DLH - SDF

$318 Find Cheap Flights from Duluth to Louisville

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Louisville departing on 8/28. 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

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 Duluth 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 Duluth to Louisville, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Duluth to Louisville (DLH-SDF)

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

Thu, Aug 28 - Mon, Sep 1
United Airlines Logo
9:45 am - 5:16 pmDLH-SDF
6h 31m1 stop
United Airlines Logo
5:52 pm - 10:05 pmSDF-DLH
5h 13m1 stop
$318United Airlines
Find Deal
Tue, Dec 23 - Tue, Dec 30
Delta Logo
4:00 pm - 10:53 pmDLH-SDF
5h 53m1 stop
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$428Delta
Find Deal
Sat, Aug 30 - Wed, Sep 3
United Airlines Logo
8:00 am - 1:17 pmDLH-SDF
4h 17m1 stop
United Airlines Logo
9:55 am - 10:05 pmSDF-DLH
13h 10m2 stops
$453United Airlines
Find Deal
Tue, Dec 23 - Tue, Dec 30
Delta Logo
4:00 pm - 10:53 pmDLH-SDF
5h 53m1 stop
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$488Delta
Find Deal
Thu, Aug 28 - Mon, Sep 1
United Airlines Logo
9:45 am - 5:16 pmDLH-SDF
6h 31m1 stop
United Airlines Logo
2:20 pm - 10:45 amSDF-DLH
21h 25m2 stops
$502United Airlines
Find Deal
Tue, Dec 23 - Tue, Dec 30
Delta Logo
11:55 am - 10:50 pmDLH-SDF
9h 55m2 stops
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$523Delta
Find Deal
Tue, Dec 23 - Tue, Dec 30
Delta Logo
11:55 am - 10:50 pmDLH-SDF
9h 55m2 stops
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$524Delta
Find Deal
Tue, Dec 23 - Mon, Dec 29
Delta Logo
4:00 pm - 10:53 pmDLH-SDF
5h 53m1 stop
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$528Delta
Find Deal
Tue, Dec 23 - Mon, Dec 29
Delta Logo
4:00 pm - 10:53 pmDLH-SDF
5h 53m1 stop
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$557Delta
Find Deal
Mon, Dec 22 - Mon, Dec 29
Delta Logo
11:55 am - 10:50 pmDLH-SDF
9h 55m2 stops
Delta Logo
6:36 am - 11:08 amSDF-DLH
5h 32m1 stop
$563Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Duluth to Louisville flights

Get data-powered insights and trends into flights from Duluth to Louisville to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Duluth to Louisville?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Duluth to Louisville were found on United Airlines ($318) and Delta ($428).

Good to know

Cheapest flight$318
Flight from Duluth to Louisville

When to book flights from Duluth to Louisville

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

  • What is the cheapest flight from Duluth to Louisville?

    In the last 3 days, the lowest price for a flight from Duluth to Louisville was $318 for a round-trip ticket.

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

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

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

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Duluth to Louisville?

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

  • How does KAYAK find such low prices on flights from Duluth 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 Duluth to Louisville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Duluth 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 Duluth 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 Duluth with another airline. Booking your flights between Duluth 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 Duluth 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 Duluth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Duluth to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Duluth 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 Duluth 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
DeltaOverall score based on 7982 reviews
8.2Boarding
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

8.0 ExcellentJeanne, Aug 2025MSY - JFK
Read more Delta reviews

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

I liked the friendliness of the staff. The cleanliness of all 3 planes.

Was charged for my luggage despite having been on one ticket from an international flight. Too tired to argue after 15 hours on flight. Was charged for rechecking it at JFK airport. Not sure why those off Kenya Airways were required to do that.

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

Information on your arrival and departure airports

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