SDF - DEN

$112 Find Cheap Flights from Louisville to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Denver departing on 4/20. 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 Denver

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

Cheapest round-trip
$211
Overall average: $384
American Airlines
Wed 4/15Sat 4/18
SDF - DEN • 1 stop
Cheapest non-stop
$317
Typical prices: $340-$493
United Airlines
Tue 3/10Tue 3/17
SDF - DEN • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus adds six inches of legroom.
Southwest allows two free checked bags up to 50 lbs.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
American Airlines
Cheapest • from $211 (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 56% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 10% price drop
July
Most popular
Good to know
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+1
+1
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Flight Deals

Cheap Flights from Louisville to Denver (SDF-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Denver 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 Louisville to Denver

Wed, Apr 15 - Sat, Apr 18
American Airlines Logo
5:38 pm - 11:45 pm
SDF
-
DEN
8h 07m
1 stop
American Airlines Logo
10:37 am - 6:30 pm
DEN
-
SDF
5h 53m
1 stop
$211American Airlines
Mon, May 11 - Fri, May 15
Multiple Airlines Logo
7:48 pm - 12:09 pm
SDF
-
DEN
18h 21m
2 stops
Multiple Airlines Logo
3:45 pm - 8:36 am
DEN
-
SDF
14h 51m
1 stop
$239Multiple Airlines
Fri, Apr 10 - Tue, Apr 14
Multiple Airlines Logo
7:48 pm - 9:09 pm
SDF
-
DEN
27h 21m
2 stops
Multiple Airlines Logo
11:59 pm - 11:38 am
DEN
-
SDF
9h 39m
1 stop
$241Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
12:33 pm - 2:32 pm
SDF
-
DEN
27h 59m
1 stop
Multiple Airlines Logo
9:00 pm - 7:36 pm
DEN
-
SDF
20h 36m
2 stops
$265Multiple Airlines
Fri, Apr 24 - Sun, Apr 26
Multiple Airlines Logo
12:33 pm - 2:32 pm
SDF
-
DEN
27h 59m
1 stop
Multiple Airlines Logo
11:59 pm - 11:38 am
DEN
-
SDF
9h 39m
1 stop
$268Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
2:26 pm - 12:09 am
SDF
-
DEN
11h 43m
1 stop
Multiple Airlines Logo
9:00 pm - 2:38 pm
DEN
-
SDF
15h 38m
2 stops
$270Multiple Airlines
Thu, May 7 - Mon, May 11
Multiple Airlines Logo
9:14 pm - 8:55 am
SDF
-
DEN
13h 41m
1 stop
Multiple Airlines Logo
9:00 pm - 2:38 pm
DEN
-
SDF
15h 38m
2 stops
$279Multiple Airlines
Fri, Apr 24 - Sun, Apr 26
Multiple Airlines Logo
12:33 pm - 12:09 pm
SDF
-
DEN
25h 36m
2 stops
Multiple Airlines Logo
11:59 pm - 11:38 am
DEN
-
SDF
9h 39m
1 stop
$282Multiple Airlines
Fri, Apr 10 - Wed, Apr 15
Multiple Airlines Logo
7:48 pm - 9:09 pm
SDF
-
DEN
27h 21m
2 stops
Multiple Airlines Logo
11:40 am - 1:26 pm
DEN
-
SDF
23h 46m
1 stop
$288Multiple Airlines
Mon, Apr 13 - Wed, Apr 15
Multiple Airlines Logo
12:09 pm - 9:27 am
SDF
-
DEN
23h 18m
2 stops
Multiple Airlines Logo
11:40 am - 1:26 pm
DEN
-
SDF
23h 46m
1 stop
$289Multiple Airlines
Booking Insights

KAYAK's insights & trends for Louisville to Denver flights

Get data-powered insights and trends into flights from Louisville to Denver 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 Louisville to Denver?

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

Your flight ticket price will generally be cheaper if you fly to Denver on a Tuesday and more expensive on a Sunday. On your return trip to Louisville, you should consider flying back on a Saturday, and avoid Mondays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to Denver, 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 Louisville to Denver is April, where tickets cost $384 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $498 and $464 respectively.

