Flights Denver → Louisville
DEN → SDF
Route overview
The flight route from Denver to Louisville has an on-time performance rate of 81%, with flights typically experiencing a mean delay of 10.8 minutes. Over the past year, this route has seen 269 total flights departing from Denver International Airport, which opened in 1989, heading towards a destination airport that handles approximately 3,346,545 passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Denver (DEN) → Louisville (SDF) route is operated by United Airlines, Southwest Airlines. Across 362 flights monitored in recent months, 78% arrived on time (within 15 min of schedule), with an average delay of 12 minutes. The cancellation rate is 0.55%. FlightGuard's average computed risk is 13.2/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Louisville the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Denver the average ATFM delay is 2.0 minutes.
Heading to Louisville: what to expect in this direction
Flying from Denver (DEN) to Louisville (SDF) heads east for about 1,644 km, a flight time of roughly 2h 29m.
Departures from Denver on this leg cluster in the morning window: about 51% of DEN-SDF flights take off then.
Air-traffic congestion: departing Denver the average ATFM delay is 2.0 min (atfm); arriving into Louisville it is 2.0 min (atfm).
Across 362 tracked DEN-SDF flights, 78% left on time with an average delay of 12 min and a 0.6% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
| Southwest Airlines (WN) | 73% | 6 min | 3.1% |
Airlines operating DEN-SDF
Airports
Frequently asked questions about DEN-SDF
On the Denver (DEN) -> Louisville (SDF) route, on-time performance is 78% with an average delay of 12 minutes, based on 362 tracked flights.
The cancellation rate on Denver-Louisville is 0.55% across 362 monitored flights.
The route is operated by 2 airlines: United Airlines, Southwest Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Louisville, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
