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$127+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DEN
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to Denver Intl are usually found in September or April, booked 89 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 julio 3, 2025.

Round-trip from

$243
(American Airlines)

One-way from

$127
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$436

Good round-trip deal

$433 or less

Good one-way deal

$249 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. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 3, 2025.

This American Airlines deal was found by Cheapflights users on 7/2. 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.
mar. 8/52:33 pmSDF - DEN
1 stop10h 14mAmerican Airlines
jue. 8/77:22 amDEN - SDF
1 stop8h 16mAmerican Airlines
Deal found 7/2$243
This United Airlines deal was found by Cheapflights users on 7/1. 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.
jue. 8/73:25 pmSDF - DEN
Nonstop3h 00mUnited Airlines
jue. 8/149:45 amDEN - SDF
Nonstop2h 38mUnited Airlines
Deal found 7/1$257
This Southwest deal was found by Cheapflights users on 7/1. 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.
sáb. 8/96:00 pmSDF - DEN
Nonstop2h 50mSouthwest
mar. 8/124:20 pmDEN - SDF
Nonstop2h 35mSouthwest
Deal found 7/1$266
This Delta deal was found by Cheapflights users on 7/1. 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.
mar. 9/237:44 pmSDF - DEN
1 stop5h 24mDelta
mié. 10/86:45 amDEN - SDF
1 stop4h 54mDelta
Deal found 7/1$277
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1112:19 pmSDF - DEN
1 stop6h 24mSun Country Air
dom. 9/1410:05 amDEN - SDF
1 stop5h 28mSun Country Air
Deal found 7/2$299

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 julio 3, 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

mar. 8/5

2:33 pm-10:47 pm

1 stop10h 14m

Denver Intl

jue. 8/7

7:22 am-5:38 pm

1 stop8h 16m

$243

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

jue. 8/7

3:25 pm-4:25 pm

Nonstop3h 00m

Denver Intl

jue. 8/14

9:45 am-2:23 pm

Nonstop2h 38m

$257

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

sáb. 8/9

6:00 pm-6:50 pm

Nonstop2h 50m

Denver Intl

mar. 8/12

4:20 pm-8:55 pm

Nonstop2h 35m

$266

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

mar. 9/23

7:50 am-1:51 pm

1 stop8h 01m

Denver Intl

mar. 9/30

5:45 am-1:42 pm

1 stop5h 57m

$277

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

jue. 9/11

12:19 pm-4:43 pm

1 stop6h 24m

Denver Intl

dom. 9/14

10:05 am-5:33 pm

1 stop5h 28m

$299

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

lun. 9/29

9:57 am-4:47 pm

1 stop8h 50m

$127

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

lun. 9/29

3:30 pm-4:28 pm

Nonstop2h 58m

$129

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

jue. 9/11

7:33 pm-11:59 pm

1 stop6h 26m

$139

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

mar. 9/30

7:15 am-12:20 pm

2 stops7h 05m

$144

LouisvilleDenver

SDF - DEN

SDFDEN

Louisville Intl

dom. 8/10

10:03 am-11:50 pm

1 stop15h 47m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 12 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 June 27, 2025.

Booking 89 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 julio 3, 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.

Weekly flight availability from Louisville to Denver

Explore weekly flight availability from Louisville to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated julio 3, 2025.

The most flights from SDF to DEN are scheduled on a Wednesday (4 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (1 on average).

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 julio 3, 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
4,270 reviews

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,270 reviews
Southwest
8.0
Very good
4,270 reviews

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,970 reviews
Southwest
8.0
Very good
4,270 reviews

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,845 reviews
Southwest
8.0
Very good
4,270 reviews

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,270 reviews

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.2
Good
709 reviews
Southwest
8.0
Very good
4,270 reviews

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 72 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Louisville to Denver round-trip?

    Cheapflights users have booked flights from Louisville to Denver round-trip from $243. Other airlines that can offer you cheap pricing are United Airlines, from $257, and Southwest, from $266. American Airlines is priced at 42% 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 American Airlines. According to our data, you can fly for as low as $127. Users have also found prices from $129 and $139 on United Airlines 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 (95%), United Airlines (88%) or Southwest (52%) 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 $510, our data indicates the cheapest price to be $188. The most popular route (Louisville Intl - Denver Intl), is priced around $257.

  • 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Broomfield
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs

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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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$196Average$386FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$241Average$446FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$278Average$430FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$291Average$427FlexibilityNo cancel feeOn-time69%

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