DEN - SDF

$147 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 8/25. 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
$293
Typical prices: $581-$352
United Airlines
Wed 10/28Wed 11/4
DEN - SDF • Non-stop
Cheapest non-stop
$297
Typical prices: $568-$471
United Airlines
Wed 7/8Wed 7/15
DEN - SDF • Non-stop
Top airlines
Cheapest • from $297 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Southwest and United Airlines. Average duration is 2h 41m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $266 (round-trip)
Shortest trip • 5h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 55% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
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

Wed, Oct 28 - Wed, Nov 4
United Airlines Logo
9:55 am - 2:27 pm
DEN
-
SDF
2h 32mnonstop
United Airlines Logo
9:00 am - 9:59 am
SDF
-
DEN
2h 59mnonstop
$293United Airlines
Wed, Jul 8 - Wed, Jul 15
United Airlines Logo
6:08 pm - 10:59 pm
DEN
-
SDF
2h 51mnonstop
United Airlines Logo
8:00 am - 8:59 am
SDF
-
DEN
2h 59mnonstop
$297United Airlines
Wed, Oct 28 - Wed, Nov 4
United Airlines Logo
9:55 am - 2:27 pm
DEN
-
SDF
2h 32mnonstop
United Airlines Logo
5:35 am - 8:55 am
SDF
-
DEN
5h 20m
1 stop
$303United Airlines
Tue, Jul 28 - Wed, Aug 5
Southwest Logo
10:25 am - 10:35 pm
DEN
-
SDF
10h 10m
1 stop
Southwest Logo
12:10 pm - 12:55 pm
SDF
-
DEN
2h 45mnonstop
$305Southwest
Wed, Jul 8 - Tue, Jul 14
United Airlines Logo
6:08 pm - 10:59 pm
DEN
-
SDF
2h 51mnonstop
United Airlines Logo
3:25 pm - 4:24 pm
SDF
-
DEN
2h 59mnonstop
$306United Airlines
Wed, Jul 1 - Wed, Jul 8
Southwest Logo
7:40 pm - 12:15 am
DEN
-
SDF
2h 35mnonstop
Southwest Logo
6:05 am - 9:45 am
SDF
-
DEN
5h 40m
1 stop
$307Southwest
Thu, Aug 6 - Mon, Aug 10
Multiple Airlines Logo
11:59 pm - 2:28 pm
DEN
-
SDF
12h 29m
1 stop
Multiple Airlines Logo
9:10 pm - 8:03 pm
SDF
-
DEN
24h 53m
2 stops
$308Multiple Airlines
Tue, Oct 13 - Sat, Oct 24
United Airlines Logo
5:48 pm - 10:30 pm
DEN
-
SDF
2h 42mnonstop
United Airlines Logo
7:55 am - 8:53 am
SDF
-
DEN
2h 58mnonstop
$309United Airlines
Tue, Jul 28 - Wed, Aug 5
Southwest Logo
12:20 pm - 8:30 pm
DEN
-
SDF
6h 10m
2 stops
Southwest Logo
12:10 pm - 12:55 pm
SDF
-
DEN
2h 45mnonstop
$310Southwest
Tue, Aug 25 - Wed, Aug 26
Delta Logo
6:00 am - 2:18 pm
DEN
-
SDF
6h 18m
1 stop
Delta Logo
5:25 pm - 10:48 pm
SDF
-
DEN
7h 23m
1 stop
$311Delta
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.

How much is a round-trip flight from Denver to Louisville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Louisville departing in October.

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 Wednesday, 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 $377 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $549 and $518 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 $484, 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 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 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$147
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 2% 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 5 days, the lowest price for a flight from Denver to Louisville was $147 for a one-way ticket and $297 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 $482 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $403 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 $148 or less one-way and $393 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.
7.9
SouthwestOverall score based on 4235 reviews
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

Two hours delay, probably one hour because they didn’t bring catering and they had to bring water in board. There a change of aircraft. But delays galore at CLT so it must be a CLT and/or AA operation issue. The 1 hr additional delays because nobody could bring 2 packs of water sooner is probably the best example of this airline operates

Flight was delayed 5 hours. Initial reason for delay was 'maintenance' - which makes sense. Then, the additional 2 hours continued to say it was maintenance - when I know EWR had a 2 hour delay. AA did not say that. Additionally, when boarding, there was only one agent at the counter for a long time - until another came to help. After boarding, we had to wait another 45 minutes due to 'no catering'. So while we waited for catering, AA continued to board additional passengers - which seemed odd - and raised questions about what really was going on. I sat in First Class. During the flight, the flight crew allowed a significant number of non-First Class passengers to use the front bathroom - which created a very crowded environment in First Class which was uncomfortable. This also delayed First Class passengers from using the bathroom. Overall, horrible experience.

The Charleston, WV airport was cute. Very good staff and small enough to feel comfortable. The plane had more leg room than bigger planes. Much more comfortable.

Another uncoordinated American experience. Always surprises me at DFW for them of all places. Have to take this flight as there are no other good time options. We knew from the start that something was wrong, but the pilot wouldn't tell us. I just watched my Kayak app grow the delay by 10 minutes as it went to 3.5 hours. They were uncoordinated with maintenance (as maintenance, when finally arriving, knew within 15 minutes the plane wasn't going. No 'sorry' or 'this is what is going on' comment. The pilot seemed unfazed / didn't care about the process we were going through.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

The gate experience at LAX was abysmal (same for the arrival experience two days prior). Despite the LAX -> SAT schedule of two flights daily, our departure gate was at a smaller hub that we had to be bussed to from Terminal 4. Fortunately, I arrived at LAX extra early and had time to spare, but if I had not known, I might have missed my flight. I looked at the LAX airport map in the AA app and there was no indication of the additional boarding process. Lastly the gate area we were bussed to was crowded with limited food and beverage options. On flight, the fight attendant was hospitable and attentive, the flight was smooth, and AA's free (and working) wifi for AA members were all on the positive side.

It was so much better than expected, Ohare is not such a pleasant experience but American Airlines with the new, clean aeroplane and free Wi-Fi was outstanding and the crew so pleasant and helpful.

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

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

Information on your arrival and departure airports