Direct (nonstop) flights from Denver to Louisville
2 airlines fly nonstop from Denver International (DEN) to Louisville International Airport (SDF). It's 1,023 miles (1,647 km), about 2h 39m in the air. Operated by United Airlines, Southwest Airlines.
United Airlines
Southwest Airlines
Route data last updated: May 29, 2026
Airlines with non-stop flights
UA
United Airlines
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Denver to Louisville with one stop · direct emits 173 kg CO₂ per passenger
Looking for the return flight?
SDF → DEN: Flights from Louisville to DenverOther direct flights from Denver
Direct flights from Louisville (SDF)
Frequently Asked Questions
How long is the direct flight from Denver to Louisville?
A nonstop flight from Denver (DEN) to Louisville (SDF) takes approximately 2 hours and 39 minutes. The distance is 1,023 miles (1,647 km).
Which airlines fly nonstop from Denver to Louisville?
2 airlines: United Airlines, Southwest Airlines.
Is there a nonstop flight from Denver to Louisville?
Yes. 2 airlines: United Airlines, Southwest Airlines.
How far is Denver from Louisville?
The flight distance from Denver to Louisville is 1,023 miles (1,647 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from Denver to Louisville?
At 2h 39m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Denver to Louisville?
Roughly 173 kg CO2 per passenger one-way. That's about the same as driving 865 km.
Is the return flight from Louisville to Denver also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Denver to Louisville?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Denver International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.