DEN - SDF

$86 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 1/7. 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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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, Jan 11 - Wed, Jan 14
Multiple Airlines Logo
10:37 pm - 4:15 pmDEN-SDF
15h 38m1 stop
Multiple Airlines Logo
6:00 am - 8:33 pmSDF-DEN
16h 33m2 stops
$216Multiple Airlines
Find Deal
Sat, Jan 10 - Tue, Jan 13
Multiple Airlines Logo
2:35 pm - 4:15 pmDEN-SDF
23h 40m1 stop
Multiple Airlines Logo
6:00 am - 8:33 pmSDF-DEN
16h 33m2 stops
$220Multiple Airlines
Find Deal
Thu, Jan 1 - Mon, Jan 5
American Airlines Logo
6:44 am - 5:19 pmDEN-SDF
8h 35m1 stop
American Airlines Logo
2:00 pm - 10:26 pmSDF-DEN
10h 26m1 stop
$243American Airlines
Find Deal
Tue, Feb 24 - Thu, Feb 26
Multiple Airlines Logo
10:00 am - 9:54 amDEN-SDF
21h 54m2 stops
Multiple Airlines Logo
5:20 pm - 10:56 pmSDF-DEN
7h 36m1 stop
$258Multiple Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
Multiple Airlines Logo
7:00 am - 10:31 amDEN-SDF
25h 31m2 stops
Multiple Airlines Logo
9:43 am - 10:12 amSDF-DEN
26h 29m1 stop
$268Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
11:00 pm - 3:36 pmDEN-SDF
14h 36m1 stop
Multiple Airlines Logo
9:43 am - 10:12 amSDF-DEN
26h 29m1 stop
$269Multiple Airlines
Find Deal
Fri, Jan 16 - Mon, Jan 19
American Airlines Logo
4:30 pm - 12:26 pmDEN-SDF
17h 56m1 stop
American Airlines Logo
7:13 pm - 10:49 amSDF-DEN
17h 36m1 stop
$272American Airlines
Find Deal
Thu, Jan 1 - Mon, Jan 5
Southwest Logo
5:05 pm - 9:30 pmDEN-SDF
2h 25mnonstop
Southwest Logo
5:30 pm - 6:25 pmSDF-DEN
2h 55mnonstop
$365Southwest
Find Deal
Mon, Dec 8 - Thu, Dec 11
Delta Logo
12:50 am - 9:50 amDEN-SDF
7h 00m1 stop
Delta Logo
6:35 am - 10:07 amSDF-DEN
5h 32m1 stop
$375Delta
Find Deal
Thu, Dec 4 - Mon, Dec 8
Southwest Logo
8:15 am - 5:10 pmDEN-SDF
6h 55m2 stops
Southwest Logo
6:45 am - 11:20 amSDF-DEN
6h 35m1 stop
$380Southwest
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
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 $243 (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 58% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 14% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$216
Overall average: $475
Multiple Airlines
Sun 1/11Wed 1/14
DEN - SDF • 1 stop
Cheapest non-stop
$355
Typical prices: $427-$606
Southwest
Thu 12/4Mon 12/8
DEN - SDF • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
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 August, where tickets cost $401 (return) on average. On the other hand, the most expensive months are April and November, where the average cost of round-trip tickets is $617 and $498 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 $447, 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 58% 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

 
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

Southwest offers free carry-on and personal item, but checked bags now incur fees.


Southwest's cancellation policy allows changes up to 10 minutes before departure for travel credit or refund.

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

Good to know

Low seasonJanuary
Cheapest flight$89
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 5% 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 $89 for a one-way ticket and $216 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 A320-100/200 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 $443 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 $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 $269 or less one-way and $403 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 4241 reviews
7.0Food
8.6Crew
7.5Entertainment
8.1Boarding
8.0Comfort
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

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

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

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

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

Information on your arrival and departure airports

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