DEN - SDF

$97 Find Cheap Flights from Denver to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Louisville departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Louisville, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$247
Overall average: $430
Multiple Airlines
Sun 3/1Wed 3/4
DEN - SDF • 1 stop
Cheapest non-stop
$361
Typical prices: $447-$883
United Airlines
Thu 4/23Mon 4/27
DEN - SDF • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers extra legroom benefits.
Southwest provides two free checked bags for travelers.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
American Airlines
Cheapest • from $333 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 59% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 21% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Denver to Louisville (DEN-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Louisville

Sun, Mar 1 - Wed, Mar 4
Multiple Airlines Logo
11:59 pm - 12:21 pm
DEN
-
SDF
10h 22m
1 stop
Multiple Airlines Logo
1:19 pm - 10:59 pm
SDF
-
DEN
11h 40m
1 stop
$247Multiple Airlines
Sat, Feb 21 - Mon, Mar 2
Multiple Airlines Logo
11:00 am - 1:26 pm
DEN
-
SDF
24h 26m
1 stop
Multiple Airlines Logo
1:19 pm - 9:41 pm
SDF
-
DEN
34h 22m
2 stops
$251Multiple Airlines
Tue, Feb 24 - Mon, Mar 2
Multiple Airlines Logo
11:59 pm - 12:21 pm
DEN
-
SDF
10h 22m
1 stop
Multiple Airlines Logo
1:19 pm - 9:41 pm
SDF
-
DEN
34h 22m
2 stops
$259Multiple Airlines
Wed, Feb 25 - Mon, Mar 2
Multiple Airlines Logo
6:20 pm - 11:43 am
DEN
-
SDF
15h 23m
1 stop
Multiple Airlines Logo
1:19 pm - 9:41 pm
SDF
-
DEN
34h 22m
2 stops
$262Multiple Airlines
Sat, Feb 21 - Tue, Feb 24
Multiple Airlines Logo
11:00 am - 1:26 pm
DEN
-
SDF
24h 26m
1 stop
Multiple Airlines Logo
3:33 pm - 7:02 am
SDF
-
DEN
17h 29m
2 stops
$269Multiple Airlines
Sat, Feb 21 - Sun, Mar 1
Multiple Airlines Logo
11:00 am - 1:26 pm
DEN
-
SDF
24h 26m
1 stop
Multiple Airlines Logo
3:33 pm - 9:57 am
SDF
-
DEN
44h 24m
2 stops
$270Multiple Airlines
Wed, Mar 4 - Fri, Mar 6
Multiple Airlines Logo
11:59 pm - 1:26 pm
DEN
-
SDF
11h 27m
2 stops
Multiple Airlines Logo
1:19 pm - 8:20 am
SDF
-
DEN
21h 01m
1 stop
$272Multiple Airlines
Sun, Mar 1 - Wed, Mar 4
Multiple Airlines Logo
11:05 am - 12:21 pm
DEN
-
SDF
23h 16m
2 stops
Multiple Airlines Logo
1:19 pm - 10:59 pm
SDF
-
DEN
11h 40m
1 stop
$273Multiple Airlines
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
11:00 am - 1:26 pm
DEN
-
SDF
24h 26m
1 stop
Multiple Airlines Logo
12:00 pm - 8:20 am
SDF
-
DEN
22h 20m
2 stops
$278Multiple Airlines
Sat, Feb 21 - Wed, Feb 25
Multiple Airlines Logo
11:00 am - 1:26 pm
DEN
-
SDF
24h 26m
1 stop
Multiple Airlines Logo
1:19 pm - 10:59 pm
SDF
-
DEN
11h 40m
1 stop
$283Multiple Airlines
Booking Insights

KAYAK's insights & trends for Denver to Louisville flights

Get data-powered insights and trends into flights from Denver to Louisville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to Louisville?

The average price of all round-trip flights from Denver to Louisville clicked on KAYAK for each day over the last 12 months.

For Denver to Louisville, Saturday is the cheapest day to fly on average and Monday is the most expensive. Flying from Louisville back to Denver, the best deals are generally found on Tuesday, with Sunday being the most expensive.

What is the cheapest month to fly from Denver to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Louisville is October, where tickets cost $371 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is $591 and $550 respectively.

Can I save money by flying with a layover from Denver to Louisville?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $437, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Louisville, you should book around 4 weeks before departure, which saves you about 59% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Expert advice

Expert advice for your flight from Denver to Louisville

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low seasonJanuary
Cheapest flight$101
Best time to beat the crowds but there is an average 25% increase in price.
Flight from Denver to Louisville

When to book flights from Denver to Louisville

Are your dates flexible? Find out the best times to travel from Denver to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Louisville

  • Where can your furry friend spend the night at Denver international airport?

