CA $290 Cheap Flights from Denver (DEN) to Louisville (SDF)

You can find one-way and return flights from DEN to SDF with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when DEN to SDF ticket fares go up or down.

August is typically the cheapest month to fly from Denver International Airport (DEN) to Louisville International Airport (SDF), with average return fares around CA$537. August often sees lower prices as it falls outside of peak summer travel for many, and before the holiday season, when demand tends to decrease. Other budget-friendly months to consider for this route include June and September.

There are 2 airlines offering direct flights from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.). Here are the carriers:
* United operates 16 direct flights from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) every week.
* Southwest Airlines operates 7 direct flights from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) every week.

United is one of the cheapest airlines offering nonstop return flights from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.), with tickets starting from around CA$200 for flights that can be booked for departure within the next year. For connecting flights, American Airlines is one of the cheapest, with return tickets starting from about CA$534. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Southwest Airlines offers the most daily flights from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The cheapest months to fly from Denver (DEN) to Louisville (SDF) are typically August and June, with average return flights around CA$537. These months can offer a good balance of more affordable fares, allowing you to save on your trip.

You'll find approximately 3 nonstop flights per day from Denver Intl. (DEN) to Louisville Intl. (SDF). For even more choices, look at flights that include layovers, as there are around 122 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Dallas-Fort Worth Intl. (DFW).

The earliest flight from Denver International Airport (DEN) to Louisville International Airport (SDF) typically departs around 12:20 AM local time. This flight is operated by Delta and is a seasonal service, active in January and December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Denver International Airport (DEN) to Louisville International Airport (SDF) on a Friday, with around 71 flights available. This gives you a good selection of options if you're planning to travel at the end of the week. Major airlines on this route include Southwest Airlines, United, and American Airlines. Flight options on Fridays are notably more plentiful compared to other days of the week, offering you greater flexibility.

The most popular departure times for flights from Denver Intl. (DEN) to Louisville Intl. (SDF) are between 9am and 12pm. Many major carriers, including United, American Airlines and Southwest Airlines, offer flights during this window. Many travellers prefer these morning flights as they allow you to arrive at your destination with plenty of time to settle in or start your day.

A nonstop flight from Denver International Airport (DEN) to Louisville International Airport (SDF) typically takes around 2 hours 48 minutes. This route covers a distance of approximately 1,643 kilometers (1,021 miles). If you opt for a one-stop flight, your travel time will be longer, usually around 6 hours 30 minutes. Flights with two or more stops take even longer, averaging about 8 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.

Yes, you can fly business class or first class between DEN and SDF. You can fly business class with Delta.

First class cabins are available on United, Delta, and American Airlines.

It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Louisville from Denver Intl. (DEN), you can fly directly into Louisville Intl. (SDF). Some flights may connect through major hubs like Eppley Field (OMA), Love Field (DAL), or Kansas City Intl. (MCI) before reaching Louisville. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) 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. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Denver, CO (DEN-Denver Intl.) to Louisville, KY (SDF-Louisville Intl.) 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 ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.