DFW to SDF flight delays
Dallas/Fort Worth, TX (DFW) Louisville, KY (SDF) · 733 miles
2,014 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
71.2%
Arrived on time
Within 15 minutes of schedule
3.53%
Cancelled
Share of scheduled flights
81 min
When late, late by
Average across delayed arrivals
24 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Envoy Air arrived on time 21.9 points more often than American Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
Cancellation, not delay, is the risk worth pricing here: 3.53% of scheduled flights never operated. A late flight still gets you there. A cancelled one leaves you rebooking, and on a route with few daily departures that can mean losing a day.
Flights from Dallas/Fort Worth to Louisville run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Envoy Air arrived on time most often on DFW to SDF. American Airlines was late most often. Flights ran closest to schedule in May and worst in December.
Every airline on DFW to SDF
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| American Airlines | 1,174 | 62.85% | 3.07% | 83 min | F |
| PSA Airlines | 463 | 81.51% | 5.4% | 93 min | D |
| Envoy Air | 309 | 84.72% | 2.59% | 54 min | B |
| SkyWest Airlines | 56 | 85.19% | 3.57% | 45 min | — |
| Spirit Airlines | 12 | 83.33% | 0% | 77 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
Other routes from Dallas/Fort Worth
Common questions
Are flights from Dallas/Fort Worth to Louisville usually delayed?
71.2% of flights on the DFW to SDF route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
Which airline is most on time from Dallas/Fort Worth to Louisville?
Envoy Air, at 84.72% on time across 309 flights. The least punctual on the route was American Airlines at 62.85%.
How often are DFW to SDF flights cancelled?
3.53% of scheduled flights did not operate — about 35 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
What is the best month to fly Dallas/Fort Worth to Louisville?
May, when 77.1% of flights arrived on time. The worst was December at 65.4%.
When DFW to SDF flights are late, how late are they?
About 81 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on DFW to SDF during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →