$68 Cheap Flights from St. Louis (STL) to Duluth (DLH)

View $68 flight on Sun, Sep 14, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Duluth, MN (DLH-Duluth Intl.)

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Cheap Flights from St. Louis to Duluth (STL-DLH)

Prices were available within the past 7 days and start at $68 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Nov 4 - Sat, Nov 8
STL
St. Louis
DLH
Duluth
$238 Roundtrip, found 13 hours ago
$238
Roundtrip
found 13 hours ago
Select Delta flight, departing Tue, Nov 4 from St. Louis to Duluth, returning Sat, Nov 8, priced at $238 found 13 hours ago
Delta
Wed, Aug 13 - Sat, Aug 23
STL
St. Louis
DLH
Duluth
$243 Roundtrip, found 5 days ago
$243
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Aug 13 from St. Louis to Duluth, returning Sat, Aug 23, priced at $243 found 5 days ago
Delta
Mon, Aug 18 - Sat, Aug 30
STL
St. Louis
DLH
Duluth
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 18 from St. Louis to Duluth, returning Sat, Aug 30, priced at $252 found 5 days ago
Delta
Thu, Sep 18 - Tue, Sep 23
STL
St. Louis
DLH
Duluth
$261 Roundtrip, found 2 days ago
$261
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Sep 18 from St. Louis to Duluth, returning Tue, Sep 23, priced at $261 found 2 days ago
Delta
Tue, Sep 23 - Wed, Sep 24
STL
St. Louis
DLH
Duluth
$266 Roundtrip, found 2 days ago
$266
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 23 from St. Louis to Duluth, returning Wed, Sep 24, priced at $266 found 2 days ago
Delta
Tue, Aug 5 - Fri, Aug 22
STL
St. Louis
DLH
Duluth
$268 Roundtrip, found 4 days ago
$268
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Aug 5 from St. Louis to Duluth, returning Fri, Aug 22, priced at $268 found 4 days ago
Delta
Mon, Oct 13 - Tue, Oct 14
STL
St. Louis
DLH
Duluth
$275 Roundtrip, found 13 hours ago
$275
Roundtrip
found 13 hours ago
Select Delta flight, departing Mon, Oct 13 from St. Louis to Duluth, returning Tue, Oct 14, priced at $275 found 13 hours ago
Delta
Mon, Sep 8 - Thu, Sep 11
STL
St. Louis
DLH
Duluth
$284 Roundtrip, found 13 hours ago
$284
Roundtrip
found 13 hours ago
Select Delta flight, departing Mon, Sep 8 from St. Louis to Duluth, returning Thu, Sep 11, priced at $284 found 13 hours ago
Delta
Thu, Oct 9 - Tue, Oct 14
STL
St. Louis
DLH
Duluth
$287 Roundtrip, found 13 hours ago
$287
Roundtrip
found 13 hours ago
Select Delta flight, departing Thu, Oct 9 from St. Louis to Duluth, returning Tue, Oct 14, priced at $287 found 13 hours ago
United
Mon, Oct 13 - Sat, Oct 18
STL
St. Louis
DLH
Duluth
$338 Roundtrip, found 4 days ago
$338
Roundtrip
found 4 days ago
Select United flight, departing Mon, Oct 13 from St. Louis to Duluth, returning Sat, Oct 18, priced at $338 found 4 days ago

Find the cheapest month to fly from St. Louis (STL) to Duluth (DLH)

January is typically the cheapest month to fly

From $238 - $473 per traveler.

Graph displaying average flight prices per month

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 $578
DLH
Duluth Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $578
Flights from St. Louis (STL) to Duluth (DLH)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Duluth Intl.
Airlines serving
Delta, United
Roundtrip price
$238
Distance
566 mi

St. Louis to Duluth Flights

The cheapest times to fly from St. Louis 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 St. Louis to Duluth are during the month of November. You can find some of the cheapest flights from St. Louis to Duluth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Duluth

Sunday is one of the best days to book for cheap flights from St. Louis 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 St. Louis 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 St. Louis to Duluth in 2025. You can also book with separate airlines for your outbound and return journeys, from $68 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 St. Louis 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 St. Louis 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 Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH) cost?
Discover the latest flight deals from STL to DLH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to DLH?
The cheapest flights from STL to DLH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to DLH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to DLH. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH)?
There aren't any daily nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STL to DLH?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**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 Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH) last-minute?
Booking your flight from STL to DLH just before your trip is typically more expensive. However, if there's some wiggle room with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a STL to DLH flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to DLH flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place will take the hassle out of travel planning. Just pick your flights and choose from our extensive range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Duluth Intl. Airport (DLH)?
If you booked your STL to DLH flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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