Carrier route record
OHTYS→DFW
PSA Airlines · Knoxville to Dallas-Fort Worth
- Flights
- 326
- Period
- September 2025 to August 2026
- Share of route
- 19%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with PSA Airlines.
PSA on TYS to DFW lands a B, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 326 flights, with a median arrival 10 minutes early.
The US average over the same twelve months is 77.3%, 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
78.6%
Arrivals under 15 minutes late, of 318 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
2.15%
National rate is 1.89%
Whole route
77.5%
Every carrier on TYS to DFW, 1,761 flights
These figures cover 326 flights between September 2025 and August 2026. The median arrival is 10 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.
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Carrier by carrier
PSA against every carrier on TYS to DFW
PSA flew 326 of the 1,761 flights on TYS to DFW, about 19% of it. Its 78.6% on time is about level with the route as a whole at 77.5%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from SkyWest at 100.0% to American at 76.4%. 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 | 92 | 87.9% | 56 min | 1.09% | A |
| PSA Airlines (this page)thin sample | 326 | 78.6% | 84 min | 2.15% | B |
| American Airlines | 1,338 | 76.4% | 103 min | 3.59% | B− |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When PSA runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 11 points, against half a point between the best and worst carrier.
- 5am–8am164 flights81.1%
- 8am–11am—
- 11am–2pm102 flights79.2%
- 2pm–5pm—
- 5pm–8pm52 flights70.0%
- 8pm–5am8 flights—
Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 81.1% of the time, against 70.0% for the evening window. That is 11 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 164 flights scheduled in it.
Across the year
PSA on TYS to DFW through the year
- Jul–Sep 202558 flights78.6%
- Oct–Dec 202537 flights64.9%
- Apr–Jun 202681 flights70.1%
- Jul–Sep 2026150 flights86.5%
Scale runs 55% to 90%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 78.6% on time across 326 flights.
PSA on TYS to DFW did not run the same all year. Its best quarter was Jul–Sep 2026 at 86.5% on time and its weakest Oct–Dec 2025 at 64.9%, a swing of 22 points on roughly 82 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, Saturday is the strongest day at 84.1% on time and Sunday the weakest at 63.0%, a spread of 21 points.
Arrival by arrival
How late PSA on TYS to DFW runs when it is late
PSA on TYS to DFW often beats the schedule: 141 of 318 completed flights, 44%, arrived 15 minutes or more early. The 68 late arrivals split 22 under half an hour, 24 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early141 flights44.3%
- Within 15 min109 flights34.3%
- 15–29 min late22 flights6.9%
- 30–59 min late24 flights7.5%
- 1–2 hours late9 flights2.8%
- 2+ hours late13 flights4.1%
Scale runs 0% to 100%.
Share of 318 completed flights by arrival against schedule.
16 of 72 late departures made up the time and arrived on time, 22% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for PSA on TYS to DFW
The latest arrival of the period was on 8 August 2026, 20 hours 33 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 August 2026 | 20 hours 33 minutes | Carrier |
| 9 October 2025 | 4 hours 21 minutes | Carrier |
| 19 June 2026 | 4 hours 13 minutes | Extreme weather |
| 12 October 2025 | 3 hours 20 minutes | Late-arriving aircraft |
| 27 May 2026 | 3 hours 9 minutes | Carrier |
Delay causes
Why PSA runs late on this route
Carrier accounts for 49% of the 5,718 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 35%Late-arriving aircraft
- 8%Extreme weather
- 8%National Airspace System
- 0%Security
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,718 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 5,718 reported delay minutes.
The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,806 of the 5,718 delay minutes reported here.
Cancellations sit at 2.15% against a national 1.89%, which is ordinary. Diversions add another 0.31%.
Connections and stage length
What a delay here costs
6.9% of arrivals land an hour or more late, close to the national 8.3%, so 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.
The return leg runs 77.3% on time across 327 flights, within about 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. 326 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. 326 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 78.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 318 completed flights over 12 months sit behind that.
Related
Where to go next
- TYS to DFW, every carrier
- PSA on DFW to TYS, the return leg
- American Airlines on TYS to DFW76.4%
- PSA Airlines network-wide record
- Dallas/Fort Worth International (DFW) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.