    You are spending the night at Denver international airport; take your furry friend to the pet resort, which offers overnight pet stays. The resort offers flat-screen TVs, private apartments, massages, on-site medical professionals, and obedience lessons. Large dog apartments are available at the resort, with enormous indoor play spaces with indoor grass, plush rubber flooring, and a splash pool in the shape of a bone.

  • Where can passengers nurse their babies at Denver international airport?

    DEN provides mothers traveling with young children with a cozy, private area where they can pump or nurse their children. Three nursing rooms are conveniently positioned in the middle of each DEN concourse, one is on Level 5 near arrivals in the middle of the terminal, and the other two are on the far east side of Concourse B. Power outlets, a sink, a changing table, and comfortable seats are all provided in the rooms.

  • Which facilities does Denver international airport offer to persons with limited mobility?

    The Denver International Airport ensures visitors have a pleasant experience while traveling. Accessible parking is available at the airport for those with limited mobility. There is also a family restroom in Jeppesen Terminal. In addition, a remote-controlled, height-adjustable adult changing table, a normal toilet, and a sink are all included in the Companion Care restroom at DEN.

  • Which means of transport is ideal if you want to explore Louisville?

    Consider renting a car at Louisville International Airport if you are making travel plans to Louisville. The Louisville Palace Theater, Louisville Mega Cavern, and Churchill Downs are among the must-see locations. Additionally, Cherokee Park in Louisville Old Town is a lovely natural setting where you may stroll and take a break. Renting a car will allow you the freedom and flexibility to explore this area. In the lower-level baggage claim area, you can hire a car from companies like Alamo, Avis, Budget, Hertz, National, Payless, and Thrifty.

  • What is the cheapest flight from Denver to Louisville?

    In the last 3 days, the lowest price for a flight from Denver to Louisville was $101 for a one-way ticket and $247 for a round-trip.

  • Do I need a passport to fly between Denver and Louisville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to Louisville?

    Denver and Louisville are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at Louisville Intl.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Louisville?

    JetBlue, and Alaska Airlines offer inflight Wi-Fi service on the Denver to Louisville flight route.

  • Which aircraft models fly most regularly from Denver to Louisville?

    The Airbus A319 is the aircraft model that flies most regularly on the Denver to Louisville flight route.

  • Which airline alliances offer flights from Denver to Louisville?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Denver and Louisville, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Denver to Louisville?

    There are nonstop flights from Denver to Louisville on a daily basis.

  • Which is the best airline for flights from Denver to Louisville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Denver to Louisville are Southwest and Delta. With an average price for the route of $437 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $376 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Denver to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Denver with another airline. Booking your flights between Denver and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $256 or less one-way and $404 or less round-trip.
  • When arriving at Louisville Airport (SDF), mothers who need to take care of their babies can use the airport's breastfeeding area. The Mother's Room has a sizable common room and three separate, independent suites, each with a locking door, dimming lights, a cozy glider, a changing station, and many outlets with USB ports.
  • There are numerous food outlets at Denver International Airport (DEN) where travelers can purchase food. Eats Delivered service also delivers food from a few of the airport's most popular DEN eateries to any location. In addition, the AtYourGate app can be downloaded by users, and it will deliver meals to you at your gate, in the Jeppesen Terminal, or even at baggage claim.
  • Military personnel should utilize the Louisville Airport USO lounge. The lounge is in the hallway on the land side, behind the west ticket counters. Upon arrival at the airport, all service members and their families can receive assistance from military personnel. They can be found in the hallway behind the west ticket counters in the landside terminal.
  • Denver International Airport is pet-friendly and has private restrooms outside the Jeppesen Terminal and on each concourse. In addition, the indoor pet relief areas also offer service animals and furry friends a cozy and inviting space to take care of business before or after a flight.
  • Most airlines flying on the Denver to Louisville route have a layover stop. The common layover stop for flights on this route is O'Hare international airport. For passengers who want a direct flight, consider booking a flight ticket with Frontier, United Airlines, and Southwest.

Prefer to fly direct from Denver to Louisville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to Louisville Intl.
Find which airlines fly direct from Denver Intl Airport to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Louisville Intl

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Direct returns

Louisville Intl to Denver Intl

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Denver to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Denver to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4273 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

10.0 ExcellentAnonymous, Feb 2026
MSY - PHX
Read more Southwest reviews

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Everything you need to know for your flight from Denver to Louisville

Information on your arrival and departure airports