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 2/24. 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
United Airlines
Tue 2/24Sat 2/28
DLH - SDF • 1 stop
Cheapest one-way
Multiple Airlines
Wed 2/11
DLH - SDF • multi-stop
Top airlines
United Airlines
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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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
3:19 pm - 8:09 pm
DLH
-
SDF
3h 50m
1 stop
United Airlines Logo
5:35 am - 10:43 am
SDF
-
DLH
6h 08m
1 stop
$268United Airlines
Sat, Feb 28 - Thu, Mar 5
United Airlines Logo
3:19 pm - 10:13 pm
DLH
-
SDF
5h 54m
1 stop
United Airlines Logo
7:05 am - 10:43 am
SDF
-
DLH
4h 38m
1 stop
$290United Airlines
Thu, Mar 19 - Sat, Mar 21
Delta Logo
5:00 am - 1:37 pm
DLH
-
SDF
7h 37m
2 stops
Delta Logo
6:15 am - 11:56 am
SDF
-
DLH
6h 41m
1 stop
$299Delta
Sat, Feb 28 - Thu, Mar 5
Delta Logo
12:15 pm - 9:14 pm
DLH
-
SDF
7h 59m
2 stops
Delta Logo
6:23 am - 11:30 am
SDF
-
DLH
6h 07m
1 stop
$359Delta
Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
3:08 pm - 10:30 pm
DLH
-
SDF
6h 22m
1 stop
United Airlines Logo
5:00 am - 10:29 am
SDF
-
DLH
6h 29m
1 stop
$378United Airlines
Tue, Feb 24 - Sat, Feb 28
Delta Logo
12:15 pm - 9:18 pm
DLH
-
SDF
8h 03m
2 stops
Delta Logo
6:23 am - 11:30 am
SDF
-
DLH
6h 07m
1 stop
$394Delta
Thu, Mar 19 - Sat, Mar 21
Delta Logo
8:04 am - 3:44 pm
DLH
-
SDF
6h 40m
1 stop
Delta Logo
12:34 pm - 3:52 pm
SDF
-
DLH
4h 18m
1 stop
$413Delta
Fri, Apr 10 - Sun, Apr 19
United Airlines Logo
6:42 pm - 9:25 am
DLH
-
SDF
13h 43m
1 stop
United Airlines Logo
7:20 am - 10:29 am
SDF
-
DLH
4h 09m
1 stop
$474United Airlines
Fri, Apr 10 - Sun, Apr 19
United Airlines Logo
6:42 pm - 9:25 am
DLH
-
SDF
13h 43m
1 stop
United Airlines Logo
5:00 am - 10:29 am
SDF
-
DLH
6h 29m
1 stop
$480United Airlines
Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
3:08 pm - 10:30 pm
DLH
-
SDF
6h 22m
1 stop
United Airlines Logo
9:55 am - 10:29 am
SDF
-
DLH
25h 34m
2 stops
$522United Airlines
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 ($268) and Delta ($299).

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 8180 reviews
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
8.5Crew
Airline reviews

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

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

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 you need to know for your flight from Duluth to Louisville

Information on your arrival and departure airports