$233 Cheap Flights from Louisville (SDF) to Duluth (DLH)

View $233 flight on Tue, Oct 14, 2025Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Duluth, MN (DLH-Duluth Intl.)

Cheap Flights from Louisville to Duluth (SDF-DLH)

Prices were available within the past 7 days and start at $233 for one-way flights and $248 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Sep 8 - Sat, Sep 13
SDF
Louisville
DLH
Duluth
$248 Roundtrip, found 5 days ago
$248
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Sep 8 from Louisville to Duluth, returning Sat, Sep 13, priced at $248 found 5 days ago
Delta
Fri, Sep 5 - Sat, Sep 13
SDF
Louisville
DLH
Duluth
$273 Roundtrip, found 2 days ago
$273
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Sep 5 from Louisville to Duluth, returning Sat, Sep 13, priced at $273 found 2 days ago
Delta
Mon, Sep 1 - Sat, Sep 13
SDF
Louisville
DLH
Duluth
$288 Roundtrip, found 2 days ago
$288
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 1 from Louisville to Duluth, returning Sat, Sep 13, priced at $288 found 2 days ago
Delta
Fri, Sep 5 - Sat, Sep 6
SDF
Louisville
DLH
Duluth
$298 Roundtrip, found 2 days ago
$298
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Sep 5 from Louisville to Duluth, returning Sat, Sep 6, priced at $298 found 2 days ago
Delta
Fri, Sep 12 - Sat, Sep 13
SDF
Louisville
DLH
Duluth
$308 Roundtrip, found 5 days ago
$308
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Sep 12 from Louisville to Duluth, returning Sat, Sep 13, priced at $308 found 5 days ago
Delta
Mon, Sep 1 - Sat, Sep 6
SDF
Louisville
DLH
Duluth
$313 Roundtrip, found 2 days ago
$313
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 1 from Louisville to Duluth, returning Sat, Sep 6, priced at $313 found 2 days ago
Delta
Thu, Sep 4 - Sat, Sep 13
SDF
Louisville
DLH
Duluth
$318 Roundtrip, found 2 days ago
$318
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Sep 4 from Louisville to Duluth, returning Sat, Sep 13, priced at $318 found 2 days ago
Delta
Thu, Sep 4 - Sat, Sep 6
SDF
Louisville
DLH
Duluth
$343 Roundtrip, found 2 days ago
$343
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Sep 4 from Louisville to Duluth, returning Sat, Sep 6, priced at $343 found 2 days ago
Delta
Thu, Sep 11 - Sat, Sep 13
SDF
Louisville
DLH
Duluth
$403 Roundtrip, found 5 days ago
$403
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Sep 11 from Louisville to Duluth, returning Sat, Sep 13, priced at $403 found 5 days ago
United
Fri, Sep 5 - Fri, Sep 12
SDF
Louisville
DLH
Duluth
$409 Roundtrip, found 2 days ago
$409
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 5 from Louisville to Duluth, returning Fri, Sep 12, priced at $409 found 2 days ago

Alternative airports near Duluth

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Duluth Intl. DLH. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $411
DLH
Duluth Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $411
Flights from Louisville (SDF) to Duluth (DLH)
Origin airport
Louisville Intl.
Destination airport
Duluth Intl.
Roundtrip price
$248
Distance
681 mi

Louisville to Duluth Flights

The cheapest times to fly from Louisville to Duluth

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Louisville to Duluth are during the month of September. You can find some of the cheapest flights from Louisville to Duluth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Duluth

Sunday is one of the best days to book for cheap flights from Louisville to Duluth: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Louisville to Duluth

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Louisville to Duluth in 2025. You can also book with separate airlines for your outbound and return journeys, from $233 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Louisville to Duluth flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Louisville to Duluth airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH) cost?
Snag a cheap one-way flight from $233 or cheap return flight from $248 from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH)?
Planning your trip for September is a great way to save, as it's the cheapest month for flights between SDF and DLH. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH)?
To find the cheapest airline that'll fly you from SDF to DLH, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH)?
Direct flights from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SDF to DLH?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH)?
To avoid potential delays on the Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH) route, aim to fly before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH) last-minute?
Booking your plane ticket from SDF to DLH shortly before your getaway is usually more expensive. However, if there's some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a SDF to DLH flight and hotel package?
Compared with arranging hotels and flights separately, booking a SDF to DLH flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place takes the hassle out of planning your trip. Simply pick your flights and select from our wide range of stays, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Duluth Intl. Airport (DLH)?
It's usually possible to cancel or reschedule your SDF to DLH flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.