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$67+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SDF
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Louisville Intl are usually found in March or February, booked 70 days in advance, depart on a Tuesday 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 septiembre 11, 2025.

Round-trip from

$272
(Kiwi.com)

One-way from

$67
(United Airlines)

Popular in

April

Cheapest in

March

Average price

$447

Good round-trip deal

$371 or less

Good one-way deal

$215 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 ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
dom. 10/56:00 amDEN - SDF
2 stops26h 52mMultiple Airlines
mar. 10/1410:01 amSDF - DEN
1 stop15h 15mMultiple Airlines
Deal found 9/11$272
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
dom. 10/510:29 pmDEN - SDF
1 stop13h 33mMultiple Airlines
sáb. 10/189:25 amSDF - DEN
1 stop13h 14mMultiple Airlines
Deal found 9/11$273
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
vie. 10/106:37 amDEN - SDF
1 stop23h 58mMultiple Airlines
mar. 10/1410:01 amSDF - DEN
1 stop15h 15mMultiple Airlines
Deal found 9/11$274
This Southwest deal was found by Cheapflights users on 9/10. 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.
lun. 10/611:45 pmDEN - SDF
1 stop9h 15mSouthwest
mar. 10/76:55 pmSDF - DEN
1 stop5h 25mSouthwest
Deal found 9/10$275
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
jue. 10/96:00 amDEN - SDF
2 stops30h 02mMultiple Airlines
jue. 10/167:15 amSDF - DEN
1 stop18h 01mMultiple Airlines
Deal found 9/11$276
This United Airlines deal was found by Cheapflights users on 9/9. 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.
mar. 9/305:45 pmDEN - SDF
Nonstop2h 45mUnited Airlines
vie. 10/39:01 amSDF - DEN
Nonstop3h 00mUnited Airlines
Deal found 9/9$277
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
dom. 10/1911:59 pmDEN - SDF
1 stop17h 53mMultiple Airlines
vie. 10/248:10 pmSDF - DEN
2 stops21h 31mMultiple Airlines
Deal found 9/11$278
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
vie. 10/106:37 amDEN - SDF
1 stop23h 58mMultiple Airlines
lun. 10/132:57 pmSDF - DEN
1 stop15h 02mMultiple Airlines
Deal found 9/11$279
This United Airlines deal was found by Cheapflights users on 9/11. 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.
mar. 10/75:45 pmDEN - SDF
Nonstop2h 45mUnited Airlines
mié. 10/159:01 amSDF - DEN
Nonstop3h 00mUnited Airlines
Deal found 9/11$280
This Southwest deal was found by Cheapflights users on 9/10. 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.
jue. 11/271:50 pmDEN - SDF
Nonstop2h 25mSouthwest
mar. 12/26:05 amSDF - DEN
Nonstop2h 55mSouthwest
Deal found 9/10$281
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
mié. 10/1510:29 pmDEN - SDF
1 stop13h 33mMultiple Airlines
sáb. 10/1810:17 amSDF - DEN
2 stops9h 52mMultiple Airlines
Deal found 9/9$282
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
mar. 10/712:36 amDEN - SDF
1 stop15h 19mMultiple Airlines
lun. 10/132:57 pmSDF - DEN
1 stop15h 02mMultiple Airlines
Deal found 9/10$283

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 septiembre 11, 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

mar. 9/30

5:45 pm-10:30 pm

Nonstop2h 45m

Louisville Intl

vie. 10/3

9:01 am-10:01 am

Nonstop3h 00m

$277

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

mar. 10/7

8:28 pm-10:01 am

1 stop11h 33m

Louisville Intl

mié. 10/15

9:01 am-10:01 am

Nonstop3h 00m

$280

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

jue. 10/9

5:45 pm-10:30 pm

Nonstop2h 45m

Louisville Intl

jue. 10/16

3:30 pm-4:28 pm

Nonstop2h 58m

$287

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

jue. 10/30

5:45 am-1:53 pm

1 stop6h 08m

Louisville Intl

mié. 11/5

5:58 pm-9:41 pm

1 stop5h 43m

$297

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

mar. 11/25

3:20 pm-10:29 pm

1 stop5h 09m

Louisville Intl

mar. 12/2

3:33 pm-4:43 pm

Nonstop3h 10m

$300

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

vie. 10/31

5:51 pm-10:30 pm

Nonstop2h 39m

Louisville Intl

lun. 11/3

3:20 pm-4:29 pm

Nonstop3h 09m

$306

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

jue. 10/30

5:51 pm-10:30 pm

Nonstop2h 39m

Louisville Intl

mié. 11/5

9:00 am-12:30 pm

1 stop5h 30m

$306

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

mar. 10/14

7:10 pm-11:35 pm

Nonstop2h 25m

Louisville Intl

jue. 10/16

8:10 pm-11:40 pm

1 stop5h 30m

$314

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

mar. 2/17

5:25 pm-9:57 pm

Nonstop2h 32m

Louisville Intl

vie. 2/20

7:30 am-7:31 pm

1 stop14h 01m

$315

DenverLouisville

DEN - SDF

DENSDF

Denver Intl

jue. 10/16

5:45 pm-10:30 pm

Nonstop2h 45m

Louisville Intl

sáb. 10/18

3:30 pm-4:28 pm

Nonstop2h 58m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

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 August 29, 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 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, 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 septiembre 11, 2025.

It’s optimal to fly from Denver to Louisville in the evening. By choosing this option you can save up to 38% 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 septiembre 11, 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
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 4 daily flights to Louisville from 4 different airlines. 2h 30m 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 4 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 2h 45m. 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 $182. Other airlines that can offer you cheap pricing are Delta, from $266, and United Airlines, from $296. American Airlines is currently priced 60% 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 (70%), Southwest (63%), Air Canada (47%).

  • What are the cheapest flights from Denver to Louisville?

    The cheapest flight price from Denver to Louisville is $123. On average you can expect to pay $528. The most popular route, (Denver Intl - Louisville Intl), can usually be booked for $133.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$182Average$398FlexibilityNo cancel feeOn-time71%
DeltaCheapest$266Average$403FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$296Average$489FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$440FlexibilityNo cancel feeOn-time63%

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