Carrier route record
OHTYS→DFW
PSA Airlines · Knoxville to Dallas-Fort Worth
- Flights
- 279
- Period
- July 2025 to June 2026
- Share of route
- 16%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with PSA Airlines.
PSA on TYS to DFW sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 279 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate PSA on TYS to DFW from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.1%
Arrivals under 15 minutes late, of 270 completed flights
Avg delay
89 min
Across delayed arrivals only, not all flights
Cancelled
2.51%
National rate is 1.81%
Whole route
76.5%
Every carrier on TYS to DFW, 1,721 flights
These figures cover 279 flights between July 2025 and June 2026. Beyond the headline rate, 8.9% 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
PSA against every carrier on TYS to DFW
PSA flew 279 of the 1,721 flights on TYS to DFW, about 16% of it. Its 74.1% on time is 2 points worse than the route as a whole, which runs 76.5%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from SkyWest at 100.0% to PSA at 74.1%. 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlinesthin sample | 5 | 100.0% | — | 40.00% | A− |
| Envoy Airthin sample | 88 | 89.7% | 57 min | 1.14% | A |
| American Airlines | 1,349 | 76.0% | 101 min | 4.15% | B− |
| PSA Airlines (this page)thin sample | 279 | 74.1% | 89 min | 2.51% | C |
Departure window
When PSA 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 279 flights.
- 5am–8am164 flights74.7%
- 8am–11am5 flights—
- 11am–2pm77 flights74.7%
- 2pm–5pm—
- 5pm–8pm33 flights75.0%
- 8pm–5am—
Scale runs 65% to 80%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 75.0% on time. The full set of windows spans half a point.
Across the year
PSA on TYS to DFW through the year
- Jul–Sep 2025161 flights78.2%
- Oct–Dec 202537 flights64.9%
- Apr–Jun 202681 flights70.1%
Scale runs 55% 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 74.1% on time across 279 flights.
PSA on TYS to DFW did not run the same all year. Its best quarter was Jul–Sep 2025 at 78.2% on time and its weakest Oct–Dec 2025 at 64.9%, a swing of 13 points on roughly 93 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 84.6% on time and Sunday the weakest at 59.5%. 25 points is a smaller lever than departure hour, but it is free.
Delay causes
Why PSA runs late on this route
One category carries most of the weight here. Carrier accounts for 69% of the 6,212 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.
- 69%Carrier
- 16%Late-arriving aircraft
- 8%Extreme weather
- 7%National Airspace System
- 0%Security
The largest share of delay minutes, 69%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,256 of the 6,212 delay minutes reported here. The split is drawn from 6,212 reported delay minutes.
Cancellations run at 2.51%, 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
8.9% 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 an hour and a half, which a normal layover absorbs.
The 772 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 73.7% on time across 279 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. 279 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 PSA on TYS to DFW
Put together: treat all of this as provisional. 279 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 74.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 270 completed flights over 12 months sit behind that.
Related
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.