Carrier route record

MQSDF→DFW

Envoy Air · Louisville to Dallas-Fort Worth

Flights: 308
Period: July 2025 to June 2026
Share of route: 15%
Carriers: 5

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

Envoy on SDF to DFW lands a B, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 308 flights. The strongest carrier on the route with a full sample, PSA Airlines, flew 463 at 78.3% on time.

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

On time

78.0%

Arrivals under 15 minutes late, of 296 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

2.60%

National rate is 1.81%

Whole route

74.9%

Every carrier on SDF to DFW, 2,015 flights

These figures cover 308 flights between July 2025 and June 2026. Beyond the headline rate, 8.1% 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 SDF to DFW

Envoy flew 308 of the 2,015 flights on SDF to DFW, about 15% of it. Its 78.0% on time is 3 points better than the route as a whole, which runs 74.9%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from PSA at 78.3% to American at 72.7%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The two carriers here are closely matched: 6 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on SDF to DFW
Airline	Flights	On time	Avg delay	Cancelled	Grade
PSA Airlines	463	78.3%	164 min	4.97%	B−
Envoy Air (this page)thin sample	308	78.0%	68 min	2.60%	B
SkyWest Airlinesthin sample	56	77.4%	117 min	3.57%	B−
Spirit Airlinesthin sample	12	75.0%	40 min	0.00%	B+
American Airlines	1,176	72.7%	113 min	3.23%	C−

PSA Airlines cancels 5.0% 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 matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against 6 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am27 flights—
8am–11am9 flights—
11am–2pm71 flights82.9%
2pm–5pm128 flights77.2%
5pm–8pm73 flights66.7%
8pm–5am—

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 11am–2pm slot at 82.9% on time, ahead of 5pm–8pm at 66.7%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 2pm–5pm window is the busiest, with 128 flights scheduled in it.

Across the year

Envoy on SDF to DFW through the year

Jul–Sep 2025148 flights81.1%
Oct–Dec 202531 flights76.7%
Jan–Mar 20268 flights—
Apr–Jun 2026121 flights73.9%

Scale runs 65% to 85%. 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 78.0% on time across 308 flights.

Quarter by quarter Envoy on SDF to DFW held fairly steady: 81.1% in Jul–Sep 2025, 76.7% in Oct–Dec 2025 and 73.9% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Across the week, Thursday is the strongest day at 85.7% on time and Sunday the weakest at 64.1%. 22 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 4,442 reported delay minutes.

National Airspace System
41%
Late-arriving aircraft
41%
Carrier
16%
Extreme weather
3%

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 4,442 reported delay minutes here, that single category outweighs weather by 14 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 4,442 reported delay minutes.

41% 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 1,812 minutes out of 4,442, against a national NAS share of 21%.

Cancellations run at 2.60%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and stage length

What a delay here costs

8.1% 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 a little over an hour, which a normal layover absorbs.

The 733 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 84.7% on time across 309 flights, 7 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 7 points of difference.

One caution: this is a thin sample. 308 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 SDF to DFW

Put together: treat all of this as provisional. 308 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 78.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 296 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