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Duluth

$244+ Cheap flights from Colorado to Duluth (DLH)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DLH
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Colorado to Duluth

Cheapest flights from Colorado to Duluth
Explore the most affordable flight options available from Colorado to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Delta deal was found by Cheapflights users on 1/28. 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 5/156:55 pm
DEN
-
DLH
1 stop3h 43m
Delta
Tue 5/194:20 pm
DLH
-
DEN
1 stop4h 38m
Delta
Deal found 1/28$278
This Delta deal was found by Cheapflights users on 1/28. 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.
Wed 3/256:12 pm
DEN
-
DLH
1 stop3h 35m
Delta
Wed 4/112:37 pm
DLH
-
DEN
1 stop4h 23m
Delta
Deal found 1/28$327
This United Airlines deal was found by Cheapflights users on 1/28. 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 4/186:00 am
DEN
-
DLH
1 stop7h 27m
United Airlines
Tue 4/217:45 am
DLH
-
DEN
1 stop8h 06m
United Airlines
Deal found 1/28$351
This Delta deal was found by Cheapflights users on 1/28. 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 8/16:10 am
DEN
-
DLH
1 stop3h 47m
Delta
Sat 8/85:10 am
DLH
-
DEN
1 stop4h 09m
Delta
Deal found 1/28$358
This Delta deal was found by Cheapflights users on 1/27. 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.
Wed 8/126:10 am
DEN
-
DLH
1 stop3h 47m
Delta
Tue 8/184:20 pm
DLH
-
DEN
1 stop7h 09m
Delta
Deal found 1/27$368
This Delta deal was found by Cheapflights users on 1/29. 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 7/106:55 pm
DEN
-
DLH
1 stop3h 43m
Delta
Sun 7/125:10 am
DLH
-
DEN
1 stop4h 09m
Delta
Deal found 1/29$418
This Delta deal was found by Cheapflights users on 1/27. 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 7/186:10 am
DEN
-
DLH
1 stop3h 47m
Delta
Sat 7/255:10 am
DLH
-
DEN
1 stop4h 09m
Delta
Deal found 1/27$428
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/252:10 pm
DEN
-
DLH
2 stops19h 33m
United Airlines
Tue 3/313:08 pm
DLH
-
DEN
1 stop7h 57m
United Airlines
Deal found 1/27$437
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/185:05 pm
COS
-
DLH
2 stops16h 38m
United Airlines
Sat 2/213:19 pm
DLH
-
COS
1 stop20h 36m
United Airlines
Deal found 1/28$532
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/31:25 pm
COS
-
DLH
2 stops7h 34m
United Airlines
Sat 2/73:05 pm
DLH
-
COS
1 stop20h 57m
United Airlines
Deal found 1/28$603

Find flight deals from Colorado to Duluth

Keep the following information in mind while searching for Colorado to Duluth flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$278
(Delta)

One-way from

$244
(Delta)

Popular in

January

Cheapest in

December

Average price

$513
Provider with most accurate pricing for Denver Intl-Duluth Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Duluth Intl flights.
Search Deals
From Colorado to Duluth Intl
Search Deals
One-way flight from Colorado to Duluth Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Colorado to Duluth that are best for you.

Fly from

Colorado

Fly to

Duluth

Route

Depart

Return

Price

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 5/15

6:55 pm-11:38 pm

1 stop3h 43m

Duluth Intl

Tue 5/19

4:20 pm-7:58 pm

1 stop4h 38m

$278

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 5/15

6:55 pm-11:38 pm

1 stop3h 43m

Duluth Intl

Sat 5/23

4:20 pm-7:58 pm

1 stop4h 38m

$290

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 3/25

5:06 pm-10:47 pm

1 stop4h 41m

Duluth Intl

Tue 3/31

12:37 pm-4:00 pm

1 stop4h 23m

$290

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 3/25

6:12 pm-10:47 pm

1 stop3h 35m

Duluth Intl

Wed 4/1

12:37 pm-4:00 pm

1 stop4h 23m

$327

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-2:51 pm

1 stop8h 06m

$351

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 7/10

6:55 pm-11:38 pm

1 stop3h 43m

Duluth Intl

Sun 7/12

5:10 am-8:19 am

1 stop4h 09m

$418

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 7/25

6:10 am-10:57 am

1 stop3h 47m

Duluth Intl

Tue 7/28

4:20 pm-10:29 pm

1 stop7h 09m

$418

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Wed 2/18

5:05 pm-10:43 am

2 stops16h 38m

Duluth Intl

Sat 2/21

3:19 pm-10:55 am

1 stop20h 36m

$532

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 5/20

6:10 am-10:57 am

1 stop3h 47m

$244

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 2/23

7:23 pm-10:43 am

1 stop14h 20m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 11 results
1
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Best time to book a flight from Colorado to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Colorado 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 Colorado to Duluth

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

Currently, February is the cheapest month in which you can book a flight from Colorado to Duluth (average of $65). Flying from Colorado to Duluth in October is currently the most expensive (average of $251). 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.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Duluth. 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 into for flights to Duluth from Colorado?

    Most people fly into Duluth Intl (DLH) if they book a flight to Duluth from Colorado. Duluth Intl is conveniently located just 5.8 mi from Duluth’s city center.

  • How long is the flight from Colorado to Duluth?

    A quick flight from Colorado to Duluth can take about 3h 43m. Delta provides one of the quickest options available for as low as $278. Colorado and Duluth are separated by a distance of 789 mi. 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 Colorado to Duluth that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado to Duluth 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 Colorado to Duluth?

    Currently, February is the cheapest month in which you can book a flight from Colorado to Duluth (average of $65). Flying from Colorado to Duluth in October is currently the most expensive (average of $251). 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

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior

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Top 3 airlines flying from Colorado to Duluth

Discover the top 3 airlines that operate flights from Colorado to Duluth. 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$68Average$176FlexibilityNo cancel feeOn-time83%
DeltaCheapest$173Average$375FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$181Average$574FlexibilityNo cancel feeOn-time69%

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