HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$109+ Cheap flights from Louisville to Denver (SDF - DEN)

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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DEN
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisville to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Louisville Intl to Denver Intl are usually found in April or August, booked 68 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Louisville to Denver

Cheapest flights from Louisville to Denver
Explore the most affordable flight options available from Louisville to Denver. 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 3/41:19 pm
SDF
-
DEN
1 stop11h 40m
Multiple Airlines
Tue 3/1011:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Deal found 1/28$211
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 3/33:33 pm
SDF
-
DEN
2 stops18h 53m
Multiple Airlines
Tue 3/1011:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Deal found 1/28$222
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.
Fri 3/61:19 pm
SDF
-
DEN
1 stop21h 01m
Multiple Airlines
Tue 3/1011:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Deal found 1/28$228
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.
Thu 3/52:26 pm
SDF
-
DEN
1 stop6h 45m
Multiple Airlines
Tue 3/1011:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Deal found 1/28$231
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 3/41:19 pm
SDF
-
DEN
1 stop11h 40m
Multiple Airlines
Wed 3/1111:59 pm
DEN
-
SDF
2 stops12h 34m
Multiple Airlines
Deal found 1/28$232
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 3/41:19 pm
SDF
-
DEN
1 stop11h 40m
Multiple Airlines
Sat 3/711:49 pm
DEN
-
SDF
2 stops29h 51m
Multiple Airlines
Deal found 1/28$242
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 3/41:19 pm
SDF
-
DEN
1 stop11h 40m
Multiple Airlines
Mon 3/99:00 pm
DEN
-
SDF
2 stops15h 38m
Multiple Airlines
Deal found 1/28$247
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.
Fri 3/61:19 pm
SDF
-
DEN
1 stop21h 01m
Multiple Airlines
Wed 3/1111:59 pm
DEN
-
SDF
2 stops12h 34m
Multiple Airlines
Deal found 1/28$249
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 3/41:19 pm
SDF
-
DEN
1 stop11h 40m
Multiple Airlines
Sun 3/811:59 pm
DEN
-
SDF
1 stop10h 22m
Multiple Airlines
Deal found 1/28$251
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.
Thu 2/262:26 pm
SDF
-
DEN
2 stops33h 15m
Multiple Airlines
Tue 3/36:20 pm
DEN
-
SDF
1 stop16h 01m
Multiple Airlines
Deal found 1/28$253

Find flight deals from Louisville to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Denver (DEN). 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

$211
(Kiwi.com)

One-way from

$109
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$420

Good round-trip deal

$387 or less

Good one-way deal

$218 or less
Provider with most accurate pricing for Louisville Intl-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Denver Intl flights.
Search Deals
From Louisville Intl to Denver Intl
Search Deals
One-way flight from Louisville Intl to Denver Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 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 Louisville Intl to Denver Intl.
Search Deals
Price to beat on a one-way flight from Louisville Intl to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Denver 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 Louisville to Denver that are best for you.

Fly from

Louisville

Fly to

Denver

Route

Depart

Return

Price

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 3/3

3:15 pm-4:31 pm

Nonstop3h 16m

Denver Intl

Wed 3/4

6:00 pm-10:37 pm

Nonstop2h 37m

$317

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 3/10

5:00 pm-10:25 pm

2 stops7h 25m

Denver Intl

Tue 3/17

10:25 am-2:55 pm

Nonstop2h 30m

$332

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Mon 3/2

1:30 pm-2:30 pm

Nonstop3h 00m

Denver Intl

Wed 3/4

1:25 pm-10:10 pm

1 stop6h 45m

$349

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Mon 4/20

7:20 am-12:45 pm

1 stop7h 25m

Denver Intl

Wed 4/22

6:00 am-1:17 pm

1 stop5h 17m

$359

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 5/5

8:55 am-2:10 pm

1 stop7h 15m

Denver Intl

Thu 5/7

6:35 am-3:00 pm

1 stop6h 25m

$359

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Mon 3/2

3:15 pm-4:31 pm

Nonstop3h 16m

Denver Intl

Mon 3/9

5:25 pm-9:59 pm

Nonstop2h 34m

$361

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 3/26

6:10 am-12:00 pm

1 stop7h 50m

Denver Intl

Mon 3/30

12:55 pm-5:15 pm

Nonstop2h 20m

$371

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Mon 3/2

6:55 am-12:35 pm

2 stops7h 40m

Denver Intl

Mon 3/9

12:55 pm-5:15 pm

Nonstop2h 20m

$376

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 5/9

6:40 am-2:00 pm

2 stops9h 20m

Denver Intl

Sat 5/16

12:30 pm-4:55 pm

Nonstop2h 25m

$376

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Fri 4/24

7:48 pm-1:40 pm

2 stops19h 52m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 20 results
1
2

Compare providers for flights from Louisville to Denver

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 Louisville to Denver in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 Louisville-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Denver 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 Louisville-Denver 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 Louisville to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Louisville 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 Louisville to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Denver. Price data was last updated on January 23, 2026.

Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Louisville to Denver (average of $69). Flying from Louisville to Denver in December is currently the most expensive (average of $111). 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 SDF to DEN?

Find hourly flight availability from Louisville to Denver. 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.

A simple way to save on the total cost of your ticket is to fly from Louisville to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated January 29, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines from Louisville to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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 Louisville to Denver. 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 Louisville to Denver?

    Booking a flight from Louisville Intl (SDF) to Denver Intl (DEN) is your only option if you wish to fly from Louisville to Denver. On a typical day, there are 3 flights from Louisville Intl to Denver Intl, all of which are around 2h 55m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Louisville Intl to Denver.

  • How popular is this Louisville to Denver flight route?

    This flight path from Louisville Intl to Denver Intl was viewed by 112 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 Louisville to Denver?

    Airlines like United Airlines and Southwest fly from Louisville to Denver in about 3h 16m. The time it takes to get you to your destination can typically vary by up to 4h 09m. The distance from Louisville to Denver is about 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 Louisville to Denver round-trip?

    Cheapflights users have booked flights from Louisville to Denver round-trip from $175. Other airlines that can offer you cheap pricing are Delta, from $211, and United Airlines, from $243. American Airlines is priced at 58% lower than the current average price of a flight leaving 3 months from now.

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

    No one likes to see their flight delayed. When booking a flight from Louisville to Denver consider choosing Southwest (85%), United Airlines (78%) or Air Canada (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Louisville to Denver?

    Looking for the cheapest flight from Louisville to Denver? While on average our users pay $513, our data indicates the cheapest price to be $180. The most popular route (Louisville Intl - Denver Intl), is priced around $268.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville to Denver 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 Louisville to Denver?

    Currently, November is the cheapest month in which you can book a flight from Louisville to Denver (average of $69). Flying from Louisville to Denver in December is currently the most expensive (average of $111). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Cripple Creek
Winter Park
Central City
Glendale
Manitou Springs
Frisco
Fort Morgan
Brighton
Evergreen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisville to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Cincinnati to Denver flights
Nashville to Denver flights
Knoxville to Denver flights
Lexington to Denver flights
Nashville to Aspen flights
Nashville to Colorado Springs flights
Lexington to Aspen flights
Knoxville to Colorado Springs flights
Blountville to Denver flights
Nashville to Vail flights
Cincinnati to Colorado Springs flights
Cincinnati to Vail flights
Louisville to Colorado Springs flights
Cincinnati to Hayden flights
Evansville to Denver flights
Cincinnati to Aspen flights
Lexington to Colorado Springs flights
Louisville to Grand Junction flights
Cincinnati to Grand Junction flights
Cincinnati to Montrose flights
Knoxville to Montrose flights
Knoxville to Grand Junction flights
Lexington to Grand Junction flights
Nashville to Gunnison flights
Nashville to Grand Junction flights
Knoxville to Aspen flights
Cincinnati to Durango flights
Louisville to Durango flights
Nashville to Durango flights
Lexington to Montrose flights
Lexington to Durango flights
Louisville to Aspen flights
Huntington to Denver flights
Knoxville to Vail flights
Evansville to Colorado Springs flights
Cincinnati to Gunnison flights
Blountville to Colorado Springs flights
Nashville to Montrose flights
Knoxville to Durango flights
Paducah to Colorado Springs flights
Evansville to Vail flights
Cincinnati to Cortez flights
Blountville to Grand Junction flights
Owensboro to Colorado Springs flights
Blountville to Montrose flights
Paducah to Denver flights
Owensboro to Denver flights
Evansville to Grand Junction flights

Top 4 airlines flying from Louisville to Denver

Discover the top 4 airlines that operate flights from Louisville to Denver. 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
American AirlinesCheapest$175Average$351FlexibilityNo cancel feeOn-time71%
DeltaCheapest$211Average$370FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$243Average$427FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$267Average$415FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.