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$118+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DEN
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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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”

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3. Compare prices and book

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Cheapflights Tip: The best prices from Louisville Intl to Denver Intl are usually found in August or January, booked 45 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 April 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/18. 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 5/810:33 am
SDF
-
DEN
2 stops13h 51m
Multiple Airlines
Sat 5/911:59 pm
DEN
-
SDF
1 stop18h 25m
Multiple Airlines
Deal found 4/18$337
This Southwest deal was found by Cheapflights users on 4/22. 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.
Mon 6/18:10 pm
SDF
-
DEN
1 stop5h 05m
Southwest
Tue 6/97:40 pm
DEN
-
SDF
Nonstop2h 35m
Southwest
Deal found 4/22$343
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 8/266:49 am
SDF
-
DEN
1 stop6h 56m
American Airlines
Mon 8/3112:39 pm
DEN
-
SDF
1 stop7h 38m
American Airlines
Deal found 4/20$344
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 4/302:26 pm
SDF
-
DEN
1 stop11h 33m
Multiple Airlines
Sun 5/38:20 am
DEN
-
SDF
2 stops23h 08m
Multiple Airlines
Deal found 4/18$345
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/68:06 pm
SDF
-
DEN
1 stop21h 22m
Multiple Airlines
Sun 5/106:45 am
DEN
-
SDF
2 stops24h 43m
Multiple Airlines
Deal found 4/21$349
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/236:27 pm
SDF
-
DEN
1 stop23h 10m
Multiple Airlines
Tue 6/26:03 am
DEN
-
SDF
1 stop24h 33m
Multiple Airlines
Deal found 4/21$351
This Delta deal was found by Cheapflights users on 4/21. 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.
Wed 5/273:29 pm
SDF
-
DEN
1 stop6h 32m
Delta
Thu 5/281:50 pm
DEN
-
SDF
1 stop6h 46m
Delta
Deal found 4/21$352
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 4/302:26 pm
SDF
-
DEN
1 stop11h 33m
Multiple Airlines
Mon 5/411:59 pm
DEN
-
SDF
2 stops30h 37m
Multiple Airlines
Deal found 4/20$353
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 7/25:03 pm
SDF
-
DEN
2 stops39h 28m
Multiple Airlines
Wed 7/811:49 pm
DEN
-
SDF
1 stop12h 44m
Multiple Airlines
Deal found 4/20$355
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/238:06 pm
SDF
-
DEN
2 stops28h 58m
Multiple Airlines
Sat 5/307:00 am
DEN
-
SDF
1 stop10h 26m
Multiple Airlines
Deal found 4/21$358

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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$337
(Kiwi.com)

One-way from

$118
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$425

Good round-trip deal

$407 or less

Good one-way deal

$233 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. 0% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 23, 2026.
Use the filters below to find and compare flights from Louisville to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Wed 6/3

7:00 am-11:35 am

2 stops6h 35m

Denver Intl

Mon 6/8

5:30 am-4:25 pm

1 stop8h 55m

$331
Quickest round-trip

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 6/6

2:55 pm-3:40 pm

Nonstop2h 45m

Denver Intl

Wed 6/10

7:40 pm-12:15 am

Nonstop2h 35m

$391

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sun 8/23

3:24 pm-8:19 pm

1 stop6h 55m

Denver Intl

Wed 8/26

12:00 pm-8:52 pm

1 stop6h 52m

$410

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 5/21

2:40 pm-7:20 pm

2 stops6h 40m

Denver Intl

Mon 5/25

8:25 am-3:00 pm

1 stop4h 35m

$427

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Fri 5/29

1:10 pm-2:05 pm

Nonstop2h 55m

Denver Intl

Mon 6/1

5:20 am-11:40 am

1 stop4h 20m

$442

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Wed 5/6

6:08 pm-9:27 pm

1 stop5h 19m

Denver Intl

Tue 5/12

6:05 am-1:51 pm

1 stop5h 46m

$453

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Fri 6/5

8:10 am-2:04 pm

1 stop7h 54m

Denver Intl

Sat 6/13

3:15 pm-12:16 am

1 stop7h 01m

$476

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Fri 5/29

3:25 pm-4:24 pm

Nonstop2h 59m

Denver Intl

Mon 6/1

6:08 pm-10:59 pm

Nonstop2h 51m

$489

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 5/28

3:25 pm-4:24 pm

Nonstop2h 59m

Denver Intl

Sun 5/31

9:45 am-2:28 pm

Nonstop2h 43m

$489

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sun 8/23

3:25 pm-4:25 pm

Nonstop3h 00m

Denver Intl

Wed 8/26

8:45 am-6:56 pm

1 stop8h 11m

$490

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 22 resultsSorted by cheapest first
1
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3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice 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 April 17, 2026.

Booking 45 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, August is the cheapest month in which you can book a flight from Louisville to Denver (average of $377). Flying from Louisville to Denver in December is currently the most expensive (average of $499). 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 April 23, 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 18% on your trip compared to booking a flight in the morning.

How much does it cost to fly round-trip from Louisville to Denver?

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 April 23, 2026.
See what other customers who have flown with Southwest,Delta, andUnited 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
4,330 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,330 reviews
Southwest
8.0
Very good
4,330 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,430 reviews
Southwest
8.0
Very good
4,330 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,625 reviews
Southwest
8.0
Very good
4,330 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,647 reviews
Southwest
8.0
Very good
4,330 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 45m 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 104 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 Southwest and Delta fly from Louisville to Denver in about 6h 35m. The time it takes to get you to your destination can typically vary by up to 20m. 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 $98. Other airlines that can offer you cheap pricing are American Airlines, from $175, and United Airlines, from $256. Delta is priced at 77% 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 United Airlines (89%), Air Canada (86%) or Southwest (84%) 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 $609, our data indicates the cheapest price to be $157. The most popular route (Louisville Intl - Denver Intl), is priced around $311.

  • 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, August is the cheapest month in which you can book a flight from Louisville to Denver (average of $377). Flying from Louisville to Denver in December is currently the most expensive (average of $499). 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
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
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.

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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$396FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$175Average$316FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$256Average$442FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$267Average$422FlexibilityNo cancel feeOn-time63%

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