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$100+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SDF
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Louisville Intl are usually found in October or August, booked 70 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap 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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:00 pm
DEN
-
SDF
2 stops34h 40m
Multiple Airlines
Wed 3/41:19 pm
SDF
-
DEN
1 stop11h 40m
Multiple Airlines
Deal found 1/28$231
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:19 pm
DEN
-
SDF
2 stops24h 19m
Multiple Airlines
Mon 3/21:19 pm
SDF
-
DEN
1 stop30h 58m
Multiple Airlines
Deal found 1/26$261
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:00 am
DEN
-
SDF
1 stop24h 26m
Multiple Airlines
Tue 3/33:33 pm
SDF
-
DEN
2 stops19h 58m
Multiple Airlines
Deal found 1/27$269
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Tue 3/33:33 pm
SDF
-
DEN
2 stops32h 02m
Multiple Airlines
Deal found 1/27$272
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:00 am
DEN
-
SDF
2 stops24h 40m
Multiple Airlines
Sun 3/811:14 am
SDF
-
DEN
1 stop23h 06m
Multiple Airlines
Deal found 1/26$276
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Thu 2/263:33 pm
SDF
-
DEN
2 stops18h 54m
Multiple Airlines
Deal found 1/28$295
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2512:30 pm
DEN
-
SDF
1 stop22h 56m
Multiple Airlines
Tue 3/311:14 pm
SDF
-
DEN
2 stops31h 29m
Multiple Airlines
Deal found 1/28$301
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/511:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Sat 3/712:00 pm
SDF
-
DEN
2 stops14h 16m
Multiple Airlines
Deal found 1/27$312
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 2/259:40 am
DEN
-
SDF
Nonstop2h 39m
United Airlines
Wed 3/43:15 pm
SDF
-
DEN
Nonstop3h 16m
United Airlines
Deal found 1/28$317

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$231
(Kiwi.com)

One-way from

$100
(Trip.com)

Popular in

January

Cheapest in

October

Average price

$591

Good round-trip deal

$419 or less

Good one-way deal

$256 or less
Provider with most accurate pricing for Denver Intl-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Louisville Intl flights.
Search Deals
From Denver Intl to Louisville Intl
Search Deals
One-way flight from Denver Intl to Louisville Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Louisville Intl.
Search Deals
Price to beat on a one-way flight from Denver Intl to Louisville Intl.
Search Deals

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 January 29, 2026.
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

Wed 4/15

3:15 pm-10:30 pm

1 stop5h 15m

Louisville Intl

Tue 4/21

3:36 pm-4:45 pm

Nonstop3h 09m

$327

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 2/24

7:00 am-4:50 pm

2 stops7h 50m

Louisville Intl

Tue 3/3

6:45 am-1:50 pm

2 stops9h 05m

$347

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 4/28

6:20 am-2:30 pm

1 stop6h 10m

Louisville Intl

Sat 5/2

11:12 am-3:17 pm

1 stop6h 05m

$359

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Thu 3/5

5:25 pm-9:59 pm

Nonstop2h 34m

Louisville Intl

Sat 3/7

8:54 am-10:11 am

Nonstop3h 17m

$361

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Wed 4/15

1:35 pm-10:55 pm

1 stop7h 20m

Louisville Intl

Mon 4/20

6:55 am-12:00 pm

2 stops7h 05m

$364

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 2/10

11:59 pm-1:00 pm

1 stop11h 01m

Louisville Intl

Sat 2/14

12:00 pm-11:39 am

2 stops25h 39m

$380

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Thu 4/23

5:20 am-11:40 am

1 stop4h 20m

Louisville Intl

Mon 4/27

6:55 am-12:00 pm

2 stops7h 05m

$386

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 4/28

9:40 am-11:59 pm

2 stops12h 19m

Louisville Intl

Wed 5/6

7:25 pm-11:15 pm

1 stop5h 50m

$389

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Wed 4/1

10:25 am-2:55 pm

Nonstop2h 30m

Louisville Intl

Sun 4/5

5:25 pm-10:40 pm

1 stop7h 15m

$392

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

Tue 4/28

7:00 am-4:42 pm

1 stop7h 42m

Louisville Intl

Fri 5/1

6:07 pm-9:27 pm

1 stop5h 20m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 23 results
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Compare providers for flights from Denver to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Louisville in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 23, 2026.

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 70 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, February is the cheapest month in which you can book a flight from Denver to Louisville (average of $54). Flying from Denver to Louisville in April is currently the most expensive (average of $120). 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 January 29, 2026.

It’s optimal to fly from Denver to Louisville in the evening. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight at noon.

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 January 29, 2026.
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
4,267 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,128 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,215 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,205 reviews
Southwest
8.0
Very good
4,267 reviews

Boarding

8.1

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to Louisville?

    Departing from Denver to Louisville will take you 5h 15m. Airlines will cover a distance of 1021 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Cheapflights users have booked flights from Denver to Louisville round-trip from $149. Other airlines that can offer you cheap pricing are American Airlines, from $231, and United Airlines, from $267. Delta is currently priced 68% below the average price you’ll pay for this route.

  • 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 (82%), Air Canada (80%), Southwest (59%).

  • What are the cheapest flights from Denver to Louisville?

    The cheapest flight price from Denver to Louisville is $161. On average you can expect to pay $361. The most popular route, (Denver Intl - Louisville Intl), can usually be booked for $269.

  • 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, February is the cheapest month in which you can book a flight from Denver to Louisville (average of $54). Flying from Denver to Louisville in April is currently the most expensive (average of $120). 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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Alternative routes for Denver to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$149Average$370FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$231Average$417FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$267Average$492FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$446FlexibilityNo cancel feeOn-time63%

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