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$422+ Cheap flights from Louisville to Duluth (SDF - DLH)

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — DLH
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Louisville to Duluth

Cheapest flights from Louisville to Duluth
Explore the most affordable flight options available from Louisville to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/262:00 pmSDF - DLH
1 stop9h 55mUnited Airlines
Tue 12/303:03 pmDLH - SDF
1 stop4h 29mUnited Airlines
Deal found 12/11$961

Find flight deals from Louisville to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Duluth (DLH). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$422
(United Airlines)
Provider with most accurate pricing for Louisville Intl-Duluth Intl flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Duluth Intl flights.
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From Louisville Intl to Duluth Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Duluth 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 December 12, 2025.
Use the filters below to find and compare flights from Louisville to Duluth that are best for you.

Fly from

Louisville

Fly to

Duluth

Route

Depart

Return

Price

LouisvilleDuluth

SDF - DLH

SDFDLH

Louisville Intl

Sat 1/24

8:29 am-2:30 pm

1 stop7h 01m

Duluth Intl

Wed 1/28

7:40 am-1:24 pm

1 stop4h 44m

$422

LouisvilleDuluth

SDF - DLH

SDFDLH

Louisville Intl

Fri 12/26

2:00 pm-10:55 pm

1 stop9h 55m

Duluth Intl

Tue 12/30

3:03 pm-8:32 pm

1 stop4h 29m

$961

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Compare providers for flights from Louisville to Duluth

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 Louisville to Duluth in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Louisville-Duluth flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Louisville-Duluth flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Louisville-Duluth flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Duluth flights, Cheapflights users trust eDreams the most. eDreams 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 Louisville-Duluth 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 Louisville to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Louisville 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 Louisville to Duluth

What is the cheapest time of day to fly from SDF to DLH?

Find hourly flight availability from Louisville to Duluth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from Louisville to Duluth in the morning. Doing so could potentially save you 73% on the flight price compared to flying in the evening, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Duluth. 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 Louisville to Duluth?

    Departing from Louisville to Duluth will take you 7h 01m. There are 682 mi between Louisville and Duluth.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior

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