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Cheap flights from St. Louis to Duluth from $253

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Duluth departing on 4/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:45 am - 2:27 pm
STL
-
DLH
6h 42m
1 stop
United Airlines Logo
6:57 pm - 11:11 pm
DLH
-
STL
4h 14m
1 stop
$253United Airlines
Sat, Apr 25 - Sun, Apr 26
United Airlines Logo
7:09 pm - 12:42 am
STL
-
DLH
5h 33m
1 stop
United Airlines Logo
3:03 pm - 9:18 pm
DLH
-
STL
6h 15m
1 stop
$258United Airlines
Wed, May 20 - Sat, May 23
United Airlines Logo
6:30 am - 10:39 am
STL
-
DLH
4h 09m
1 stop
United Airlines Logo
3:08 pm - 9:13 pm
DLH
-
STL
6h 05m
1 stop
$268United Airlines
Wed, Apr 8 - Mon, Apr 13
United Airlines Logo
6:30 am - 10:39 am
STL
-
DLH
4h 09m
1 stop
United Airlines Logo
3:08 pm - 9:13 pm
DLH
-
STL
6h 05m
1 stop
$303United Airlines
Wed, Apr 8 - Sat, Apr 11
United Airlines Logo
7:45 am - 2:27 pm
STL
-
DLH
6h 42m
1 stop
United Airlines Logo
6:57 pm - 11:11 pm
DLH
-
STL
4h 14m
1 stop
$318United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
6:30 am - 10:34 am
STL
-
DLH
4h 04m
1 stop
United Airlines Logo
2:57 pm - 9:13 pm
DLH
-
STL
6h 16m
1 stop
$337United Airlines
Tue, May 5 - Wed, May 13
Delta Logo
6:29 am - 11:56 am
STL
-
DLH
5h 27m
1 stop
Delta Logo
5:00 am - 9:01 am
DLH
-
STL
4h 01m
1 stop
$338Delta
Thu, Mar 19 - Sun, Mar 22
United Airlines Logo
6:00 am - 10:43 am
STL
-
DLH
4h 43m
1 stop
United Airlines Logo
11:18 am - 3:46 pm
DLH
-
STL
4h 28m
1 stop
$347United Airlines
Thu, Jun 11 - Sat, Jun 13
United Airlines Logo
6:30 am - 10:39 am
STL
-
DLH
4h 09m
1 stop
United Airlines Logo
3:08 pm - 7:31 pm
DLH
-
STL
4h 23m
1 stop
$364United Airlines
Wed, Apr 8 - Sat, Apr 11
Delta Logo
5:25 pm - 10:47 pm
STL
-
DLH
5h 22m
1 stop
Delta Logo
5:00 am - 9:01 am
DLH
-
STL
4h 01m
1 stop
$388Delta
Wed, Mar 18 - Sun, Mar 22

United Airlines flights from St. Louis to Duluth

Our best United Airlines deals on St. Louis to Duluth flight tickets
United Airlines
May 5
STL6:30 amLambert-St Louis
4h 04m
1 stop
DLH10:34 amDuluth Intl
May 13
DLH2:57 pmDuluth Intl
6h 16m
1 stop
STL9:13 pmLambert-St Louis
$241
United Airlines
Apr 25
STL7:45 amLambert-St Louis
6h 42m
1 stop
DLH2:27 pmDuluth Intl
Apr 26
DLH6:57 pmDuluth Intl
4h 14m
1 stop
STL11:11 pmLambert-St Louis
$253
United Airlines
May 20
STL7:09 pmLambert-St Louis
5h 33m
1 stop
DLH12:42 amDuluth Intl
May 23
DLH3:03 pmDuluth Intl
6h 15m
1 stop
STL9:18 pmLambert-St Louis
$258

