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$146+ Cheap flights from Duluth (DLH) to Colorado

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — DEN
Mar 24 — Mar 311
Tue 3/24
Tue 3/31
1 adult, Economy
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Cheap flight deals from Duluth to Colorado

Cheapest flights from Duluth to Colorado
Explore the most affordable flight options available from Duluth to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2026.

This Delta deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:32 pm
DLH
-
DEN
1 stop4h 19m
Delta
Wed 4/86:12 pm
DEN
-
DLH
1 stop3h 35m
Delta
Deal found 2/21$256
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:10 pm
DLH
-
DEN
1 stop6h 08m
United Airlines
Wed 10/284:45 pm
DEN
-
DLH
1 stop6h 58m
United Airlines
Deal found 2/19$258
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/412:37 pm
DLH
-
DEN
1 stop4h 26m
Delta
Thu 4/96:20 am
DEN
-
DLH
1 stop4h 36m
Delta
Deal found 2/20$292
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/305:10 am
DLH
-
DEN
1 stop4h 06m
Delta
Tue 6/26:00 am
DEN
-
DLH
1 stop3h 57m
Delta
Deal found 2/20$294
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/266:43 pm
DLH
-
DEN
1 stop5h 47m
United Airlines
Wed 4/16:00 am
DEN
-
DLH
1 stop7h 27m
United Airlines
Deal found 2/21$308
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:42 pm
DLH
-
DEN
1 stop7h 16m
United Airlines
Wed 4/223:15 pm
DEN
-
DLH
1 stop5h 46m
United Airlines
Deal found 2/19$322
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:29 pm
DLH
-
DEN
1 stop6h 06m
United Airlines
Sun 5/36:00 am
DEN
-
DLH
1 stop7h 22m
United Airlines
Deal found 2/21$327
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:10 am
DLH
-
DEN
1 stop4h 09m
Delta
Sat 8/86:10 am
DEN
-
DLH
1 stop3h 47m
Delta
Deal found 2/19$338
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:43 pm
DLH
-
DEN
1 stop5h 47m
United Airlines
Tue 3/103:10 pm
DEN
-
DLH
1 stop5h 44m
United Airlines
Deal found 2/18$363
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:10 am
DLH
-
DEN
1 stop4h 09m
Delta
Tue 8/116:10 am
DEN
-
DLH
1 stop3h 47m
Delta
Deal found 2/19$378

Find flight deals from Duluth to Colorado

Keep the following information in mind while searching for Duluth to Colorado flight deals. Data was last updated February 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$256
(Delta)

One-way from

$203
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$367
Provider with most accurate pricing for Duluth Intl-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Duluth Intl-Denver Intl flights.
Search Deals
From Duluth Intl to Colorado
Search Deals
One-way flight from Duluth Intl to Colorado
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Duluth to Colorado 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, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2026.
Use the filters below to find and compare flights from Duluth to Colorado that are best for you.

Fly from

Duluth

Fly to

Colorado

Route

Depart

Return

Price

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 4/4

8:04 am-2:08 pm

1 stop7h 04m

Denver Intl

Wed 4/8

6:12 pm-10:47 pm

1 stop3h 35m

$264

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 4/4

12:37 pm-4:03 pm

1 stop4h 26m

Denver Intl

Thu 4/9

6:20 am-11:56 am

1 stop4h 36m

$292

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Tue 8/4

5:10 am-8:19 am

1 stop4h 09m

Denver Intl

Sat 8/8

6:10 am-10:57 am

1 stop3h 47m

$338

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 3/6

6:43 pm-11:30 pm

1 stop5h 47m

Denver Intl

Tue 3/10

3:10 pm-9:54 pm

1 stop5h 44m

$363

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 7/3

6:10 pm-11:37 pm

1 stop6h 27m

Denver Intl

Sun 7/5

8:15 am-5:34 pm

1 stop8h 19m

$397

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Tue 3/17

12:37 pm-4:03 pm

1 stop4h 26m

Denver Intl

Fri 3/20

6:20 am-11:56 am

1 stop4h 36m

$432

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 8/7

5:10 am-8:19 am

1 stop4h 09m

Denver Intl

Mon 8/10

6:55 pm-11:38 pm

1 stop3h 43m

$448

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 4/4

3:08 pm-10:05 pm

1 stop7h 57m

Denver Intl

Thu 4/9

11:15 am-12:29 am

2 stops12h 14m

$468

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Tue 6/2

5:10 am-8:03 am

1 stop3h 53m

$146

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 4/24

6:42 pm-12:58 am

1 stop7h 16m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 12 results
1
2

Best time to book a flight from Duluth to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Duluth with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Duluth to Colorado

What is the cheapest month to book a flight from Duluth to Colorado?

Currently, December is the cheapest month in which you can book a flight from Duluth to Colorado (average of $92). Flying from Duluth to Colorado in November is currently the most expensive (average of $273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated February 22, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and Sun Country Air from Duluth to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,233 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,233 reviews
Delta
7.9
Good
8,233 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,339 reviews
Delta
7.9
Good
8,233 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Sun Country Air
6.8
Okay
341 reviews
Delta
7.9
Good
8,233 reviews

Boarding

8.1

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Duluth to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Duluth to Colorado?

    Duluth Intl (DLH) is the airport you will fly out of if you book a flight from Duluth to Colorado. It is only a 5.8 mi journey to Duluth Intl (DLH) from Duluth’s city center.

  • How long is the flight from Duluth to Colorado?

    For as low as $363, Delta can have you in Colorado from Duluth in 5h 47m. There are 789 mi between Duluth and Colorado. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Duluth to Colorado that include hotel bookings?

    Yes. In addition to deals on Duluth to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Duluth to Colorado?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duluth to Colorado.

  • Can I find deals for business class flights from Duluth to Colorado?

    Yes. Cheapflights offers flight deals from Duluth to Colorado by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Duluth to Colorado?

    Currently, December is the cheapest month in which you can book a flight from Duluth to Colorado (average of $92). Flying from Duluth to Colorado in November is currently the most expensive (average of $273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Duluth to Colorado

Discover the top 3 airlines that operate flights from Duluth to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$49Average$191FlexibilityNo cancel feeOn-time83%
DeltaCheapest$123Average$327FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$238Average$397FlexibilityNo cancel feeOn-time69%

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