DEN - SDF

$130 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 8/13. 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

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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Flights 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

Wed, Aug 13 - Wed, Sep 3
American Airlines Logo
12:04 pm - 11:02 pmDEN-SDF
8h 58m1 stop
American Airlines Logo
2:42 pm - 10:29 pmSDF-DEN
9h 47m1 stop
$249American Airlines
Find Deal
Thu, Aug 14 - Mon, Aug 18
American Airlines Logo
7:22 am - 5:38 pmDEN-SDF
8h 16m1 stop
American Airlines Logo
6:44 am - 4:42 pmSDF-DEN
11h 58m1 stop
$267American Airlines
Find Deal
Wed, Jul 16 - Sat, Jul 19
United Airlines Logo
5:58 pm - 10:45 pmDEN-SDF
2h 47mnonstop
United Airlines Logo
3:25 pm - 4:25 pmSDF-DEN
3h 00mnonstop
$317United Airlines
Find Deal
Wed, Jul 16 - Sat, Jul 19
United Airlines Logo
2:44 pm - 10:14 pmDEN-SDF
5h 30m1 stop
United Airlines Logo
3:25 pm - 4:25 pmSDF-DEN
3h 00mnonstop
$327United Airlines
Find Deal
Fri, Aug 1 - Fri, Aug 8
 Logo
6:44 pm - 7:28 pmDEN-SDF
22h 44m2 stops
 Logo
12:16 pm - 7:16 amSDF-DEN
21h 00m2 stops
Sat, Jul 26 - Tue, Jul 29
Southwest Logo
6:40 pm - 11:10 pmDEN-SDF
2h 30mnonstop
Southwest Logo
6:30 am - 10:40 amSDF-DEN
6h 10m2 stops
$332Southwest
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Tue, Jul 15 - Tue, Jul 22
Delta Logo
12:55 am - 9:49 amDEN-SDF
6h 54m1 stop
Delta Logo
6:00 am - 11:04 amSDF-DEN
7h 04m1 stop
$337Delta
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Thu, Aug 14 - Sun, Aug 17
 Logo
9:51 am - 10:08 amDEN-SDF
22h 17m2 stops
 Logo
7:35 pm - 4:26 pmSDF-DEN
22h 51m2 stops
Tue, Jul 15 - Tue, Jul 22
Southwest Logo
5:25 pm - 9:55 pmDEN-SDF
2h 30mnonstop
Southwest Logo
5:40 am - 6:30 amSDF-DEN
2h 50mnonstop
$347Southwest
Find Deal
Tue, Aug 5 - Wed, Sep 10
Delta Logo
12:55 am - 9:49 amDEN-SDF
6h 54m1 stop
Delta Logo
7:10 am - 12:46 pmSDF-DEN
7h 36m1 stop
$367Delta
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Expert advice

Expert advice for your flight from Denver to Louisville

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


Consider Priority Boarding to ensure overhead bin space for your carry-on.

Southwest

Enjoy two free checked bags up to 50 pounds each, ideal for family travel.


Use Southwest's app for free in-flight entertainment; download before boarding for streaming access.

Read more about Southwestby Blane Bachelor
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

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.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

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.

Read more
Useful Info

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 Sunday is the most expensive. Flying from Louisville back to Denver, the best deals are generally found on Tuesday, with Monday 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 August, where tickets cost $367 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $617 and $491 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $440 on average.

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. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonJanuary
High seasonSeptember
Cheapest flight$130
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 8% lower on average.
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 $130 for a one-way ticket and $249 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?

    Only Alaska Airlines offers 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?

    Star Alliance is the only airline alliance operating flights between Denver and Louisville.

  • 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 $428 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 8.0.

  • 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 $188 or less one-way and $358 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

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Tuesday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Wednesday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Thursday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Friday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Saturday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Sunday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

See more direct flights

Direct returns

Louisville Intl to Denver Intl

Monday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Tuesday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Wednesday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Thursday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Friday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Saturday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

Sunday

Air Canada, Southwest, United Airlines

Air Canada, Southwest, +1 more

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 4280 reviews
8.0Comfort
8.2Boarding
7.1Food
8.6Crew
7.6Entertainment
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

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

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

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

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