STL - DLH

$308 Find Cheap Flights from St. Louis to Duluth

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Duluth departing on 2/14. 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
$308
Delta
Sat 2/14Tue 2/17
STL - DLH • 1 stop
Cheapest one-way
Multiple Airlines
Mon 1/19
STL - DLH • multi-stop
Top airlines
Delta
Cheapest • from $308 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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

Sat, Feb 14 - Tue, Feb 17
Delta Logo
6:10 am - 11:30 am
STL
-
DLH
5h 20m
1 stop
Delta Logo
5:00 am - 10:43 am
DLH
-
STL
5h 43m
1 stop
$308Delta
Tue, Feb 3 - Sat, Feb 7
United Airlines Logo
9:57 am - 2:30 pm
STL
-
DLH
4h 33m
1 stop
United Airlines Logo
3:05 pm - 7:27 pm
DLH
-
STL
4h 22m
1 stop
$499United Airlines
Mon, Mar 9 - Thu, Mar 12
Delta Logo
6:29 am - 11:56 am
STL
-
DLH
5h 27m
1 stop
Delta Logo
8:04 am - 2:24 pm
DLH
-
STL
6h 20m
1 stop
$564Delta
Tue, Feb 3 - Sat, Feb 7
United Airlines Logo
9:57 am - 2:30 pm
STL
-
DLH
4h 33m
1 stop
United Airlines Logo
3:05 pm - 8:58 pm
DLH
-
STL
29h 53m
2 stops
$584United Airlines
Tue, Feb 3 - Sat, Feb 7
United Airlines Logo
3:11 pm - 9:59 pm
STL
-
DLH
6h 48m
1 stop
United Airlines Logo
3:05 pm - 4:55 pm
DLH
-
STL
25h 50m
2 stops
$596United Airlines
Sat, Feb 14 - Tue, Feb 17
United Airlines Logo
6:25 am - 10:43 am
STL
-
DLH
4h 18m
1 stop
United Airlines Logo
11:20 am - 10:13 am
DLH
-
STL
22h 53m
2 stops
$601United Airlines
Sun, Feb 1 - Thu, Feb 5
United Airlines Logo
9:57 am - 2:30 pm
STL
-
DLH
4h 33m
1 stop
United Airlines Logo
7:40 am - 12:29 pm
DLH
-
STL
4h 49m
1 stop
$652United Airlines
Mon, Feb 2 - Fri, Feb 6
United Airlines Logo
4:49 pm - 9:59 pm
STL
-
DLH
5h 10m
1 stop
United Airlines Logo
3:05 pm - 3:39 pm
DLH
-
STL
24h 34m
2 stops
$702United Airlines
Mon, Mar 9 - Thu, Mar 12
United Airlines Logo
6:00 am - 10:43 am
STL
-
DLH
28h 43m
2 stops
United Airlines Logo
3:07 pm - 9:42 pm
DLH
-
STL
6h 35m
1 stop
$713United Airlines
Mon, Mar 9 - Thu, Mar 12
United Airlines Logo
5:55 pm - 2:32 pm
STL
-
DLH
20h 37m
2 stops
United Airlines Logo
11:20 am - 11:34 pm
DLH
-
STL
12h 14m
2 stops
$756United Airlines
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.

Which airlines provide the cheapest flights from St. Louis to Duluth?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Duluth were found on Delta ($308) and United Airlines ($499).

Good to know

Low seasonApril
Cheapest flight$308
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly with an average 24% 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 3 days, the lowest price for a flight from St. Louis to Duluth was $308 for a round-trip ticket.

  • 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?

    Star Alliance, and SkyTeam are the airline alliances operating flights between St. Louis and Duluth, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Duluth, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Duluth are Delta and United Airlines. With an average price for the route of $378 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $492 and an overall rating of 7.4.

  • 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 airlines 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.
7.9
DeltaOverall score based on 8075 reviews
7.8Entertainment
7.2Food
8.1Boarding
7.9Comfort
8.5Crew
Airline reviews

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

4.0 Okaybyron, Jan 2026
CWA - MSP
Read more Delta reviews

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

Good seats in Main cabin, excellent service and excellent landing

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

On time flight. Seat comfort could be better in the Comfort section.

My only complaint on any flight is meals but your gnocchi was good. The worst is breakfast. I can’t understand why you don’t just serve something simple like yogurt, fruit and a muffin or cinnamon roll.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The flight crew where really good. Better then the crew from BNE to SFO

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

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

Information on your arrival and departure airports