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Cheap flights from Colorado to Duluth from $145

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 4/22. 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.
United Airlines Logo
6:00 am - 2:27 pm
DEN
-
DLH
7h 27m
1 stop
United Airlines Logo
3:08 pm - 10:05 pm
DLH
-
DEN
7h 57m
1 stop
$258United Airlines
Thu, Apr 23 - Mon, Apr 27
Delta Logo
6:44 pm - 11:38 pm
DEN
-
DLH
3h 54m
1 stop
Delta Logo
5:10 am - 8:03 am
DLH
-
DEN
3h 53m
1 stop
$290Delta
Fri, May 15 - Tue, May 19
United Airlines Logo
4:45 pm - 12:43 am
DEN
-
DLH
6h 58m
1 stop
United Airlines Logo
6:10 pm - 12:53 am
DLH
-
DEN
7h 43m
1 stop
$313United Airlines
Wed, Jul 8 - Mon, Jul 13
United Airlines Logo
6:00 am - 2:33 pm
DEN
-
DLH
7h 33m
1 stop
United Airlines Logo
6:10 pm - 11:37 pm
DLH
-
DEN
6h 27m
1 stop
$317United Airlines
Sat, May 30 - Wed, Jun 3
United Airlines Logo
6:00 am - 2:27 pm
DEN
-
DLH
7h 27m
1 stop
United Airlines Logo
7:45 am - 12:45 pm
DLH
-
DEN
6h 00m
1 stop
$328United Airlines
Sat, Apr 18 - Tue, Apr 21
United Airlines Logo
6:00 pm - 12:43 am
DEN
-
DLH
5h 43m
1 stop
United Airlines Logo
6:10 pm - 12:53 am
DLH
-
DEN
7h 43m
1 stop
$341United Airlines
Wed, Jul 8 - Sun, Jul 12
Delta Logo
6:00 am - 10:57 am
DEN
-
DLH
3h 57m
1 stop
Delta Logo
5:10 am - 8:03 am
DLH
-
DEN
3h 53m
1 stop
$379Delta
Tue, May 26 - Sun, May 31
Delta Logo
7:05 am - 11:55 pm
DEN
-
DLH
15h 50m
2 stops
Delta Logo
4:15 pm - 8:05 pm
DLH
-
DEN
4h 50m
1 stop
$402Delta
Wed, Feb 18 - Tue, Feb 24
United Airlines Logo
7:45 am - 2:37 pm
DEN
-
DLH
5h 52m
1 stop
United Airlines Logo
7:50 am - 2:48 pm
DLH
-
DEN
7h 58m
1 stop
$408United Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
9:20 pm - 10:29 am
DEN
-
DLH
12h 09m
1 stop
United Airlines Logo
6:10 pm - 11:37 pm
DLH
-
DEN
6h 27m
1 stop
$411United Airlines
Fri, May 15 - Fri, May 22

United Airlines flights from Colorado to Duluth

Our best United Airlines deals on Colorado to Duluth flight tickets
United Airlines
Apr 23
DEN6:00 amDenver Intl
7h 27m
1 stop
DLH2:27 pmDuluth Intl
Apr 26
DLH6:42 pmDuluth Intl
7h 16m
1 stop
DEN12:58 amDenver Intl
$258
United Airlines
Jul 8
DEN4:45 pmDenver Intl
6h 58m
1 stop
DLH12:43 amDuluth Intl
Jul 13
DLH6:10 pmDuluth Intl
7h 43m
1 stop
DEN12:53 amDenver Intl
$313
United Airlines
May 30
DEN6:00 amDenver Intl
7h 33m
1 stop
DLH2:33 pmDuluth Intl
Jun 3
DLH6:10 pmDuluth Intl
6h 27m
1 stop
DEN11:37 pmDenver Intl
$317

Delta flights from Colorado to Duluth

Our best Delta deals on Colorado to Duluth flight tickets
Delta
May 15
DEN6:44 pmDenver Intl
3h 54m
1 stop
DLH11:38 pmDuluth Intl
May 19
DLH4:20 pmDuluth Intl
4h 55m
1 stop
DEN8:15 pmDenver Intl
$290
Delta
May 12
DEN9:16 amDenver Intl
5h 03m
1 stop
DLH3:19 pmDuluth Intl
May 19
DLH4:20 pmDuluth Intl
4h 55m
1 stop
DEN8:15 pmDenver Intl
$339
Delta
Feb 10
DEN5:49 pmDenver Intl
5h 03m
1 stop
DLH11:52 pmDuluth Intl
Feb 14
DLH4:18 pmDuluth Intl
4h 47m
1 stop
DEN8:05 pmDenver Intl
$358

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 February 7, 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

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 4/23

6:00 am-2:27 pm

1 stop7h 27m

Duluth Intl

Mon 4/27

3:08 pm-10:05 pm

1 stop7h 57m

$258

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 5/15

6:44 pm-11:38 pm

1 stop3h 54m

Duluth Intl

Tue 5/19

5:10 am-8:03 am

1 stop3h 53m

$290

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 7/8

4:45 pm-12:43 am

1 stop6h 58m

Duluth Intl

Mon 7/13

6:10 pm-12:53 am

1 stop7h 43m

$313

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 5/30

6:00 am-2:33 pm

1 stop7h 33m

Duluth Intl

Wed 6/3

6:10 pm-11:37 pm

1 stop6h 27m

$317

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 4/18

6:00 am-2:27 pm

1 stop7h 27m

Duluth Intl

Tue 4/21

7:45 am-12:45 pm

1 stop6h 00m

$328

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 7/8

6:00 pm-12:43 am

1 stop5h 43m

Duluth Intl

Sun 7/12

6:10 pm-12:53 am

1 stop7h 43m

$341

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 5/26

6:00 am-10:57 am

1 stop3h 57m

Duluth Intl

Sun 5/31

5:10 am-8:03 am

1 stop3h 53m

$379

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 2/18

7:05 am-11:55 pm

2 stops15h 50m

Duluth Intl

Tue 2/24

4:15 pm-8:05 pm

1 stop4h 50m

$402

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 2/21

7:45 am-2:37 pm

1 stop5h 52m

Duluth Intl

Wed 2/25

7:50 am-2:48 pm

1 stop7h 58m

$408

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 5/15

9:20 pm-10:29 am

1 stop12h 09m

Duluth Intl

Fri 5/22

6:10 pm-11:37 pm

1 stop6h 27m

$411

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 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 Colorado during November instead. Flights to Duluth in November, while not as cheap as those in December, still average around $266.

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 35m

Direct flights

None
The fastest flight from Colorado to Duluth takes 3h 35m
There are no direct flights from Colorado to Duluth. There are no popular flight routes from Colorado to Duluth.
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?

  • 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
343 reviews
Search Sun Country Air flights
DeltaPriceFrom $173Free CancellationRating
7.9
8,172 reviews
Search Delta flights
United AirlinesPriceFrom $181Free CancellationRating
7.4
9,254 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
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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