Delta flights from St. Louis to Duluth

Our best Delta deals on St. Louis to Duluth flight tickets
Delta
Mar 19
STL6:29 amLambert-St Louis
5h 27m
1 stop
DLH11:56 amDuluth Intl
Mar 22
DLH5:00 amDuluth Intl
4h 01m
1 stop
STL9:01 amLambert-St Louis
$338
Delta
Mar 18
STL5:25 pmLambert-St Louis
5h 22m
1 stop
DLH10:47 pmDuluth Intl
Mar 22
DLH5:00 amDuluth Intl
4h 01m
1 stop
STL9:01 amLambert-St Louis
$388
Delta
Jul 2
STL12:10 pmLambert-St Louis
3h 09m
1 stop
DLH3:19 pmDuluth Intl
Jul 5
DLH5:10 amDuluth Intl
3h 30m
1 stop
STL8:40 amLambert-St Louis
$488

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 6, 2026.
Use the filters below to find and compare flights from St. Louis to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 4/25

7:45 am-2:27 pm

1 stop6h 42m

Duluth Intl

Sun 4/26

6:57 pm-11:11 pm

1 stop4h 14m

$253

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Wed 5/20

7:09 pm-12:42 am

1 stop5h 33m

Duluth Intl

Sat 5/23

3:03 pm-9:18 pm

1 stop6h 15m

$258

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Wed 4/8

6:30 am-10:39 am

1 stop4h 09m

Duluth Intl

Mon 4/13

3:08 pm-9:13 pm

1 stop6h 05m

$268

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Wed 4/8

6:30 am-10:39 am

1 stop4h 09m

Duluth Intl

Sat 4/11

3:08 pm-9:13 pm

1 stop6h 05m

$303

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 4/18

7:45 am-2:27 pm

1 stop6h 42m

Duluth Intl

Wed 4/22

6:57 pm-11:11 pm

1 stop4h 14m

$318

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Tue 5/5

6:30 am-10:34 am

1 stop4h 04m

Duluth Intl

Wed 5/13

2:57 pm-9:13 pm

1 stop6h 16m

$337

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Thu 3/19

6:29 am-11:56 am

1 stop5h 27m

Duluth Intl

Sun 3/22

5:00 am-9:01 am

1 stop4h 01m

$338

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Thu 6/11

6:00 am-10:43 am

1 stop4h 43m

Duluth Intl

Sat 6/13

11:18 am-3:46 pm

1 stop4h 28m

$347
Quickest round-trip

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Wed 4/8

6:30 am-10:39 am

1 stop4h 09m

Duluth Intl

Sat 4/11

3:08 pm-7:31 pm

1 stop4h 23m

$364

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Wed 3/18

5:25 pm-10:47 pm

1 stop5h 22m

Duluth Intl

Sun 3/22

5:00 am-9:01 am

1 stop4h 01m

$388

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Duluth from

How to get the cheapest flight ticket from St. Louis to Duluth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Duluth?

When to book flights from St. Louis to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Duluth according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Duluth (STL to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Duluth

Fastest flight time

3h 09m

Direct flights

None
The fastest flight from St. Louis to Duluth takes 3h 09m
There are no direct flights from St. Louis to Duluth. There are no popular flight routes from St. Louis to Duluth.
Search flight deals

  • How far is Lambert-St Louis to Duluth Intl by plane?

    Lambert-St Louis and Duluth Intl are 571.3 mi apart from one another. In terms of flight time, this usually takes a little over 3h 09m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Duluth Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Duluth Intl Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Duluth Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Duluth Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Duluth Intl Airport.

  • What documentation or ID do you need to fly to Duluth Intl Airport?

    The necessary travel and health documents for your Duluth Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Duluth?

Best airlines flying from St. Louis to Duluth

Compare and see reviews for airlines that fly from St. Louis to Duluth with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,403 reviews
Search United Airlines flights
DeltaPriceFrom $233Free CancellationRating
7.9
8,258 reviews
Search Delta flights

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior
Hayward
Cloquet

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Duluth?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Duluth. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Duluth with flexible booking policies on momondo?

Flights from St. Louis to Duluth with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Duluth?

Once you have performed a search for St. Louis to Duluth flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Duluth right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Duluth now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Duluth and let you know when they change.

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