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Duluth

$248+ Cheap flights from Colorado to Duluth (DLH)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DLH
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find 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 October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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 11/117:46 amDEN - DLH
1 stop5h 45mUnited Airlines
Sat 11/153:06 pmDLH - DEN
1 stop5h 58mUnited Airlines
Deal found 10/26$248
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 11/125:45 amDEN - DLH
1 stop4h 36mDelta
Wed 11/195:10 amDLH - DEN
1 stop5h 53mDelta
Deal found 10/29$253
This Delta deal was found by Cheapflights users on 10/28. 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 11/124:18 pmDEN - DLH
1 stop6h 32mDelta
Sun 11/165:10 amDLH - DEN
1 stop5h 53mDelta
Deal found 10/28$268
This Delta deal was found by Cheapflights users on 10/29. 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.
Mon 11/105:45 amDEN - DLH
1 stop4h 36mDelta
Wed 11/195:10 amDLH - DEN
1 stop5h 53mDelta
Deal found 10/29$283
This Delta deal was found by Cheapflights users on 10/29. 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.
Mon 11/106:59 pmDEN - DLH
1 stop3h 51mDelta
Tue 11/184:18 pmDLH - DEN
1 stop4h 13mDelta
Deal found 10/29$298
This Delta deal was found by Cheapflights users on 10/28. 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 12/108:10 amCOS - DLH
2 stops10h 25mDelta
Sat 12/1312:01 pmDLH - COS
2 stops11h 24mDelta
Deal found 10/28$318
This Delta deal was found by Cheapflights users on 10/26. 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 10/316:05 amDEN - DLH
1 stop4h 17mDelta
Sun 11/27:50 amDLH - DEN
1 stop5h 49mDelta
Deal found 10/26$323
This Delta deal was found by Cheapflights users on 10/29. 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.
Thu 11/136:59 pmDEN - DLH
1 stop3h 51mDelta
Thu 11/205:10 amDLH - DEN
1 stop5h 53mDelta
Deal found 10/29$327
This Delta deal was found by Cheapflights users on 10/26. 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 11/76:55 pmDEN - DLH
1 stop3h 47mDelta
Sun 11/95:10 amDLH - DEN
1 stop5h 53mDelta
Deal found 10/26$328
This Delta deal was found by Cheapflights users on 10/27. 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 10/294:16 pmDEN - DLH
1 stop6h 26mDelta
Sun 11/24:10 pmDLH - DEN
1 stop4h 20mDelta
Deal found 10/27$338
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/1012:32 pmCOS - DLH
2 stops24h 50mUnited Airlines
Sat 12/132:57 pmDLH - COS
1 stop21h 29mUnited Airlines
Deal found 10/28$537

Cheap flight deals from Colorado to Duluth

Keep the following information in mind while searching for Colorado to Duluth flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$248
(United Airlines)

Popular in

September

Cheapest in

August

Average price

$350
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
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 29, 2025.
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

Tue 11/11

7:46 am-2:31 pm

1 stop5h 45m

Duluth Intl

Sat 11/15

3:06 pm-8:04 pm

1 stop5h 58m

$248

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 11/12

5:45 am-11:21 am

1 stop4h 36m

Duluth Intl

Thu 11/20

4:18 pm-7:31 pm

1 stop4h 13m

$253

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 11/12

5:45 am-11:21 am

1 stop4h 36m

Duluth Intl

Wed 11/19

5:10 am-10:03 am

1 stop5h 53m

$253

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 11/12

4:18 pm-11:50 pm

1 stop6h 32m

Duluth Intl

Sun 11/16

5:10 am-10:03 am

1 stop5h 53m

$268

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 11/11

4:18 pm-11:50 pm

1 stop6h 32m

Duluth Intl

Sat 11/15

12:01 pm-3:27 pm

1 stop4h 26m

$268

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 11/11

6:59 pm-11:50 pm

1 stop3h 51m

Duluth Intl

Wed 11/19

12:01 pm-3:39 pm

1 stop4h 38m

$283

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 11/10

5:45 am-11:21 am

1 stop4h 36m

Duluth Intl

Wed 11/19

5:10 am-10:03 am

1 stop5h 53m

$283

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 11/10

5:45 am-11:21 am

1 stop4h 36m

Duluth Intl

Thu 11/20

5:10 am-10:03 am

1 stop5h 53m

$283

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 11/10

6:59 pm-11:50 pm

1 stop3h 51m

Duluth Intl

Tue 11/18

4:18 pm-7:31 pm

1 stop4h 13m

$298

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Wed 12/10

8:10 am-7:35 pm

2 stops10h 25m

Duluth Intl

Sat 12/13

12:01 pm-10:25 pm

2 stops11h 24m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 13 results
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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 $66). Flying from Colorado to Duluth in April is currently the most expensive (average of $253). 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.

What is the cheapest time of day to fly from CO to DLH?

Find hourly flight availability from Colorado to Duluth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Colorado to Duluth in the evening. If you’re flexible enough to do this you can expect to save up to 69% on your trip compared to booking a flight in the morning.

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 4h 36m. United Airlines provides one of the quickest options available for as low as $253. 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 $66). Flying from Colorado to Duluth in April is currently the most expensive (average of $253). 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$68Average$226FlexibilityNo cancel feeOn-time83%
DeltaCheapest$238Average$422FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$298Average$483FlexibilityNo cancel feeOn-time69%

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