What airlines fly to Duluth?

Delta, United Airlines and Sun Country Air are the top three most popular airlines that fly to Duluth from Colorado according to our data. Delta is the first choice among our users, with 68% 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.

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

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

How long does it take to fly to Duluth?

If you’re flying from a popular airport in Colorado, such as Denver or Colorado Springs, and flying into Duluth, then you can expect flight times to average 3h 49m and 7h 15m, respectively.

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

Prices for flights from Colorado to Duluth Intl Airport were last updated today.

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

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

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado 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.

$238 Cheap Flights from Colorado to Duluth in 2025

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Find the cheapest flights from Colorado to Duluth

Round-trip

One-way

Cheap round-trip flights

10:50 am - 3:39 pmDEN-DLH

3h 49m1 stop

7:50 am - 12:49 pmDLH-DEN

5h 59m1 stop

$238Delta

Find Deal

Thu, Sep 4 - Tue, Sep 9

6:55 pm - 11:44 pmDEN-DLH

3h 49m1 stop

4:20 pm - 8:00 pmDLH-DEN

4h 40m1 stop

$241Delta

Find Deal

Mon, Nov 10 - Fri, Nov 14

6:53 pm - 11:42 pmDEN-DLH

3h 49m1 stop

12:02 pm - 3:42 pmDLH-DEN

4h 40m1 stop

$280Delta

Find Deal

Wed, Nov 5 - Fri, Nov 7

6:25 pm - 3:39 pmDEN-DLH

20h 14m2 stops

7:50 am - 12:49 pmDLH-DEN

5h 59m1 stop

$291Delta

Find Deal

Thu, Sep 4 - Tue, Sep 9

6:00 am - 11:22 amDEN-DLH

4h 22m1 stop

12:02 pm - 3:42 pmDLH-DEN

4h 40m1 stop

$292Delta

Find Deal

Thu, Oct 23 - Sun, Oct 26

4:00 pm - 10:43 pmDEN-DLH

5h 43m1 stop

5:10 am - 9:55 amDLH-DEN

5h 45m1 stop

$293Delta

Find Deal

Sat, Sep 13 - Tue, Sep 23

2:45 pm - 10:05 pmDEN-DLH

6h 20m1 stop

9:45 am - 3:39 pmDLH-DEN

6h 54m1 stop

$328United Airlines

Find Deal

Tue, Aug 19 - Sat, Aug 23

6:16 pm - 10:15 amDEN-DLH

14h 59m1 stop

7:50 am - 12:49 pmDLH-DEN

5h 59m1 stop

$345Delta

Find Deal

Sat, Aug 30 - Wed, Sep 3

4:00 pm - 10:46 pmDEN-DLH

5h 46m1 stop

4:19 pm - 7:55 pmDLH-DEN

4h 36m1 stop

$348Delta

Find Deal

Tue, Sep 2 - Sun, Sep 7

8:45 pm - 2:35 pmDEN-DLH

16h 50m2 stops

9:45 am - 2:37 pmDLH-DEN

5h 52m1 stop

$367United Airlines

Find Deal

Tue, Sep 2 - Sat, Sep 6

United Airlines flights from Colorado to Duluth

Our best United Airlines deals on Colorado to Duluth flight tickets

United Airlines

Aug 19

DEN2:45 pmDenver Intl

6h 20m

1 stop

DLH10:05 pmDuluth Intl

Aug 23

DLH9:45 amDuluth Intl

6h 54m

1 stop

DEN3:39 pmDenver Intl

$328

Find similar

United Airlines

Sep 2

DEN8:45 pmDenver Intl

16h 50m

2 stops

DLH2:35 pmDuluth Intl

Sep 6

DLH9:45 amDuluth Intl

5h 52m

1 stop

DEN2:37 pmDenver Intl

$367

Find similar

United Airlines

Sep 2

DEN8:28 pmDenver Intl

13h 17m

1 stop

DLH10:45 amDuluth Intl

Sep 6

DLH8:00 amDuluth Intl

5h 43m

1 stop

DEN12:43 pmDenver Intl

$376

Find similar

Delta flights from Colorado to Duluth

Our best Delta deals on Colorado to Duluth flight tickets

Delta

Sep 4

DEN10:50 amDenver Intl

3h 49m

1 stop

DLH3:39 pmDuluth Intl

Sep 9

DLH7:50 amDuluth Intl

5h 59m

1 stop

DEN12:49 pmDenver Intl

$238

Find similar

Delta

Nov 10

DEN6:55 pmDenver Intl

3h 49m

1 stop

DLH11:44 pmDuluth Intl

Nov 14

DLH4:20 pmDuluth Intl

4h 40m

1 stop

DEN8:00 pmDenver Intl

$241

Find similar

Delta

Nov 5

DEN6:53 pmDenver Intl

3h 49m

1 stop

DLH11:42 pmDuluth Intl

Nov 7

DLH12:02 pmDuluth Intl

4h 40m

1 stop

DEN3:42 pmDenver Intl

$280

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 9/4

10:50 am-3:39 pm

1 stop3h 49m

Duluth Intl

Tue 9/9

7:50 am-12:49 pm

1 stop5h 59m

$238

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 11/10

6:55 pm-11:44 pm

1 stop3h 49m

Duluth Intl

Fri 11/14

4:20 pm-8:00 pm

1 stop4h 40m

$241

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 11/5

6:53 pm-11:42 pm

1 stop3h 49m

Duluth Intl

Fri 11/7

12:02 pm-3:42 pm

1 stop4h 40m

$280

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 9/4

6:25 pm-3:39 pm

2 stops20h 14m

Duluth Intl

Tue 9/9

7:50 am-12:49 pm

1 stop5h 59m

$291

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 10/23

6:00 am-11:22 am

1 stop4h 22m

Duluth Intl

Sun 10/26

12:02 pm-3:42 pm

1 stop4h 40m

$292

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 9/13

4:00 pm-10:43 pm

1 stop5h 43m

Duluth Intl

Tue 9/23

5:10 am-9:55 am

1 stop5h 45m

$293

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 8/19

2:45 pm-10:05 pm

1 stop6h 20m

Duluth Intl

Sat 8/23

9:45 am-3:39 pm

1 stop6h 54m

$328

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 8/30

6:16 pm-10:15 am

1 stop14h 59m

Duluth Intl

Wed 9/3

7:50 am-12:49 pm

1 stop5h 59m

$345

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 9/2

4:00 pm-10:46 pm

1 stop5h 46m

Duluth Intl

Sun 9/7

4:19 pm-7:55 pm

1 stop4h 36m

$348

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 9/2

8:45 pm-2:35 pm

2 stops16h 50m

