Carrier route record
OHDFW→SDF
PSA Airlines · Dallas-Fort Worth to Louisville
- Flights
- 463
- Period
- July 2025 to June 2026
- Share of route
- 23%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with PSA Airlines.
PSA on DFW to SDF lands a B−, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 463 flights, with a median arrival 9 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate PSA on DFW to SDF from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
81.5%
Arrivals under 15 minutes late, of 438 completed flights
Avg delay
93 min
Across delayed arrivals only, not all flights
Cancelled
5.40%
National rate is 1.81%
Whole route
71.2%
Every carrier on DFW to SDF, 2,014 flights
These figures cover 463 flights between July 2025 and June 2026. Beyond the headline rate, 9.4% 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 DFW to SDF
PSA flew 463 of the 2,014 flights on DFW to SDF, about 23% of it. Its 81.5% on time is 10 points better than the route as a whole, which runs 71.2%. Ranked by on-time rate it is number four of five carriers on the route, where the range runs from SkyWest at 85.2% to American at 62.9%. Three 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 | 56 | 85.2% | 45 min | 3.57% | A− |
| Envoy Airthin sample | 309 | 84.7% | 54 min | 2.59% | B |
| Spirit Airlinesthin sample | 12 | 83.3% | 77 min | 0.00% | B+ |
| PSA Airlines (this page) | 463 | 81.5% | 93 min | 5.40% | B− |
| American Airlines | 1,174 | 62.9% | 83 min | 3.07% | D− |
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 24 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am289 flights89.1%
- 11am–2pm35 flights65.6%
- 2pm–5pm139 flights69.7%
- 5pm–8pm—
- 8pm–5am—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 65.6% on time against 89.1% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8am–11am window is the busiest, with 289 flights scheduled in it.
Across the year
PSA on DFW to SDF through the year
July is the worst month at 69.7% on time, 21 points below February, the best at 90.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. July was the busiest month here, with 68 flights.
Across the week, Saturday is the strongest day at 88.1% on time and Tuesday the weakest at 75.0%. 13 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. Late-arriving aircraft accounts for 49% of the 7,523 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.
- 49%Late-arriving aircraft
- 32%Carrier
- 11%National Airspace System
- 8%Extreme weather
49% 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 7,523 reported delay minutes here, that single category outweighs weather by 6 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 7,523 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.1% on time here.
Cancellations run at 5.40%, against 1.81% nationally. That is about one flight in twenty 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
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 78.3% on time across 463 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. 463 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 DFW to SDF
Put together: the delay figures matter less here than the 5.40% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 438 completed flights over 12 months sit behind that.
Related
Where to go next
- DFW to SDF, every carrier
- PSA on SDF to DFW, the return leg
- Envoy Air on DFW to SDF84.7%
- American Airlines on DFW to SDF62.9%
- PSA Airlines network-wide record
- Dallas/Fort Worth International (DFW) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.