$124 Cheap Flights from Louisville (SDF) to Denver (DEN)

View $124 flight on Thu, Oct 2, 2025Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)

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Cheap Flights from Louisville to Denver (SDF-DEN)

Prices were available within the past 7 days and start at $124 for one-way flights and $247 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Oct 2 - Sun, Oct 5
SDF
Louisville
DEN
Denver
$247 Roundtrip, just found
$247
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Oct 2 from Louisville to Denver, returning Sun, Oct 5, priced at $247 just found
United
Mon, Sep 29 - Wed, Oct 15
SDF
Louisville
DEN
Denver
$247 Roundtrip, just found
$247
Roundtrip
just found
Select United flight, departing Mon, Sep 29 from Louisville to Denver, returning Wed, Oct 15, priced at $247 just found
American Airlines
Mon, Nov 3 - Thu, Nov 6
SDF
Louisville
DEN
Denver
$251 Roundtrip, found 2 days ago
$251
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Nov 3 from Louisville to Denver, returning Thu, Nov 6, priced at $251 found 2 days ago
American Airlines
Mon, Nov 3 - Thu, Nov 6
SDF
Louisville
DEN
Denver
$255 Roundtrip, found 2 days ago
$255
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Nov 3 from Louisville to Denver, returning Thu, Nov 6, priced at $255 found 2 days ago
Southwest Airlines
Thu, Oct 2 - Sun, Oct 5
SDF
Louisville
DEN
Denver
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Oct 2 from Louisville to Denver, returning Sun, Oct 5, priced at $257 just found
American Airlines
Wed, Oct 1 - Fri, Oct 3
SDF
Louisville
DEN
Denver
$259 Roundtrip, found 11 hours ago
$259
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Oct 1 from Louisville to Denver, returning Fri, Oct 3, priced at $259 found 11 hours ago
Delta
Mon, Sep 29 - Wed, Oct 15
SDF
Louisville
DEN
Denver
$261 Roundtrip, just found
$261
Roundtrip
just found
Select Delta flight, departing Mon, Sep 29 from Louisville to Denver, returning Wed, Oct 15, priced at $261 just found
Southwest Airlines
Wed, Nov 5 - Sat, Nov 8
SDF
Louisville
DEN
Denver
$262 Roundtrip, found 10 hours ago
$262
Roundtrip
found 10 hours ago
Select Southwest Airlines flight, departing Wed, Nov 5 from Louisville to Denver, returning Sat, Nov 8, priced at $262 found 10 hours ago
Southwest Airlines
Wed, Nov 12 - Wed, Nov 19
SDF
Louisville
DEN
Denver
$267 Roundtrip, found 14 hours ago
$267
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Wed, Nov 12 from Louisville to Denver, returning Wed, Nov 19, priced at $267 found 14 hours ago
Sun Country Airlines
Thu, Sep 11 - Sun, Sep 14
SDF
Louisville
DEN
Denver
$427 Roundtrip, found 11 hours ago
$427
Roundtrip
found 11 hours ago
Select Sun Country Airlines flight, departing Thu, Sep 11 from Louisville to Denver, returning Sun, Sep 14, priced at $427 found 11 hours ago

Find the cheapest month to fly from Louisville (SDF) to Denver (DEN)

November is typically the cheapest month to fly

From $139 - $493 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $390
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $390
0
Flights from Louisville (SDF) to Denver (DEN)
Origin airport
Louisville Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$247
Distance
1020 mi

Louisville to Denver Flights

The cheapest times to fly from Louisville to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Louisville to Denver are during the month of October. You can find some of the cheapest flights from Louisville to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Denver

Sunday is one of the best days to book for cheap flights from Louisville to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Louisville to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Louisville to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $124 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Louisville to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Louisville to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN) cost?
Lock in a cheap one-way flight from $124 or cheap return flight from $247 from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
Flying in October may help you find better deals, as it's the cheapest month for flights between SDF and DEN. You'll typically find the lowest prices during the off-season.
Which airlines fly direct from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
When heading out of Louisville Intl. Airport (SDF), you can catch a direct flight to Denver Intl. Airport (DEN) with United Airlines.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
The cheapest airline to offer flights between Louisville Intl. Airport (SDF) and Denver Intl. Airport (DEN) can change depending on when you want to travel. Southwest Airlines and United Airlines are just some of the choices offering reasonable prices. Use Expedia's filters to compare airlines in one place and find the right SDF to DEN flight for your budget.
How many flights per day from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
When flying out of Louisville Intl. Airport (SDF), you'll have your pick from an average of 2 daily nonstop flights to Denver Intl. Airport (DEN).
What are the most popular departure times for flights from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
Flights between SDF and DEN are busiest at 9 AM. If you'd like a more relaxed experience and potentially cheaper tickets, look for a time when demand is lower.
What day of the week has the most flights from SDF to DEN?
Friday has the most flights from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN). Consider taking off on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
Louisville Intl. Airport (SDF)'s earliest flight to Denver Intl. Airport (DEN) is at approximately 6:35AM UTC-5. With a total journey time of 3h 10m, you'll touch down at around 7:45AM UTC-7.
How long does it take to fly from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
Flights from SDF to DEN have an average travel time of 3 hours and 11 minutes. The total distance between these two airports is 1,000 mi.
What is the best time to fly from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
Opt for a flight from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Louisville Intl. Airport (SDF)?
Browse your flight options from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN). This is the only Denver airport you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN) last-minute?
Holding off until just before your departure to book a ticket from SDF to DEN generally means paying more. Although you may find some last-minute offers, there's no guarantee. Keep your travel schedule open to maximize your chances of landing a bargain.
Is it cheaper to book a SDF to DEN flight and hotel package?
Opting for a SDF to DEN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our extensive range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Denver Intl. Airport (DEN)?
If you reserved your SDF to DEN flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.