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$129+ Cheap flights from Denver to Louisville (DEN - SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SDF
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Louisville Intl are usually found in August or March, booked 34 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

Cheap flight deals from Denver to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$247
(American Airlines)

One-way from

$129
(American Airlines)

Popular in

April

Cheapest in

August

Average price

$507

Good round-trip deal

$377 or less

Good one-way deal

$177 or less
From Denver Intl to Louisville Intl
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One-way flight from Denver Intl to Louisville Intl
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Highest demand for flights based on searches. 7% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Denver Intl to Louisville Intl.
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Price to beat on a one-way flight from Denver Intl to Louisville Intl.
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Find flight deals from Denver to Louisville

Cheapest flights from Denver to Louisville
Explore the most affordable flight options available from Denver to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:20 amDEN - SDF
1 stop11h 43mAmerican Airlines
Wed 10/156:45 amSDF - DEN
1 stop8h 38mAmerican Airlines
Deal found 7/27$247
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:10 pmDEN - SDF
Nonstop2h 25mSouthwest
Wed 10/156:00 amSDF - DEN
Nonstop2h 55mSouthwest
Deal found 7/28$277
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:45 pmDEN - SDF
Nonstop2h 45mUnited Airlines
Wed 9/103:30 pmSDF - DEN
Nonstop2h 59mUnited Airlines
Deal found 7/28$291
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/612:50 amDEN - SDF
1 stop7h 06mDelta
Wed 10/1510:30 amSDF - DEN
1 stop5h 27mDelta
Deal found 7/28$297
This Mytrip deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:43 pmDEN - SDF
2 stops26h 45mMultiple Airlines
Sun 9/148:30 amSDF - DEN
2 stops25h 20mMultiple Airlines
Deal found 7/27$409

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Denver to Louisville that are best for you.

Fly from

Denver

Fly to

Louisville

Route

Depart

Return

Price

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 10/7

9:20 am-11:03 pm

1 stop11h 43m

Louisville Intl

Wed 10/15

6:45 am-1:23 pm

1 stop8h 38m

$247

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 8/26

9:55 am-2:34 pm

Nonstop2h 39m

Louisville Intl

Tue 9/2

3:30 pm-4:29 pm

Nonstop2h 59m

$277

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Mon 10/6

12:50 am-9:56 am

1 stop7h 06m

Louisville Intl

Wed 10/15

10:30 am-1:57 pm

1 stop5h 27m

$297

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 10/7

8:05 am-5:30 pm

2 stops7h 25m

Louisville Intl

Wed 10/15

6:55 pm-10:20 pm

1 stop5h 25m

$302

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 9/16

7:16 am-5:38 pm

1 stop8h 22m

$129

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 10/21

5:45 pm-10:30 pm

Nonstop2h 45m

$139

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Sat 8/30

12:19 am-11:52 am

1 stop9h 33m

$146

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Sat 10/11

5:45 am-2:20 pm

1 stop6h 35m

$149

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Sun 9/14

10:05 am-5:33 pm

1 stop5h 28m

$150

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Thu 8/28

7:05 pm-11:40 pm

Nonstop2h 35m

$153

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 11 results
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Best time to book a flight from Denver to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Louisville

How far ahead should I book a flight from Denver to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Louisville. Price data was last updated on July 25, 2025.

The price you pay for your flight from Denver to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Denver to Louisville?

Currently, January is the cheapest month in which you can book a flight from Denver to Louisville (average of $299). Flying from Denver to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to SDF?

Find hourly flight availability from Denver to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s optimal to fly from Denver to Louisville in the evening. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Denver to Louisville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,977 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,899 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Allegiant Air
7.2
Good
703 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Denver to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Denver to Louisville?

    Louisville Intl is the airport most travelers will use when flying to Louisville from Denver Intl. Booking flights from Denver Intl (DEN) to Louisville Intl (SDF) should be relatively easy as there are 2 daily flights to Louisville from 4 different airlines. 2h 25m is how long a flight from Denver to Louisville Intl will take if you book a nonstop flight.

  • How popular is this Denver to Louisville flight route?

    The Denver Intl to Louisville Intl flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Denver to Louisville round-trip?

    Cheapflights users have booked flights from Denver to Louisville round-trip from $247. Other airlines that can offer you cheap pricing are United Airlines, from $277, and Delta, from $297. American Airlines is currently priced 46% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Denver to Louisville one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $129. Users have also found prices from $139 and $149 on United Airlines and Delta, respectively.

  • What are the most reliable airlines from Denver to Louisville?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Louisville on time: United Airlines (56%), Southwest (50%), Air Canada (43%).

  • What are the cheapest flights from Denver to Louisville?

    The cheapest flight price from Denver to Louisville is $128. On average you can expect to pay $417. The most popular route, (Denver Intl - Louisville Intl), can usually be booked for $277.

  • Can I find deals for flights from Denver to Louisville that include hotel bookings?

    Yes. In addition to deals on Denver to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Louisville.

  • Can I find deals for business class flights from Denver to Louisville?

    Yes. Cheapflights offers flight deals from Denver to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Denver to Louisville (average of $299). Flying from Denver to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top 4 airlines flying from Denver to Louisville

Discover the top 4 airlines that operate flights from Denver to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$182Average$356FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$393FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$300Average$428FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$307Average$483FlexibilityNo cancel feeOn-time69%

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