm–5pm41 flights82.1%
5pm–8pm—
8pm–5am27 flights—

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

The 2pm–5pm window is the strongest at 82.1% on time. The full set of windows spans about a point.

Across the year

Envoy on ORD to TYS through the year

Jul–Sep 202552 flights78.8%
Oct–Dec 202542 flights83.3%
Apr–Jun 202682 flights76.9%

Scale runs 70% 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 79.1% on time across 176 flights.

Quarter by quarter Envoy on ORD to TYS held fairly steady: 78.8% in Jul–Sep 2025, 83.3% in Oct–Dec 2025 and 76.9% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

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 1,670 reported delay minutes.

National Airspace System
39%
Late-arriving aircraft
32%
Carrier
22%
Extreme weather
7%

39% 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 650 minutes out of 1,670, against a national NAS share of 21%. The split is drawn from 1,670 reported delay minutes.

Cancellations sit at 2.27% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

5.8% 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 roughly 45 minutes, which a normal layover absorbs.

At 475 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 2pm–5pm window matters as much as it does.

The return leg is a different operation and performs like one: it runs 75.9% on time across 175 flights, 3 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 3 points of difference.

One caution: this is a thin sample. 176 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 TYS

Put together: treat all of this as provisional. 176 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 79.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 172 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