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Duluth

$176+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DLH
Apr 25 — May 21
Sat 4/25
Sat 5/2
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 March 26, 2026.

This United Airlines deal was found by Cheapflights users on 3/24. 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.
Tue 4/216:00 am
DEN
-
DLH
1 stop7h 27m
United Airlines
Tue 4/2811:19 am
DLH
-
DEN
1 stop6h 10m
United Airlines
Deal found 3/24$266
This Delta deal was found by Cheapflights users on 3/21. 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.
Fri 5/291:20 pm
DEN
-
DLH
1 stop5h 11m
Delta
Sun 5/315:15 am
DLH
-
DEN
1 stop3h 46m
Delta
Deal found 3/21$318
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:20 pm
DEN
-
DLH
1 stop5h 46m
United Airlines
Mon 4/136:57 pm
DLH
-
DEN
1 stop6h 02m
United Airlines
Deal found 3/25$328
This Delta deal was found by Cheapflights users on 3/22. 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 6/166:00 am
DEN
-
DLH
1 stop4h 07m
Delta
Sat 6/205:05 am
DLH
-
DEN
1 stop3h 58m
Delta
Deal found 3/22$335
This Delta deal was found by Cheapflights users on 3/23. 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.
Fri 4/105:06 pm
DEN
-
DLH
1 stop4h 41m
Delta
Tue 4/1412:47 pm
DLH
-
DEN
1 stop3h 49m
Delta
Deal found 3/23$340
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:17 am
DEN
-
DLH
1 stop5h 16m
United Airlines
Thu 10/86:10 pm
DLH
-
DEN
1 stop7h 48m
United Airlines
Deal found 3/23$345
This Delta deal was found by Cheapflights users on 3/25. 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.
Fri 9/116:55 pm
DEN
-
DLH
1 stop3h 43m
Delta
Wed 9/164:20 pm
DLH
-
DEN
1 stop7h 09m
Delta
Deal found 3/25$346
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Tue 4/286:00 am
DEN
-
DLH
1 stop7h 27m
United Airlines
Sat 5/22:57 pm
DLH
-
DEN
1 stop7h 11m
United Airlines
Deal found 3/24$347
This Delta deal was found by Cheapflights users on 3/22. 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 6/236:00 am
DEN
-
DLH
1 stop4h 08m
Delta
Wed 6/245:05 am
DLH
-
DEN
1 stop4h 09m
Delta
Deal found 3/22$352
This Delta deal was found by Cheapflights users on 3/22. 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.
Sun 6/2112:12 pm
DEN
-
DLH
1 stop4h 49m
Delta
Wed 6/245:05 am
DLH
-
DEN
1 stop4h 09m
Delta
Deal found 3/22$354
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Thu 4/304:45 pm
DEN
-
DLH
1 stop6h 57m
United Airlines
Mon 5/116:44 pm
DLH
-
DEN
1 stop6h 06m
United Airlines
Deal found 3/24$355
This United Airlines deal was found by Cheapflights users on 3/22. 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 5/2711:31 am
COS
-
DLH
2 stops10h 37m
United Airlines
Wed 8/125:00 am
DLH
-
COS
1 stop6h 59m
United Airlines
Deal found 3/22$404

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 March 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$266
(United Airlines)

One-way from

$176
(Delta)

Popular in

January

Cheapest in

March

Average price

$153
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. 10% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 26, 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

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 4/28

6:00 am-2:27 pm

1 stop7h 27m

Duluth Intl

Sat 5/2

2:57 pm-9:08 pm

1 stop7h 11m

$347
Quickest round-trip

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 4/10

6:12 pm-10:47 pm

1 stop3h 35m

Duluth Intl

Tue 4/14

12:47 pm-3:36 pm

1 stop3h 49m

$383

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 6/24

4:45 pm-11:08 pm

1 stop5h 23m

Duluth Intl

Wed 7/1

6:25 pm-11:49 pm

1 stop6h 24m

$436

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 6/8

12:12 pm-7:24 pm

1 stop6h 12m

Duluth Intl

Fri 6/12

8:00 am-12:10 pm

1 stop5h 10m

$472

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 7/10

12:11 pm-7:26 pm

1 stop6h 15m

Duluth Intl

Sun 7/12

5:05 am-8:06 am

1 stop4h 01m

$508

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 4/10

5:44 pm-12:29 am

1 stop5h 45m

Duluth Intl

Tue 4/14

5:00 am-6:25 pm

2 stops14h 25m

$514

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 6/19

9:05 pm-10:43 am

1 stop12h 38m

Duluth Intl

Mon 6/22

6:10 pm-12:53 am

1 stop7h 43m

$525

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Tue 5/26

8:15 am-10:44 pm

2 stops13h 29m

Duluth Intl

Sat 8/8

5:05 am-10:28 am

1 stop6h 23m

$686

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Sun 5/24

5:30 am-11:08 pm

2 stops16h 38m

Duluth Intl

Tue 8/11

5:00 am-10:59 am

1 stop6h 59m

$692

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Fri 5/29

3:42 pm-2:28 pm

2 stops21h 46m

Duluth Intl

Mon 6/1

6:10 pm-11:10 am

1 stop18h 00m

$711

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 22 resultsSorted by cheapest first
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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

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

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 5h 11m. Delta provides one of the quickest options available for as low as $318. 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.

See more FAQs

Traveling to a place near Duluth?

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

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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 March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$68Average$176FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$181Average$574FlexibilityNo cancel feeOn-time69%
DeltaCheapest$214Average$378FlexibilityNo cancel feeOn-timeN/A

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