What is the cheapest airline that flies from Denver Intl to Duluth Intl?

Delta and United Airlines are the most popular carriers operating from Denver Intl to Duluth Intl

What airlines fly to Duluth?

Delta, Sun Country Air and United Airlines are the top three most popular airlines that fly to Duluth from Denver according to our data. Delta is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Duluth. Keep in mind that there are 3 different airlines that fly to Duluth on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Denver Intl Airport to Duluth Intl Airport?

Prices for flights from Denver Intl Airport to Duluth Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Denver Intl Airport to Duluth Intl Airport?

The number of operators available for flights from Denver Intl Airport to Duluth Intl Airport is 3 as of December 2025.

How old do you have to be to fly from Denver Intl Airport to Duluth Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Duluth Intl Airport.

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

The travel and health documents you'll need for your trip to Duluth Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Duluth Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$81 Cheap Flights from Denver to Duluth in 2025/26

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Find the cheapest flights from Denver to Duluth

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 11:15 am

DEN

DLH

4h 15m1 stop

4:24 pm - 8:05 pm

DLH

DEN

4h 41m1 stop

$416Delta

Paz, Oca 4 - Per, Oca 8

5:49 pm - 11:52 pm

DEN

DLH

5h 03m1 stop

11:51 am - 4:41 pm

DLH

DEN

5h 50m1 stop

$443Delta

Cum, Oca 30 - Paz, Şub 1

5:49 pm - 11:25 pm

DEN

DLH

4h 36m1 stop

12:15 pm - 4:39 pm

DLH

DEN

5h 24m1 stop

$452Delta

Per, Şub 26 - Pzt, Mar 2

5:49 pm - 11:52 pm

DEN

DLH

5h 03m1 stop

12:15 pm - 4:39 pm

DLH

DEN

5h 24m1 stop

$458Delta

Çar, Şub 11 - Pzt, Şub 16

3:15 pm - 9:59 pm

DEN

DLH

5h 44m1 stop

3:05 pm - 9:59 pm

DLH

DEN

7h 54m1 stop

$469United Airlines

Cmt, Şub 7 - Sal, Şub 10

3:15 pm - 9:59 pm

DEN

DLH

5h 44m1 stop

3:05 pm - 8:13 pm

DLH

DEN

6h 08m1 stop

$477United Airlines

Cmt, Şub 7 - Sal, Şub 10

6:00 am - 2:28 pm

DEN

DLH

7h 28m1 stop

3:05 pm - 9:59 pm

DLH

DEN

7h 54m1 stop

$495United Airlines

Cmt, Oca 3 - Çar, Oca 7

5:51 pm - 11:52 pm

DEN

DLH

5h 01m1 stop

4:24 pm - 8:05 pm

DLH

DEN

4h 41m1 stop

$508Delta

Cum, Oca 16 - Pzt, Oca 19

7:50 am - 2:30 pm

DEN

DLH

5h 40m1 stop

3:05 pm - 10:00 pm

DLH

DEN

7h 55m1 stop

$516United Airlines

Sal, Oca 13 - Paz, Oca 18

6:00 am - 2:28 pm

DEN

DLH

7h 28m1 stop

3:03 pm - 7:46 pm

DLH

DEN

5h 43m1 stop

$525United Airlines

Cum, Oca 2 - Pzt, Oca 5

Delta flights from Denver to Duluth

Our best Delta deals on Denver to Duluth flight tickets

Delta

Jan 27

DEN5:49 pmDenver Intl

5h 03m

1 stop

DLH11:52 pmDuluth Intl

Feb 3

DLH11:51 amDuluth Intl

5h 50m

1 stop

DEN4:41 pmDenver Intl

$258

Find similar

Delta

Jan 27

DEN5:49 pmDenver Intl

5h 03m

1 stop

DLH11:52 pmDuluth Intl

Feb 5

DLH11:51 amDuluth Intl

5h 50m

1 stop

DEN4:41 pmDenver Intl

$293

Find similar

Delta

Jan 27

DEN5:49 pmDenver Intl

5h 03m

1 stop

DLH11:52 pmDuluth Intl

Jan 30

DLH11:56 amDuluth Intl

5h 45m

1 stop

DEN4:41 pmDenver Intl

$298

Find similar

United Airlines flights from Denver to Duluth

Our best United Airlines deals on Denver to Duluth flight tickets

United Airlines

Jan 2

DEN6:00 amDenver Intl

7h 28m

1 stop

DLH2:28 pmDuluth Intl

Jan 6

DLH3:05 pmDuluth Intl

7h 54m

1 stop

DEN9:59 pmDenver Intl

$333

Find similar

United Airlines

Feb 7

DEN3:15 pmDenver Intl

5h 44m

1 stop

DLH9:59 pmDuluth Intl

Feb 10

DLH3:05 pmDuluth Intl

7h 54m

1 stop

DEN9:59 pmDenver Intl

$469

Find similar

United Airlines

Feb 7

DEN3:15 pmDenver Intl

5h 44m

1 stop

DLH9:59 pmDuluth Intl

Feb 10

DLH3:05 pmDuluth Intl

6h 08m

1 stop

DEN8:13 pmDenver Intl

$477

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Paz 1/4

6:00 am-11:15 am

1 stop4h 15m

Duluth Intl

Per 1/8

4:24 pm-8:05 pm

1 stop4h 41m

$416

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Cum 1/30

5:49 pm-11:52 pm

1 stop5h 03m

Duluth Intl

Paz 2/1

11:51 am-4:41 pm

1 stop5h 50m

$443

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Per 2/26

5:49 pm-11:25 pm

1 stop4h 36m

Duluth Intl

Pzt 3/2

12:15 pm-4:39 pm

1 stop5h 24m

$452

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Çar 2/11

5:49 pm-11:52 pm

1 stop5h 03m

Duluth Intl

Pzt 2/16

12:15 pm-4:39 pm

1 stop5h 24m

$458

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Cmt 2/7

3:15 pm-9:59 pm

1 stop5h 44m

Duluth Intl

Sal 2/10

3:05 pm-9:59 pm

1 stop7h 54m

