STL - DLH

$143 Find Cheap Flights from St. Louis to Duluth - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Duluth departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Duluth

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Duluth, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Duluth, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$298
Typical prices: $238-$378
Delta
Mon 11/23Fri 11/27
STL - DLH • 1 stop
Cheapest one-way
$143
Delta
Wed 10/7
STL - DLH • 1 stop
Top airlines
Delta
Cheapest • from $298 (round-trip)
Delta
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Duluth. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Minneapolis (MSP)
Cheapest • Avg $429 (round-trip)
Minneapolis (MSP)
Shortest trip • 4h 04m (one-way)
Insights
Insights
Insights
Insights
When to travel
December
Cheapest • 100% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Duluth!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Duluth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Duluth

Mon, Nov 23 - Fri, Nov 27
Delta Logo
9:45 am - 3:44 pm
STL
-
DLH
5h 59m
1 stop
Delta Logo
8:05 am - 2:31 pm
DLH
-
STL
6h 26m
1 stop
$298Delta
Wed, Jul 8 - Tue, Jul 14
United Airlines Logo
6:00 am - 10:41 am
STL
-
DLH
4h 41m
1 stop
United Airlines Logo
6:25 pm - 11:29 pm
DLH
-
STL
5h 04m
1 stop
$307United Airlines
Tue, Aug 11 - Tue, Aug 18
Delta Logo
11:13 am - 3:31 pm
STL
-
DLH
4h 18m
1 stop
Delta Logo
11:41 am - 4:44 pm
DLH
-
STL
5h 03m
1 stop
$325Delta
Sat, Dec 12 - Wed, Dec 16
United Airlines Logo
7:04 pm - 11:04 pm
STL
-
DLH
4h 00m
1 stop
United Airlines Logo
6:10 pm - 11:09 pm
DLH
-
STL
4h 59m
1 stop
$366United Airlines
Sat, Dec 12 - Wed, Dec 16
United Airlines Logo
7:04 pm - 11:04 pm
STL
-
DLH
4h 00m
1 stop
United Airlines Logo
3:14 pm - 9:13 pm
DLH
-
STL
5h 59m
1 stop
$387United Airlines
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
5:30 pm - 11:22 pm
STL
-
DLH
5h 52m
1 stop
United Airlines Logo
7:45 am - 2:28 pm
DLH
-
STL
6h 43m
1 stop
$405United Airlines
Tue, Jul 14 - Mon, Jul 20
United Airlines Logo
6:00 am - 10:41 am
STL
-
DLH
4h 41m
1 stop
United Airlines Logo
7:03 am - 12:11 pm
DLH
-
STL
5h 08m
1 stop
$427United Airlines
Sun, Sep 20 - Thu, Sep 24
United Airlines Logo
8:00 am - 2:29 pm
STL
-
DLH
6h 29m
1 stop
United Airlines Logo
7:45 am - 12:13 pm
DLH
-
STL
4h 28m
1 stop
$445United Airlines
Tue, Jul 7 - Sat, Jul 11
United Airlines Logo
7:05 pm - 11:23 pm
STL
-
DLH
4h 18m
1 stop
United Airlines Logo
7:03 am - 12:11 pm
DLH
-
STL
5h 08m
1 stop
$452United Airlines
Tue, Jul 14 - Mon, Jul 20
Delta Logo
5:36 pm - 10:49 pm
STL
-
DLH
5h 13m
1 stop
Delta Logo
5:00 am - 8:46 am
DLH
-
STL
3h 46m
1 stop
$476Delta
Booking Insights

KAYAK's insights & trends for St. Louis to Duluth flights

Get data-powered insights and trends into flights from St. Louis to Duluth to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Duluth?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Duluth, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Duluth is December, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and January, where the average cost of round-trip tickets is $661 and $598 respectively.

Find deals

Good to know

Low seasonApril
Cheapest flight$143
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from St. Louis to Duluth

When to book flights from St. Louis to Duluth

Are your dates flexible? Find out the best times to travel from St. Louis to Duluth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Duluth

  • What is the cheapest flight from St. Louis to Duluth?

    In the last 5 days, the lowest price for a flight from St. Louis to Duluth was $143 for a one-way ticket and $298 for a round-trip.

  • Do I need a passport to fly between St. Louis and Duluth?

    A passport is not required to fly from St. Louis to Duluth.

  • Which aircraft models fly most regularly from St. Louis to Duluth?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Duluth?

    SkyTeam is the only airline alliance operating flights between St. Louis and Duluth.

  • How does KAYAK find such low prices on flights from St. Louis to Duluth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Duluth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Duluth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Duluth from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Duluth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Duluth with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and DLH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Duluth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Duluth from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Duluth

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Duluth. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Duluth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8424 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.2Food
7.8Comfort
Airline reviews

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

10.0 ExcellentPaula, Jun 2026
STL - ATL
Read more Delta reviews

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Crew helpful. Plenty of food although not great but ok. Good time.

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Round trip flight to Canada and back to the US was smooth and efficient.

I am writing to express my dissatisfaction with the poor service and unprofessional staff we encountered when traveling with an infant. Our flight was delayed, and the gate staff failed to manage the boarding process appropriately. Due to incorrect, unavailable, or missing 'pink tag' stroller and car seat check-in procedures at the gate, we were forced to board last. Furthermore, the gate staff was rude and dismissive, causing significant distress to our infant. To make matters worse, one of our checked items—an infant sleeper/lounger—was returned to us broken. Given the unsafe handling of essential equipment and unprofessional treatment, I expect a prompt resolution regarding compensation for the damaged items.

My seatback screen didn’t work so that sucked because that’s what I was going to do on the plane.

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Everything you need to know for your flight from St. Louis to Duluth

Information on your arrival and departure airports

St. Louis (STL)
Duluth (DLH)