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?

As of December 2025, there are 2 operators available to choose from 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.

$138 Cheap Flights from St. Louis to Duluth in 2025/26

1 adult

0 bags

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Find the cheapest flights from St. Louis to Duluth

Round-trip

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Cheap round-trip flights

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6:10 am - 11:16 am

STL

DLH

5h 06m1 stop

11:56 am - 4:45 pm

DLH

STL

4h 49m1 stop

$348Delta

Sat, Jan 10 - Wed, Jan 14

9:57 am - 2:30 pm

STL

DLH

4h 33m1 stop

3:05 pm - 7:27 pm

DLH

STL

4h 22m1 stop

$384United Airlines

Thu, Jan 15 - Thu, Jan 22

6:25 am - 10:43 am

STL

DLH

4h 18m1 stop

3:19 pm - 9:40 pm

DLH

STL

6h 21m1 stop

$398United Airlines

Sat, Feb 21 - Wed, Feb 25

6:25 am - 10:43 am

STL

DLH

4h 18m1 stop

3:19 pm - 10:13 am

DLH

STL

18h 54m2 stops

$586United Airlines

Sat, Feb 21 - Wed, Feb 25

9:57 am - 2:30 pm

STL

DLH

4h 33m1 stop

3:05 pm - 1:16 pm

DLH

STL

22h 11m2 stops

$616United Airlines

Thu, Jan 15 - Thu, Jan 22

4:49 pm - 9:59 pm

STL

DLH

5h 10m1 stop

3:05 pm - 10:00 pm

DLH

STL

30h 55m2 stops

$645United Airlines

Sat, Jan 10 - Wed, Jan 14

10:19 am - 7:35 pm

STL

DLH

9h 16m2 stops

11:56 am - 8:43 pm

DLH

STL

8h 47m2 stops

$1,485Delta

Sat, Jan 10 - Wed, Jan 14

Delta flights from St. Louis to Duluth

Our best Delta deals on St. Louis to Duluth flight tickets

Delta

Jan 10

STL6:10 amLambert-St Louis

5h 06m

1 stop

DLH11:16 amDuluth Intl

Jan 14

DLH11:56 amDuluth Intl

4h 49m

1 stop

STL4:45 pmLambert-St Louis

$348

Find similar

Delta

Jan 10

STL10:19 amLambert-St Louis

9h 16m

2 stops

DLH7:35 pmDuluth Intl

Jan 14

DLH11:56 amDuluth Intl

8h 47m

2 stops

STL8:43 pmLambert-St Louis

$1,485

Find similar

United Airlines flights from St. Louis to Duluth

Our best United Airlines deals on St. Louis to Duluth flight tickets

United Airlines

Jan 15

STL9:57 amLambert-St Louis

4h 33m

1 stop

DLH2:30 pmDuluth Intl

Jan 22

DLH3:05 pmDuluth Intl

4h 22m

1 stop

STL7:27 pmLambert-St Louis

$384

Find similar

United Airlines

Feb 21

STL6:25 amLambert-St Louis

4h 18m

1 stop

DLH10:43 amDuluth Intl

Feb 25

DLH3:19 pmDuluth Intl

6h 21m

1 stop

STL9:40 pmLambert-St Louis

$398

Find similar

United Airlines

Feb 21

STL6:25 amLambert-St Louis

4h 18m

1 stop

DLH10:43 amDuluth Intl

Feb 25

DLH11:20 amDuluth Intl

25h 54m

2 stops

STL1:14 pmLambert-St Louis

$565

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 1/10

6:10 am-11:16 am

1 stop5h 06m

Duluth Intl

Wed 1/14

11:56 am-4:45 pm

1 stop4h 49m

$348

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Thu 1/15

9:57 am-2:30 pm

1 stop4h 33m

Duluth Intl

Thu 1/22

3:05 pm-7:27 pm

1 stop4h 22m

$384

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 2/21

6:25 am-10:43 am

1 stop4h 18m

Duluth Intl

Wed 2/25

3:19 pm-9:40 pm

1 stop6h 21m

$398

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 2/21

6:25 am-10:43 am

1 stop4h 18m

Duluth Intl

Wed 2/25

3:19 pm-10:13 am

2 stops18h 54m

$586

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Thu 1/15

9:57 am-2:30 pm

1 stop4h 33m

Duluth Intl

Thu 1/22

3:05 pm-1:16 pm

2 stops22h 11m

$616

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 1/10

4:49 pm-9:59 pm

1 stop5h 10m

Duluth Intl

Wed 1/14

3:05 pm-10:00 pm

2 stops30h 55m

$645

St. LouisDuluth

STL - DLH

STLDLH

Lambert-St Louis

Sat 1/10

10:19 am-7:35 pm

2 stops9h 16m

Duluth Intl

Wed 1/14

11:56 am-8:43 pm

2 stops8h 47m

$1,485

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest day to depart on your flight to Duluth?

The cheapest day to depart from St. Louis to Duluth is on a Tuesday when prices can be found for as low as $262. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $577.

What is the cheapest time of day to depart on your flight to Duluth?

Flying to Duluth from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $308 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Duluth is in the afternoon when prices are around $415.

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	4h 18m
Direct flights	None

The fastest flight from St. Louis to Duluth takes 4h 18m

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 4h 18m.
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?
As of December 2025, there are 2 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Duluth is Delta, representing 71% of all bookings. The subsequent popular airline is United Airlines at 29%.

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
Delta	PriceFrom $238	Free Cancellation	Rating 7.9 8,018 reviews		Search Delta flights
United Airlines	PriceFrom $300	Free Cancellation	Rating 7.4 9,116 reviews		Search United Airlines flights

Two Harbors

Hayward

Superior

Cloquet

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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.

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