$469

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Cmt 2/7

3:15 pm-9:59 pm

1 stop5h 44m

Duluth Intl

Sal 2/10

3:05 pm-8:13 pm

1 stop6h 08m

$477

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Cmt 1/3

6:00 am-2:28 pm

1 stop7h 28m

Duluth Intl

Çar 1/7

3:05 pm-9:59 pm

1 stop7h 54m

$495

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Cum 1/16

5:51 pm-11:52 pm

1 stop5h 01m

Duluth Intl

Pzt 1/19

4:24 pm-8:05 pm

1 stop4h 41m

$508

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sal 1/13

7:50 am-2:30 pm

1 stop5h 40m

Duluth Intl

Paz 1/18

3:05 pm-10:00 pm

1 stop7h 55m

$516

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Cum 1/2

6:00 am-2:28 pm

1 stop7h 28m

Duluth Intl

Pzt 1/5

3:03 pm-7:46 pm

1 stop5h 43m

$525

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Denver 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

Prices

Airlines

What is the cheapest month to fly to Duluth?

The cheapest month to fly to Duluth from Denver is in December. Flight prices, which tend to average around $264, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Duluth from Denver during November instead. Flights to Duluth in November, while not as cheap as those in December, still average around $266.

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

The cheapest day to depart from Denver to Duluth is on a Monday when prices can be found for as low as $223. On the other hand, Saturday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $408.

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

Flying to Duluth from Denver in the evening is the least expensive time of day to depart. momondo users have found prices as low as $268 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Duluth is in the morning when prices are around $367.

How have Denver to Duluth flight prices changed over time?

When to book flights from Denver to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Duluth according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Denver to Duluth (DEN to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Duluth

Fastest flight time	3h 43m
Direct flights	None

The fastest flight from Denver to Duluth takes 3h 43m

There are no direct flights from Denver to Duluth. There are no popular flight routes from Denver to Duluth.

Search flight deals

How far is Denver Intl to Duluth Intl by plane?
There are 808.1 mi between Denver Intl and Duluth Intl. Typically, this will take 3h 43m by plane in normal conditions.
When did momondo last update prices for flights from Denver Intl Airport to Duluth Intl Airport?
Prices for flights from Denver Intl Airport to Duluth Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Denver Intl Airport to Duluth Intl Airport?
The number of operators available for flights from Denver Intl Airport to Duluth Intl Airport is 3 as of December 2025.
How old do you have to be to fly from Denver Intl Airport to Duluth Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Duluth Intl Airport.
What documentation or ID do you need to fly to Duluth Intl Airport?
The travel and health documents you'll need for your trip to Duluth Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Duluth Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Denver to Duluth?
momondo data reveals that the most frequently booked airline on the route from Denver to Duluth is Delta, representing 68% of all bookings. The subsequent popular airlines are Sun Country Air at 20% and United Airlines at 12%.

Best airlines flying from Denver to Duluth

Compare and see reviews for airlines that fly from Denver to Duluth with momondo

Airline	Rating	Free Cancellation	Price
Sun Country Air	PriceFrom $68	Free Cancellation	Rating 6.9 333 reviews	Search Sun Country Air flights
Delta	PriceFrom $238	Free Cancellation	Rating 7.9 8,018 reviews	Search Delta flights
United Airlines	PriceFrom $298	Free Cancellation	Rating 7.4 9,097 reviews	Search United Airlines flights

Two Harbors

Hayward

Superior

Cloquet

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Duluth?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Duluth for you.

Can I find flights from Denver to Duluth with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Denver to Duluth flights to just show those with flexible booking policies.

How can momondo help me find flights from Denver to Duluth?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Duluth from Denver.

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

If you are simply researching potential flights to Duluth, momondo offers a useful price alert feature which will track prices for flights to Duluth from Denver and alert you when they change.