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$117+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DEN
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to Denver Intl are usually found in April or August, booked 77 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap 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 August 18, 2025.

Round-trip from

$237
(American Airlines)

One-way from

$117
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$387

Good round-trip deal

$390 or less

Good one-way deal

$163 or less
From Louisville Intl to Denver Intl
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One-way flight from Louisville Intl to Denver Intl
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Louisville Intl to Denver Intl.
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Price to beat on a one-way flight from Louisville Intl to Denver Intl.
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Find 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 August 18, 2025.

This American Airlines deal was found by Cheapflights users on 8/17. 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 9/167:00 amSDF - DEN
1 stop11h 47mAmerican Airlines
Tue 9/239:47 amDEN - SDF
1 stop11h 16mAmerican Airlines
Deal found 8/17$237
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/273:30 pmSDF - DEN
Nonstop2h 58mUnited Airlines
Tue 9/305:45 pmDEN - SDF
Nonstop2h 45mUnited Airlines
Deal found 8/18$247
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/162:42 pmSDF - DEN
1 stop9h 34mAmerican Airlines
Sat 9/2010:31 amDEN - SDF
1 stop5h 03mAmerican Airlines
Deal found 8/17$252
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:36 pmSDF - DEN
1 stop5h 37mUnited Airlines
Tue 9/239:49 amDEN - SDF
Nonstop2h 39mUnited Airlines
Deal found 8/18$257
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Mon 9/84:20 pmSDF - DEN
1 stop13h 40mMultiple Airlines
Wed 9/1010:29 pmDEN - SDF
1 stop14h 51mMultiple Airlines
Deal found 8/15$258
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 11/149:12 pmSDF - DEN
1 stop13h 56mMultiple Airlines
Tue 11/188:13 pmDEN - SDF
2 stops25h 32mMultiple Airlines
Deal found 8/17$259
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/54:20 pmSDF - DEN
1 stop13h 40mMultiple Airlines
Wed 9/1010:29 pmDEN - SDF
1 stop14h 51mMultiple Airlines
Deal found 8/15$266
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:56 pmSDF - DEN
1 stop5h 56mDelta
Fri 10/312:59 amDEN - SDF
1 stop6h 28mDelta
Deal found 8/18$267
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:12 pmSDF - DEN
1 stop6h 04mAmerican Airlines
Mon 9/159:46 amDEN - SDF
1 stop11h 17mAmerican Airlines
Deal found 8/18$268
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/198:13 pmSDF - DEN
1 stop14h 36mMultiple Airlines
Tue 9/235:45 pmDEN - SDF
2 stops37h 34mMultiple Airlines
Deal found 8/17$269
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Mon 10/132:57 pmSDF - DEN
1 stop15h 02mMultiple Airlines
Wed 10/1510:29 pmDEN - SDF
1 stop13h 33mMultiple Airlines
Deal found 8/16$270

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 August 18, 2025.
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

Thu 10/30

4:35 pm-5:30 pm

Nonstop2h 55m

Denver Intl

Mon 11/3

5:05 pm-9:30 pm

Nonstop2h 25m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 11/13

3:20 pm-4:29 pm

Nonstop3h 09m

Denver Intl

Fri 11/14

5:51 pm-10:30 pm

Nonstop2h 39m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 9/27

3:30 pm-4:28 pm

Nonstop2h 58m

Denver Intl

Tue 9/30

5:45 pm-10:30 pm

Nonstop2h 45m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 11/6

5:30 pm-6:25 pm

Nonstop2h 55m

Denver Intl

Sat 11/15

5:25 pm-9:50 pm

Nonstop2h 25m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 9/27

3:30 pm-4:28 pm

Nonstop2h 58m

Denver Intl

Sat 10/4

5:45 pm-10:30 pm

Nonstop2h 45m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Fri 11/14

5:30 pm-6:25 pm

Nonstop2h 55m

Denver Intl

Tue 11/18

5:05 pm-9:30 pm

Nonstop2h 25m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 10/7

6:00 am-6:55 am

Nonstop2h 55m

Denver Intl

Fri 10/10

6:10 pm-10:40 pm

Nonstop2h 30m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 10/30

4:35 pm-5:30 pm

Nonstop2h 55m

Denver Intl

Fri 10/31

5:00 pm-9:25 pm

Nonstop2h 25m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 10/28

6:00 am-6:55 am

Nonstop2h 55m

Denver Intl

Fri 10/31

5:00 pm-9:25 pm

Nonstop2h 25m

$247

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 9/20

6:00 pm-6:50 pm

Nonstop2h 50m

Denver Intl

Sat 9/27

12:55 pm-5:25 pm

Nonstop2h 30m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 16 results
1
2

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 August 8, 2025.

Booking 77 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, October is the cheapest month in which you can book a flight from Louisville to Denver (average of $197). Flying from Louisville to Denver in March is currently the most expensive (average of $278). 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 August 18, 2025.

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 13% on your trip compared to booking a flight at noon.

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 August 18, 2025.
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
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,925 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 2 flights from Louisville Intl to Denver Intl, all of which are around 2h 50m 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 116 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 United Airlines fly from Louisville to Denver in about 2h 55m. The time it takes to get you to your destination is usually consistent. The distance from Louisville to Denver is about 1021 mi. Most flights are nonstop.

  • 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 $196, and Southwest, from $267. 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 Air Canada (92%), United Airlines (77%) or Southwest (73%) 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 $588, our data indicates the cheapest price to be $108. The most popular route (Louisville Intl - Denver Intl), is priced around $247.

  • 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, October is the cheapest month in which you can book a flight from Louisville to Denver (average of $197). Flying from Louisville to Denver in March is currently the most expensive (average of $278). 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
Westminster
Black Hawk
Golden
Winter Park
Greeley
Lone Tree
Lakewood
Cripple Creek
Silverthorne
Thornton
Broomfield
Frisco
Manitou Springs
Grand Lake
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Brighton
Longmont

Browse thousands of different options on Cheapflights for your next trip

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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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$196Average$376FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$211Average$419FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$267Average$427FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$315Average$427FlexibilityNo cancel feeOn-time69%

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