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

View $233 flight on Fri, May 15, 2026Opens in a new window

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

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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 $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Dec 5 - Tue, Dec 9
SDF
Louisville
DLH
Duluth
$238 Roundtrip, found 2 days ago
$238
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Dec 5 from Louisville to Duluth, returning Tue, Dec 9, priced at $238 found 2 days ago
United
Fri, Dec 5 - Tue, Dec 9
SDF
Louisville
DLH
Duluth
$238 Roundtrip, found 2 days ago
$238
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 5 from Louisville to Duluth, returning Tue, Dec 9, priced at $238 found 2 days ago
United
Mon, Nov 10 - Mon, Nov 17
SDF
Louisville
DLH
Duluth
$243 Roundtrip, found 4 days ago
$243
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 10 from Louisville to Duluth, returning Mon, Nov 17, priced at $243 found 4 days ago
Delta
Mon, Nov 10 - Tue, Nov 18
SDF
Louisville
DLH
Duluth
$253 Roundtrip, found 4 days ago
$253
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Nov 10 from Louisville to Duluth, returning Tue, Nov 18, priced at $253 found 4 days ago
Delta
Mon, Nov 10 - Wed, Nov 19
SDF
Louisville
DLH
Duluth
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Nov 10 from Louisville to Duluth, returning Wed, Nov 19, priced at $259 found 4 days ago
Delta
Mon, Nov 10 - Sat, Nov 15
SDF
Louisville
DLH
Duluth
$268 Roundtrip, found 4 days ago
$268
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Nov 10 from Louisville to Duluth, returning Sat, Nov 15, priced at $268 found 4 days ago
Delta
Sat, Nov 8 - Tue, Nov 18
SDF
Louisville
DLH
Duluth
$273 Roundtrip, found 4 days ago
$273
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Nov 8 from Louisville to Duluth, returning Tue, Nov 18, priced at $273 found 4 days ago
United
Wed, Nov 5 - Mon, Nov 10
SDF
Louisville
DLH
Duluth
$278 Roundtrip, found 4 days ago
$278
Roundtrip
found 4 days ago
Select United flight, departing Wed, Nov 5 from Louisville to Duluth, returning Mon, Nov 10, priced at $278 found 4 days ago
Delta
Sat, Nov 1 - Wed, Nov 12
SDF
Louisville
DLH
Duluth
$283 Roundtrip, found 5 days ago
$283
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 1 from Louisville to Duluth, returning Wed, Nov 12, priced at $283 found 5 days ago
Delta
Sat, Nov 8 - Mon, Nov 10
SDF
Louisville
DLH
Duluth
$288 Roundtrip, found 4 days ago
$288
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Nov 8 from Louisville to Duluth, returning Mon, Nov 10, priced at $288 found 4 days ago

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 $238 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 December 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.

Travel information

Origin airport
Louisville Intl.
Destination airport
Duluth Intl.
Roundtrip price
$238
Distance
681 mi

Book with confidence

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 December. 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.

 

Louisville to Duluth Flights

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*Available to One Key members.