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

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 Louisville to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Louisville to Denver, 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 Louisville to Denver, you should book around 4 weeks before departure, which saves you about 56% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Louisville to Denver

 
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$112
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Louisville to Denver

When to book flights from Louisville to Denver

Are your dates flexible? Find out the best times to travel from Louisville to Denver 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 Louisville to Denver

  • Are there wheelchair accessible services in Louisville International Airport?

    There are wheelchair accessible services in Louisville International Airport. The airport has an Americans with Disabilities Act (ADA) coordinator who is responsible for ensuring that all airport facilities, services, and programs are accessible to people with disabilities.

  • Are there pet relief areas at Denver International Airport?

    Yes, there are pet relief areas at Denver International Airport. There are three options for pet relief areas: indoor, outdoor, and on-leash. The indoor pet relief area is located in the main terminal on the west side of the building near the baggage claim area. The outdoor pet relief area is located on the north side of the building near the parking garage. The on-leash pet relief area is located on the south side of the building near the employee parking lot.

  • Are there lounges in Denver International Airport?

    The various options are as follows. The United Club is located in Concourse C near Gate C37. It offers a variety of amenities including complimentary snacks and beverages, Wi-Fi, TV, and more. The American Airlines Admirals Club is located in Concourse B near Gate B50. The Delta Sky Club is located in Concourse A near Gate A21. It offers a variety of amenities including complimentary snacks and beverages, Wi-Fi, TV, and more.

  • How do you get from the Denver International Airport to the city center?

    The best way to get from the Denver International Airport (DEN) to the city center is by taking the A Line train. The A Line runs every 15min and takes about 37min to reach Denver Union Station. Other options include taking a bus or taxi, but these are generally more expensive and take longer.

  • What is the cheapest flight from Louisville to Denver?

    In the last 3 days, the lowest price for a flight from Louisville to Denver was $112 for a one-way ticket and $211 for a round-trip.

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

    No, a passport isn't needed to fly from Louisville to Denver. However, local authorities might ask for an official ID.

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

    Louisville airport is called Louisville Intl and the only airport in Denver is Denver Intl.

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

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

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

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

  • Which airline alliances offer flights from Louisville to Denver?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Louisville to Denver are Southwest and Delta. With an average price for the route of $422 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 Louisville to Denver?

    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 Louisville to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Louisville 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 Louisville to Denver?

    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 Denver with an airline and back to Louisville with another airline. Booking your flights between Louisville and DEN 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 Louisville to Denver?

    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 Denver from Louisville 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 Louisville to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $223 or less one-way and $404 or less round-trip.
  • There are a variety of services and amenities that are available for passengers in Strandiford Field International Airport Louisville (SDF). These include restaurants, shops, and other amenities.
  • There are a few options for getting from the city center to Louisville International Airport in Kentucky. You could take a bus, taxi, or ride-sharing service like Uber or Lyft. You could also rent a car, but this may be more expensive than the other options. If you are flying into Louisville, you may be able to find a hotel that offers a shuttle service to and from the airport.
  • Luggage services are available at the Louisville International Airport in Kentucky. There are a number of companies that offer a variety of services, including luggage storage, luggage shipping, and luggage repair.
  • There are car rentals available at Denver International Airport (DEN). The options include renting a car from the airport, or using a ride sharing service such as Uber or Lyft. There are also a number of car rental companies that have locations in the city center, such as Enterprise, Hertz, and Avis.
  • There are not currently any pet relief areas in Strandiford Field International Airport Louisville. However, there are a lot of pet-friendly services within the airport to ensure that your travel here is comfortable with your fluffy friend.

Prefer to fly direct from Louisville to Denver?

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

Direct departures

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

Direct returns

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

Reviews of the top 4 airlines serving from Louisville to Denver

 
See real verified KAYAK customer reviews for airlines flying from Louisville to Denver. 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 Louisville to Denver? 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 4279 reviews
8.6Crew
7.5Entertainment
8.0Comfort
8.1Boarding
7.0Food
Airline reviews

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

10.0 ExcellentAnonymous, Feb 2026
STL - DAL
Read more Southwest reviews

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

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

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

Everything was on time Will use united again for sure

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

They are always late and seats was also not having working charger

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

did not have enough meal for first class passengers so offer us snack

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

Information on your arrival and departure airports