Duluth Intl

Sat 9/6

9:45 am-2:37 pm

1 stop5h 52m

$367

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado 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

Other information

What is the cheapest month to fly to Duluth?

The cheapest month to fly to Duluth from Colorado is in September. Flight prices, which tend to average around $282, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Duluth from Colorado during November instead. Flights to Duluth in November, while not as cheap as those in September, still average around $283.

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

The cheapest day to depart from Colorado 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 Colorado 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 Colorado 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 far in advance should I book a flight to Duluth?

You are more likely to see cheaper flights to Duluth from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Duluth for around $352 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Duluth from Colorado for as low as $207 on momondo.

Cheap Colorado to Duluth flight deals and tips

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

Best Price Found	$331
Fastest flight time	3h 49m
Direct flights	None
Airports in Duluth	1 airport

The best one-way flight to Duluth from Colorado in the past 72 hours is $331. The best round-trip flight deal from Colorado to Duluth found on momondo in the last 72 hours is $238.

The fastest flight from Colorado to Duluth takes 3h 49m

There are no direct flights from Colorado to Duluth. Popular non-direct routes for this connection are Denver Intl Airport - Duluth Intl Airport and Colorado Springs Airport - Duluth Intl Airport.

There is 1 airport near Duluth: Duluth Intl (DLH)

Search flight deals

When did momondo last update prices for flights from Colorado to Duluth Intl Airport?
Prices for flights from Colorado to Duluth Intl Airport were last updated today.
How many operators does momondo search for flights from Colorado to Duluth Intl Airport?
The number of operators available for flights from Colorado to Duluth Intl Airport is 3 as of August 2025.
How old do you have to be to fly from Colorado to Duluth Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado 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.

Best airlines flying from Colorado to Duluth

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

Airline	Rating	Free Cancellation	Price
Sun Country Air	PriceFrom $68	Free Cancellation	Rating 6.9 334 reviews	Search Sun Country Air flights
Delta	PriceFrom $221	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
United Airlines	PriceFrom $250	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights

Two Harbors

Hayward

Superior

Cloquet

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Colorado to Duluth. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Colorado 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 Colorado 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 Colorado.

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

Yes momondo offers price alerts on flights to Duluth from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Colorado to Duluth from $238

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Duluth departing on 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Colorado to Duluth

Our best United Airlines deals on Colorado to Duluth flight tickets

Delta flights from Colorado to Duluth

Our best Delta deals on Colorado to Duluth flight tickets

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How to get the cheapest flight ticket from Colorado 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 month to fly to Duluth?

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

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

Flying to Duluth from Colorado 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 far in advance should I book a flight to Duluth?

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

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

What airlines fly to Duluth?

How long does it take to fly to Duluth?

If you’re flying from a popular airport in Colorado, such as Denver or Colorado Springs, and flying into Duluth, then you can expect flight times to average 3h 49m and 7h 15m, respectively.

Cheap Colorado to Duluth flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Duluth

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

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

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

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

Best airlines flying from Colorado to Duluth

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

Traveling to a place near Duluth?

Why use momondo?

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

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

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

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

An easier way to manage your Duluth trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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