DLH - SDF

$268 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 1/21. 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 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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Everything you should know

Cheapest round-trip
$268
Delta
Wed 1/21Sun 1/25
DLH - SDF • 1 stop
Cheapest one-way
Multiple Airlines
Tue 1/6
DLH - SDF • multi-stop
Top airlines
Delta
Cheapest • from $268 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Louisville!
Flight Deals
Booking Insights
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

Wed, Jan 21 - Sun, Jan 25
Delta Logo
4:24 pm - 11:06 pm
DLH
-
SDF
5h 42m1 stop
Delta Logo
6:23 am - 11:16 am
SDF
-
DLH
5h 53m1 stop
$268Delta
Wed, Jan 21 - Sun, Jan 25
Delta Logo
5:00 am - 2:36 pm
DLH
-
SDF
8h 36m2 stops
Delta Logo
6:23 am - 11:16 am
SDF
-
DLH
5h 53m1 stop
$274Delta
Fri, Apr 10 - Sun, Apr 19
Delta Logo
5:00 am - 11:51 am
DLH
-
SDF
5h 51m1 stop
Delta Logo
6:15 am - 12:06 pm
SDF
-
DLH
6h 51m1 stop
$413Delta
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
3:05 pm - 8:28 pm
DLH
-
SDF
4h 23m1 stop
United Airlines Logo
6:12 pm - 9:59 pm
SDF
-
DLH
4h 47m1 stop
$428United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
3:05 pm - 8:28 pm
DLH
-
SDF
4h 23m1 stop
United Airlines Logo
6:12 pm - 2:30 pm
SDF
-
DLH
21h 18m1 stop
$430United Airlines
Fri, Apr 10 - Sun, Apr 19
Delta Logo
5:00 am - 11:51 am
DLH
-
SDF
5h 51m1 stop
Delta Logo
6:15 am - 12:06 pm
SDF
-
DLH
6h 51m1 stop
$437Delta
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
3:05 pm - 10:30 pm
DLH
-
SDF
6h 25m1 stop
United Airlines Logo
8:29 am - 2:30 pm
SDF
-
DLH
7h 01m1 stop
$467United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
3:05 pm - 2:48 pm
DLH
-
SDF
22h 43m2 stops
United Airlines Logo
6:12 pm - 9:59 pm
SDF
-
DLH
4h 47m1 stop
$513United Airlines
Sat, Jan 31 - Tue, Feb 3
United Airlines Logo
3:05 pm - 2:48 pm
DLH
-
SDF
22h 43m2 stops
United Airlines Logo
6:12 pm - 2:30 pm
SDF
-
DLH
21h 18m1 stop
$514United Airlines
Wed, Jan 21 - Sun, Jan 25
Delta Logo
4:24 pm - 11:50 pm
DLH
-
SDF
6h 26m2 stops
Delta Logo
5:35 am - 3:44 pm
SDF
-
DLH
11h 09m2 stops
$539Delta
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 Delta ($268) and United Airlines ($428).

Which airlines fly non-stop between Duluth and Louisville?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Duluth to Louisville.

There is just one airline that flies from Duluth to Louisville direct and that is Delta. The best round-trip deal found from Delta for the route is $238.

Good to know

Cheapest flight$268
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 $268 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?

    SkyTeam is the only airline alliance operating flights between Duluth and Louisville.

  • 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.
7.9
DeltaOverall score based on 8018 reviews
8.1Boarding
8.5Crew
7.2Food
7.9Comfort
7.8Entertainment
Airline reviews

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

2.0 MediocreAnonymous, Jan 2026
EWR - ATL
Read more Delta reviews

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

The only thing nice I can say is the flight crew was really nice and apologetic about the situation. They shared as much information as they had and advised us on what we could do about missing connecting flights. The boarding process was so slow. The gate agent was working by herself and should have had someone working with her. It took almost an hour to board because she was trying to board a full flight of people and provide customer service to everyone who was flying standby and/or had questions. It was really chaotic. This didn't help the fact that we were delayed and folks were missing connections the longer it took.

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

Information on your arrival and departure airports