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$313+ Cheap flights from Duluth to Louisville (DLH - SDF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — SDF
oct. 25 — nov. 11
sáb. 10/25
sáb. 11/1
1 adult, Economy
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Cheap flight deals from Duluth to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Duluth (DLH) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$528
(Delta)

Popular in

May

Cheapest in

January

Average price

$303
Provider with most accurate pricing for Duluth Intl-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Duluth Intl-Louisville Intl flights.
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From Duluth Intl to Louisville Intl
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Highest demand for flights based on searches. 36% potential increase in price ($278 potential increase over avg. RT price).
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Cheapest flight prices on average. 20% potential price decrease ($83 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Duluth to Louisville

Cheapest flights from Duluth to Louisville
Explore the most affordable flight options available from Duluth to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 25, 2025.

This Delta deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/277:50 amDLH - SDF
1 stop6h 56mDelta
mié. 10/16:00 amSDF - DLH
1 stop5h 07mDelta
Deal found 9/24$313
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/224:10 pmDLH - SDF
2 stops6h 49mDelta
lun. 12/297:40 amSDF - DLH
2 stops8h 50mDelta
Deal found 9/25$528
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/233:03 pmDLH - SDF
1 stop21h 10mUnited Airlines
mar. 12/306:11 pmSDF - DLH
1 stop5h 44mUnited Airlines
Deal found 9/23$541
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/234:10 pmDLH - SDF
1 stop5h 54mDelta
lun. 12/297:40 amSDF - DLH
2 stops8h 50mDelta
Deal found 9/25$574
This Delta deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/235:00 amDLH - SDF
2 stops7h 39mDelta
mar. 12/306:50 amSDF - DLH
1 stop5h 25mDelta
Deal found 9/23$603
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/233:03 pmDLH - SDF
1 stop21h 10mUnited Airlines
lun. 12/299:05 amSDF - DLH
1 stop6h 23mUnited Airlines
Deal found 9/23$611
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/223:03 pmDLH - SDF
1 stop6h 27mUnited Airlines
lun. 12/299:05 amSDF - DLH
1 stop6h 23mUnited Airlines
Deal found 9/23$662

Cheapflights Fare Finder

 
Customize your flight search to find flights from Duluth to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 25, 2025.
Use the filters below to find and compare flights from Duluth to Louisville that are best for you.

Fly from

Duluth

Fly to

Louisville

Route

Depart

Return

Price

DuluthLouisville

DLH - SDF

DLHSDF

Duluth Intl

lun. 12/22

5:00 am-1:39 pm

2 stops7h 39m

Louisville Intl

lun. 12/29

7:40 am-3:30 pm

2 stops8h 50m

$528

DuluthLouisville

DLH - SDF

DLHSDF

Duluth Intl

mar. 12/23

3:03 pm-1:13 pm

1 stop21h 10m

Louisville Intl

mar. 12/30

6:11 pm-10:55 pm

1 stop5h 44m

$541

DuluthLouisville

DLH - SDF

DLHSDF

Duluth Intl

mar. 12/23

4:10 pm-11:04 pm

1 stop5h 54m

Louisville Intl

lun. 12/29

7:40 am-3:30 pm

2 stops8h 50m

$574

DuluthLouisville

DLH - SDF

DLHSDF

Duluth Intl

mar. 12/23

5:00 am-1:39 pm

2 stops7h 39m

Louisville Intl

mar. 12/30

6:50 am-11:15 am

1 stop5h 25m

$603

DuluthLouisville

DLH - SDF

DLHSDF

Duluth Intl

mar. 12/23

3:03 pm-1:13 pm

1 stop21h 10m

Louisville Intl

lun. 12/29

9:05 am-2:28 pm

1 stop6h 23m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/23

Compare providers for flights from Duluth to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Duluth to Louisville in September.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Duluth-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Duluth-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Duluth-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Duluth-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Duluth-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Duluth to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Duluth with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Duluth to Louisville?

Currently, January is the cheapest month in which you can book a flight from Duluth to Louisville (average of $299). Flying from Duluth to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated septiembre 25, 2025.
Read through reviews of airlines operating flights from Duluth to Louisville, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Duluth to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Duluth to Louisville?

    For as low as $528, Delta can have you in Louisville from Duluth in 7h 39m. Duluth and Louisville are separated by a distance of 682 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Duluth to Louisville round-trip?

    Currently priced at $238, Delta will fly you from Duluth to Louisville and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Users have found that Delta is 51% cheaper than the other options available to this destination.

  • Can I find deals for flights from Duluth to Louisville that include hotel bookings?

    Yes. In addition to deals on Duluth to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Duluth to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duluth to Louisville.

  • Can I find deals for business class flights from Duluth to Louisville?

    Yes. Cheapflights offers flight deals from Duluth to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Duluth to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Duluth to Louisville (average of $299). Flying from Duluth to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Top airline flying from Duluth to Louisville

Discover the top airline that operate flights from Duluth to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$238Average$433FlexibilityNo cancel feeOn-timeN/A

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