$70 Cheap Flights from Denver (DEN) to Louisville (SDF)

View $70 flight on Tue, Sep 23, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)

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Cheap Flights from Denver to Louisville (DEN-SDF)

Prices were available within the past 7 days and start at $70 for one-way flights and $139 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Aug 30 - Tue, Sep 2
DEN
Denver
SDF
Louisville
$139 Roundtrip, found 7 hours ago
$139
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Aug 30 from Denver to Louisville, returning Tue, Sep 2, priced at $139 found 7 hours ago
Southwest Airlines
Tue, Oct 7 - Wed, Oct 15
DEN
Denver
SDF
Louisville
$149 Roundtrip, found 8 hours ago
$149
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Tue, Oct 7 from Denver to Louisville, returning Wed, Oct 15, priced at $149 found 8 hours ago
United
Tue, Oct 7 - Wed, Oct 15
DEN
Denver
SDF
Louisville
$150 Roundtrip, found 8 hours ago
$150
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Oct 7 from Denver to Louisville, returning Wed, Oct 15, priced at $150 found 8 hours ago
American Airlines
Tue, Sep 9 - Wed, Sep 10
DEN
Denver
SDF
Louisville
$151 Roundtrip, found 9 hours ago
$151
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Sep 9 from Denver to Louisville, returning Wed, Sep 10, priced at $151 found 9 hours ago
Southwest Airlines
Mon, Sep 22 - Wed, Sep 24
DEN
Denver
SDF
Louisville
$156 Roundtrip, found 11 hours ago
$156
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Mon, Sep 22 from Denver to Louisville, returning Wed, Sep 24, priced at $156 found 11 hours ago
American Airlines
Tue, Oct 7 - Wed, Oct 15
DEN
Denver
SDF
Louisville
$159 Roundtrip, found 8 hours ago
$159
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Oct 7 from Denver to Louisville, returning Wed, Oct 15, priced at $159 found 8 hours ago
Southwest Airlines
Tue, Oct 7 - Tue, Oct 14
DEN
Denver
SDF
Louisville
$163 Roundtrip, found 1 day ago
$163
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Oct 7 from Denver to Louisville, returning Tue, Oct 14, priced at $163 found 1 day ago
Southwest Airlines
Thu, Sep 25 - Sat, Sep 27
DEN
Denver
SDF
Louisville
$166 Roundtrip, found 14 hours ago
$166
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Thu, Sep 25 from Denver to Louisville, returning Sat, Sep 27, priced at $166 found 14 hours ago
United
Tue, Sep 2 - Fri, Sep 5
DEN
Denver
SDF
Louisville
$166 Roundtrip, found 5 hours ago
$166
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Sep 2 from Denver to Louisville, returning Fri, Sep 5, priced at $166 found 5 hours ago
Delta
Mon, Oct 20 - Wed, Oct 22
DEN
Denver
SDF
Louisville
$179 Roundtrip, found 21 hours ago
$179
Roundtrip
found 21 hours ago
Select Delta flight, departing Mon, Oct 20 from Denver to Louisville, returning Wed, Oct 22, priced at $179 found 21 hours ago

Find the cheapest month to fly from Denver (DEN) to Louisville (SDF)

November is typically the cheapest month to fly

From $133 - $502 per traveler.

Graph displaying average flight prices per month

Alternative airports near Louisville

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Louisville Intl. SDF. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $287
SDF
Louisville Intl.
CheapestClosest
Average driving time to city center9 min
Flights from $287
Flights from Denver (DEN) to Louisville (SDF)
Origin airport
Denver Intl.
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$139
Distance
1020 mi
Average flight time
6 hours 8 mins

Denver to Louisville Flights

The cheapest times to fly from Denver to Louisville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Louisville are during the month of August. You can find some of the cheapest flights from Denver to Louisville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Louisville

Sunday is one of the best days to book for cheap flights from Denver to Louisville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Louisville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Louisville in 2025. You can also book with separate airlines for your outbound and return journeys, from $70 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Louisville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Louisville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF) cost?
Get a cheap one-way flight from $70 or cheap return flight from $139 from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
August is the cheapest month to fly from DEN to SDF. Traveling during an off-peak travel window is often the key to landing a great deal.
Which airlines fly direct from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
Fly nonstop from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF) on a United Airlines flight.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
While prices can change depending on when you travel, Southwest Airlines and United Airlines are often frequently picked for flights between Denver Intl. Airport (DEN) and Louisville Intl. Airport (SDF). You can also compare carriers on Expedia and use the "Sort by" filter to find the lowest fare for your DEN to SDF flight.
How many flights per day from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
When departing from Denver Intl. Airport (DEN), you'll have a choice from an average of 2 daily nonstop flights to Louisville Intl. Airport (SDF).
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
The 5 PM departures from DEN to SDF are the top choice for many travelers. They can also be more expensive. If you're hoping to save money, choose a less crowded time to fly.
What day of the week has the most flights from DEN to SDF?
Monday offers the most flights from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF). Consider jetting off on this day and you'll have the best chance of finding a departure that works with your plans.
What is the earliest flight from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
The earliest flight jetting off from Denver Intl. Airport (DEN) is at around 9:45AM UTC-7. Catch this flight and you'll arrive at Louisville Intl. Airport (SDF) at approximately 2:26PM UTC-5. The total flight duration is 2h 41m.
How long does it take to fly from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
It takes roughly 2 hours and 33 minutes to cover the 1,000 mi from DEN to SDF.
What is the best time to fly from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
To avoid possible delays on the Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Louisville from Denver Intl. Airport (DEN)?
Louisville Intl. Airport (SDF) is the only airport in Louisville with direct flights from Denver Intl. Airport (DEN). Consider the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF) last-minute?
Booking your ticket from DEN to SDF right before your getaway is generally more expensive. But if you're flexible with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a DEN to SDF flight and hotel package?
Compared with arranging flights and hotels separately, booking a DEN to SDF flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the stress out of travel planning. Just secure your flights and choose from our wide range of hotels, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Louisville Intl. Airport (SDF)?
Usually, it's possible to reschedule or cancel your DEN to SDF flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.