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$67+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DEN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 56 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 September 15, 2025.

Round-trip from

$267
(Kiwi.com)

One-way from

$67
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$417

Good round-trip deal

$367 or less

Good one-way deal

$188 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 ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($5 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 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 September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/295:31 pmSDF - DEN
2 stops15h 20mMultiple Airlines
Sat 11/112:16 amDEN - SDF
1 stop21h 31mMultiple Airlines
Deal found 9/14$267
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/2011:47 amSDF - DEN
2 stops13h 38mMultiple Airlines
Tue 10/2112:36 amDEN - SDF
1 stop15h 19mMultiple Airlines
Deal found 9/14$269
This Kiwi.com deal was found by Cheapflights users on 9/14. 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
Mon 10/209:19 pmDEN - SDF
2 stops42h 36mMultiple Airlines
Deal found 9/14$275
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 11/136:00 amSDF - DEN
2 stops13h 44mMultiple Airlines
Thu 11/1311:59 pmDEN - SDF
1 stop18h 23mMultiple Airlines
Deal found 9/14$276
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/157:00 amSDF - DEN
1 stop18h 30mUnited Airlines
Tue 10/215:45 pmDEN - SDF
Nonstop2h 45mUnited Airlines
Deal found 9/12$278
This Delta deal was found by Cheapflights users on 9/12. 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 10/44:26 pmSDF - DEN
1 stop5h 28mDelta
Fri 10/1012:55 amDEN - SDF
1 stop6h 55mDelta
Deal found 9/12$288
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/96:58 pmSDF - DEN
2 stops15h 45mMultiple Airlines
Wed 10/1510:29 pmDEN - SDF
1 stop13h 33mMultiple Airlines
Deal found 9/14$290
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/107:15 amSDF - DEN
1 stop12h 15mMultiple Airlines
Wed 10/1510:29 pmDEN - SDF
1 stop13h 33mMultiple Airlines
Deal found 9/14$295
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/43:30 pmSDF - DEN
Nonstop2h 58mUnited Airlines
Sat 10/115:58 pmDEN - SDF
1 stop14h 03mUnited Airlines
Deal found 9/12$296
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 12/66:00 amSDF - DEN
1 stop13h 07mMultiple Airlines
Mon 12/86:45 amDEN - SDF
2 stops15h 00mMultiple Airlines
Deal found 9/14$297

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 September 15, 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

Wed 10/29

5:31 pm-6:51 am

2 stops15h 20m

Denver Intl

Sat 11/1

12:16 am-10:47 pm

1 stop21h 31m

$267

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 10/4

4:26 pm-7:54 pm

1 stop5h 28m

Denver Intl

Fri 10/10

12:55 am-9:50 am

1 stop6h 55m

$288

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 10/4

3:30 pm-4:28 pm

Nonstop2h 58m

Denver Intl

Sat 10/11

5:58 pm-10:01 am

1 stop14h 03m

$296

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 10/11

5:55 pm-6:50 pm

Nonstop2h 55m

Denver Intl

Sat 10/18

11:40 am-4:10 pm

Nonstop2h 30m

$347

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 10/14

6:00 am-6:55 am

Nonstop2h 55m

Denver Intl

Tue 10/21

7:10 pm-11:35 pm

Nonstop2h 25m

$347

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Mon 10/20

3:30 pm-4:28 pm

Nonstop2h 58m

Denver Intl

Wed 10/22

5:45 pm-10:30 pm

Nonstop2h 45m

$347

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Thu 11/13

8:00 am-9:08 am

Nonstop3h 08m

Denver Intl

Thu 11/13

5:51 pm-10:30 pm

Nonstop2h 39m

$347

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sat 11/1

3:20 pm-4:29 pm

Nonstop3h 09m

Denver Intl

Thu 11/13

5:51 pm-10:30 pm

Nonstop2h 39m

$347

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Sun 11/2

7:13 am-1:58 pm

1 stop8h 45m

Denver Intl

Tue 11/4

7:22 am-10:55 pm

1 stop13h 33m

$355

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

Tue 10/21

8:45 am-12:40 pm

1 stop5h 55m

Denver Intl

Sat 10/25

9:45 am-2:28 pm

Nonstop2h 43m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 23 results
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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 September 12, 2025.

Booking 56 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 September 15, 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 September 15, 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
4,242 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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
4,242 reviews

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

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 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 115 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 Delta, United Airlines, and Southwest fly from Louisville to Denver in about 2h 55m. The time it takes to get you to your destination can typically vary by up to 2h 33m. 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 $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 cheapest airlines to fly from Louisville to Denver one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $67. Users have also found prices from $95 and $109 on Southwest and Delta, respectively.

  • 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 (90%), United Airlines (82%) or Southwest (80%) 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 $752, our data indicates the cheapest price to be $114. The most popular route (Louisville Intl - Denver Intl), is priced around $212.

  • 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
Black Hawk
Westminster
Golden
Winter Park
Lakewood
Broomfield
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Louisville to Denver

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$175Average$386FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$371FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$267Average$427FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$307Average$428FlexibilityNo cancel feeOn-time69%

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