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Cheap flights from Colorado to Duluth from $178

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Duluth departing on 6/27. 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 Colorado to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 11:07 am
DEN
-
DLH
4h 07m
1 stop
Delta Logo
5:00 am - 8:14 am
DLH
-
DEN
4h 14m
1 stop
$298Delta
Fri, Jun 12 - Mon, Jun 22
Delta Logo
12:11 pm - 7:25 pm
DEN
-
DLH
6h 14m
1 stop
Delta Logo
5:00 am - 8:06 am
DLH
-
DEN
4h 06m
1 stop
$308Delta
Tue, Jul 7 - Tue, Jul 14
Delta Logo
6:10 am - 10:57 am
DEN
-
DLH
3h 47m
1 stop
Delta Logo
4:20 pm - 10:29 pm
DLH
-
DEN
7h 09m
1 stop
$323Delta
Fri, Sep 4 - Fri, Sep 11
Delta Logo
4:00 pm - 11:38 pm
DEN
-
DLH
6h 38m
1 stop
Delta Logo
4:15 pm - 8:00 pm
DLH
-
DEN
4h 45m
1 stop
$325Delta
Wed, Sep 30 - Thu, Oct 8
Delta Logo
6:55 pm - 11:38 pm
DEN
-
DLH
3h 43m
1 stop
Delta Logo
5:10 am - 10:08 am
DLH
-
DEN
5h 58m
1 stop
$328Delta
Thu, Sep 24 - Sun, Sep 27
Delta Logo
6:00 am - 11:07 am
DEN
-
DLH
4h 07m
1 stop
Delta Logo
4:30 pm - 8:02 pm
DLH
-
DEN
4h 32m
1 stop
$333Delta
Fri, Jun 12 - Thu, Jun 18
Delta Logo
6:55 pm - 11:38 pm
DEN
-
DLH
3h 43m
1 stop
Delta Logo
4:20 pm - 10:29 pm
DLH
-
DEN
7h 09m
1 stop
$337Delta
Thu, Oct 1 - Sun, Oct 4
Delta Logo
12:11 pm - 7:25 pm
DEN
-
DLH
6h 14m
1 stop
Delta Logo
8:00 am - 12:05 pm
DLH
-
DEN
5h 05m
1 stop
$342Delta
Wed, Jul 8 - Fri, Jul 10
United Airlines Logo
12:06 pm - 11:11 pm
COS
-
DLH
10h 05m
2 stops
United Airlines Logo
3:03 pm - 9:55 pm
DLH
-
COS
7h 52m
1 stop
$394United Airlines
Fri, May 29 - Thu, Jun 4
United Airlines Logo
12:06 pm - 11:11 pm
COS
-
DLH
10h 05m
2 stops
United Airlines Logo
11:18 am - 9:29 pm
DLH
-
COS
11h 11m
2 stops
$409United Airlines
Fri, May 29 - Thu, Jun 4

United Airlines flights from Colorado to Duluth

Our best United Airlines deals on Colorado to Duluth flight tickets
United Airlines
May 22
DEN4:40 pmDenver Intl
5h 31m
1 stop
DLH11:11 pmDuluth Intl
May 24
DLH6:25 pmDuluth Intl
6h 27m
1 stop
DEN11:52 pmDenver Intl
$328
United Airlines
May 29
COS12:06 pmColorado Springs
10h 05m
2 stops
DLH11:11 pmDuluth Intl
Jun 4
DLH3:03 pmDuluth Intl
7h 52m
1 stop
COS9:55 pmColorado Springs
$394
United Airlines
May 22
DEN4:20 pmDenver Intl
5h 51m
1 stop
DLH11:11 pmDuluth Intl
May 26
DLH6:25 pmDuluth Intl
6h 28m
1 stop
DEN11:53 pmDenver Intl
$408

Delta flights from Colorado to Duluth

Our best Delta deals on Colorado to Duluth flight tickets
Delta
Jun 12
DEN6:00 amDenver Intl
4h 07m
1 stop
DLH11:07 amDuluth Intl
Jun 22
DLH5:00 amDuluth Intl
4h 14m
1 stop
DEN8:14 amDenver Intl
$298
Delta
Jul 7
DEN12:11 pmDenver Intl
6h 14m
1 stop
DLH7:25 pmDuluth Intl
Jul 14
DLH5:00 amDuluth Intl
4h 06m
1 stop
DEN8:06 amDenver Intl
$308
Delta
Sep 4
DEN6:10 amDenver Intl
3h 47m
1 stop
DLH10:57 amDuluth Intl
Sep 11
DLH4:20 pmDuluth Intl
7h 09m
1 stop
DEN10:29 pmDenver Intl
$323

momondo Fare Finder

 
Customize your flight search to find flights from Colorado 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 May 10, 2026.
Use the filters below to find and compare flights from Colorado to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 6/12

6:00 am-11:07 am

1 stop4h 07m

Duluth Intl

Mon 6/22

5:00 am-8:14 am

1 stop4h 14m

$298

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 7/7

12:11 pm-7:25 pm

1 stop6h 14m

Duluth Intl

Tue 7/14

5:00 am-8:06 am

1 stop4h 06m

$308

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 9/4

6:10 am-10:57 am

1 stop3h 47m

Duluth Intl

Fri 9/11

4:20 pm-10:29 pm

1 stop7h 09m

$323

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 9/30

4:00 pm-11:38 pm

1 stop6h 38m

Duluth Intl

Thu 10/8

4:15 pm-8:00 pm

1 stop4h 45m

$325

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 9/24

6:55 pm-11:38 pm

1 stop3h 43m

Duluth Intl

Sun 9/27

5:10 am-10:08 am

1 stop5h 58m

$328

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 6/12

6:00 am-11:07 am

1 stop4h 07m

Duluth Intl

Thu 6/18

4:30 pm-8:02 pm

1 stop4h 32m

$333

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 10/1

6:55 pm-11:38 pm

1 stop3h 43m

Duluth Intl

Sun 10/4

4:20 pm-10:29 pm

1 stop7h 09m

$337

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 7/8

12:11 pm-7:25 pm

1 stop6h 14m

Duluth Intl

Fri 7/10

8:00 am-12:05 pm

1 stop5h 05m

$342

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Fri 5/29

12:06 pm-11:11 pm

2 stops10h 05m

Duluth Intl

Thu 6/4

3:03 pm-9:55 pm

1 stop7h 52m

$394

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Fri 5/29

12:06 pm-11:11 pm

2 stops10h 05m

Duluth Intl

Thu 6/4

11:18 am-9:29 pm

2 stops11h 11m

$409

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Duluth from

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?

The cheapest month to fly to Duluth from Colorado is in March. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Duluth from Colorado during February instead. Flights to Duluth in February, while not as cheap as those in March, still average around $0.

Can stopping save me money on Colorado to Duluth flights?

You could potentially save up to 23% on your flight if you consider stops on a Colorado to Duluth flight.

Cheap Colorado to Duluth flight deals and tips

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

Fastest flight time

3h 43m

Direct flights

None
The fastest flight from Colorado to Duluth takes 3h 43m
There are no direct flights from Colorado to Duluth. There are no popular flight routes from Colorado to Duluth.
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Frequently asked questions about flying from Colorado to Duluth

  • 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?

  • 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 AirPriceFrom $68Free CancellationRating
6.8
334 reviews
Search Sun Country Air flights
DeltaPriceFrom $173Free CancellationRating
7.9
8,453 reviews
Search Delta flights
United AirlinesPriceFrom $181Free CancellationRating
7.4
9,694 reviews
Search United Airlines 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 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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