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Colorado

$195+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — DEN
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
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 July 26, 2026.

This United Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/126:23 pm
DLH
-
DEN
1 stop6h 30m
United Airlines
Sat 8/153:50 pm
DEN
-
DLH
1 stop6h 32m
United Airlines
Deal found 7/21$308
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/46:23 pm
DLH
-
DEN
1 stop6h 30m
United Airlines
Sat 9/122:50 pm
DEN
-
DLH
1 stop7h 20m
United Airlines
Deal found 7/24$319
This Delta deal was found by Cheapflights users on 7/24. 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.
Fri 8/214:11 pm
DLH
-
DEN
1 stop4h 40m
Delta
Fri 8/286:00 am
DEN
-
DLH
1 stop4h 01m
Delta
Deal found 7/24$332
This Delta deal was found by Cheapflights users on 7/25. 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.
Thu 8/2711:41 am
DLH
-
DEN
1 stop4h 42m
Delta
Mon 8/316:00 am
DEN
-
DLH
1 stop4h 01m
Delta
Deal found 7/25$365
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 8/116:23 pm
DLH
-
DEN
1 stop6h 31m
United Airlines
Tue 8/183:50 pm
DEN
-
DLH
1 stop6h 32m
United Airlines
Deal found 7/21$378
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 10/247:45 am
DLH
-
DEN
1 stop8h 32m
United Airlines
Wed 10/287:45 am
DEN
-
DLH
1 stop5h 48m
United Airlines
Deal found 7/21$388
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Mon 8/246:23 pm
DLH
-
DEN
1 stop6h 30m
United Airlines
Tue 8/253:50 pm
DEN
-
DLH
1 stop6h 32m
United Airlines
Deal found 7/24$400
This Delta deal was found by Cheapflights users on 7/23. 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 9/294:11 pm
DLH
-
DEN
1 stop4h 54m
Delta
Fri 10/28:45 am
DEN
-
DLH
1 stop5h 44m
Delta
Deal found 7/23$408
This Delta deal was found by Cheapflights users on 7/25. 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 8/155:15 am
DLH
-
DEN
2 stops15h 46m
Delta
Sat 8/226:00 am
DEN
-
DLH
1 stop4h 01m
Delta
Deal found 7/25$420
This Delta deal was found by Cheapflights users on 7/25. 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 7/254:25 pm
DLH
-
DEN
1 stop4h 02m
Delta
Sun 7/266:00 am
DEN
-
DLH
1 stop4h 04m
Delta
Deal found 7/25$428

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 July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$308
(United Airlines)

One-way from

$195
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$368
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. 22% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 26, 2026.
Use the filters below to find and compare flights from Duluth to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 8/15

6:23 pm-11:23 pm

1 stop6h 00m

Denver Intl

Sat 8/22

2:50 pm-11:22 pm

1 stop7h 32m

$308

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Wed 8/12

6:23 pm-11:53 pm

1 stop6h 30m

Denver Intl

Sat 8/15

3:50 pm-11:22 pm

1 stop6h 32m

$308

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Tue 8/11

6:23 pm-11:54 pm

1 stop6h 31m

Denver Intl

Tue 8/18

3:50 pm-11:22 pm

1 stop6h 32m

$378

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 10/24

7:45 am-3:17 pm

1 stop8h 32m

Denver Intl

Wed 10/28

7:45 am-2:30 pm

1 stop5h 45m

$388
Quickest round-trip

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Tue 9/29

4:11 pm-8:05 pm

1 stop4h 54m

Denver Intl

Fri 10/2

8:45 am-3:29 pm

1 stop5h 44m

$413

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Tue 9/1

6:23 pm-11:54 pm

1 stop6h 31m

Denver Intl

Thu 9/3

3:50 pm-11:22 pm

1 stop6h 32m

$477

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 9/26

3:10 pm-9:44 pm

1 stop7h 34m

Denver Intl

Tue 9/29

9:55 am-11:22 pm

2 stops12h 27m

$504

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Thu 8/6

6:25 pm-11:48 pm

1 stop6h 23m

Denver Intl

Fri 8/14

4:40 pm-11:22 pm

1 stop5h 42m

$539
Cheapest one-way

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 8/22

7:45 am-3:17 pm

1 stop8h 32m

$195

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sun 8/30

5:15 am-9:59 am

1 stop5h 44m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 17 resultsSorted by cheapest first
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, September is the cheapest month in which you can book a flight from Duluth to Colorado (average of $153). Flying from Duluth to Colorado in June is currently the most expensive (average of $662). 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.

How much does it cost to fly round-trip from Duluth to Colorado?

Airfare is below average for this route at the moment.
Duluth to Colorado flights typically cost between $350 and $424 in August.
The cheapest round-trip price found within the last 5 days was $308 on United Airlines (Aug 12-Aug 15).

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 July 26, 2026.
Get a feel of what it's like to fly with Delta and United Airlines 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
7.8
Good
8,487 reviews

Overall

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
Delta
7.8
Good
8,487 reviews
Delta
7.8
Good
8,487 reviews

Overall

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know
United Airlines
7.4
Good
10,038 reviews
Delta
7.8
Good
8,487 reviews

Overall

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

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 $308, United Airlines can have you in Colorado from Duluth in 6h. There are 789 mi between Duluth and Colorado.

  • 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, September is the cheapest month in which you can book a flight from Duluth to Colorado (average of $153). Flying from Duluth to Colorado in June is currently the most expensive (average of $662). 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 2 airlines flying from Duluth to Colorado

Discover the top 2 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 July 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$123Average$347FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$266Average$383FlexibilityNo cancel feeOn-time69%

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