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Duluth

$178+ Cheap flights from Denver to Duluth (DEN - 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DLH
Jul 24 — Jul 311
Fri 7/24
Fri 7/31
1 adult, Economy
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Cheap flight deals from Denver to Duluth

Cheapest flights from Denver to Duluth
Explore the most affordable flight options available from Denver to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 24, 2026.

This United Airlines deal was found by Cheapflights users on 6/22. 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 8/263:50 pm
DEN
-
DLH
1 stop6h 32m
United Airlines
Mon 8/316:23 pm
DLH
-
DEN
1 stop6h 30m
United Airlines
Deal found 6/22$298
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sat 8/153:50 pm
DEN
-
DLH
1 stop6h 32m
United Airlines
Wed 8/196:23 pm
DLH
-
DEN
1 stop6h 30m
United Airlines
Deal found 6/22$309
This Delta deal was found by Cheapflights users on 6/24. 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.
Wed 9/305:45 pm
DEN
-
DLH
1 stop3h 50m
Delta
Wed 10/74:15 pm
DLH
-
DEN
1 stop4h 45m
Delta
Deal found 6/24$314
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Fri 8/144:40 pm
DEN
-
DLH
1 stop5h 42m
United Airlines
Tue 8/186:23 pm
DLH
-
DEN
1 stop6h 31m
United Airlines
Deal found 6/23$324
This Delta deal was found by Cheapflights users on 6/24. 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 7/176:00 am
DEN
-
DLH
1 stop4h 04m
Delta
Mon 7/2011:50 am
DLH
-
DEN
1 stop4h 40m
Delta
Deal found 6/24$356
This Delta deal was found by Cheapflights users on 6/19. 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.
Fri 7/179:19 am
DEN
-
DLH
1 stop5h 23m
Delta
Wed 7/225:00 am
DLH
-
DEN
1 stop4h 06m
Delta
Deal found 6/19$373
This Delta deal was found by Cheapflights users on 6/19. 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 6/2712:12 pm
DEN
-
DLH
1 stop6h 12m
Delta
Tue 6/305:00 am
DLH
-
DEN
1 stop4h 14m
Delta
Deal found 6/19$388
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sat 8/153:50 pm
DEN
-
DLH
1 stop6h 32m
United Airlines
Sat 8/227:45 am
DLH
-
DEN
1 stop7h 46m
United Airlines
Deal found 6/22$393
This Delta deal was found by Cheapflights users on 6/21. 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 6/2612:12 pm
DEN
-
DLH
1 stop6h 12m
Delta
Mon 6/295:00 am
DLH
-
DEN
1 stop6h 05m
Delta
Deal found 6/21$403
This Delta deal was found by Cheapflights users on 6/21. 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 7/246:00 am
DEN
-
DLH
1 stop4h 04m
Delta
Tue 7/285:00 am
DLH
-
DEN
1 stop4h 06m
Delta
Deal found 6/21$407
This Delta deal was found by Cheapflights users on 6/23. 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.
Sat 7/44:05 pm
DEN
-
DLH
1 stop5h 45m
Delta
Sun 7/55:00 am
DLH
-
DEN
1 stop4h 14m
Delta
Deal found 6/23$410
This Delta deal was found by Cheapflights users on 6/19. 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.
Fri 7/179:19 am
DEN
-
DLH
1 stop5h 23m
Delta
Sun 7/198:00 am
DLH
-
DEN
1 stop5h 05m
Delta
Deal found 6/19$418

Find flight deals from Denver to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Duluth (DLH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$298
(United Airlines)

One-way from

$178
(Delta)

Popular in

August

Cheapest in

December

Average price

$583
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 Denver Intl to Duluth Intl
Search Deals
One-way flight from Denver Intl to Duluth Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 June 24, 2026.
Use the filters below to find and compare flights from Denver to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 7/17

6:00 am-11:04 am

1 stop4h 04m

Duluth Intl

Mon 7/20

11:50 am-3:30 pm

1 stop4h 40m

$356

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 7/17

9:19 am-3:42 pm

1 stop5h 23m

Duluth Intl

Wed 7/22

5:00 am-8:06 am

1 stop4h 06m

$373

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 7/17

9:19 am-3:42 pm

1 stop5h 23m

Duluth Intl

Sun 7/19

8:00 am-12:05 pm

1 stop5h 05m

$418

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 7/17

9:19 am-3:42 pm

1 stop5h 23m

Duluth Intl

Tue 7/21

8:00 am-8:06 am

1 stop25h 06m

$476

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 10/27

8:34 pm-10:44 am

1 stop13h 10m

Duluth Intl

Sat 10/31

7:35 am-12:24 pm

1 stop5h 49m

$480

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 8/26

2:50 pm-11:22 pm

1 stop7h 32m

Duluth Intl

Wed 9/2

6:23 pm-10:27 am

2 stops17h 04m

$501

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 9/18

5:45 pm-10:35 pm

1 stop3h 50m

Duluth Intl

Sun 9/20

5:15 am-10:03 am

1 stop5h 48m

$516

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 7/16

6:00 am-7:25 pm

1 stop12h 25m

Duluth Intl

Tue 7/21

8:00 am-8:06 am

1 stop25h 06m

$524

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 10/8

6:00 am-2:29 pm

1 stop7h 29m

Duluth Intl

Sun 10/11

7:45 am-7:39 am

1 stop24h 54m

$525

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 8/14

9:50 am-11:22 pm

2 stops12h 32m

Duluth Intl

Tue 8/18

6:23 pm-11:54 pm

1 stop6h 31m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Denver to Duluth

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Duluth in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Duluth flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Duluth flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Duluth flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Duluth flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Duluth flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Duluth

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

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

Reviews of airlines servicing Duluth

Get insights into the airlines that provide service to Duluth. 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 Duluth. Reviews last updated June 24, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andSun Country Air from Denver to Duluth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,432 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.
Delta
7.8
Good
8,432 reviews
Delta
7.8
Good
8,432 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.
United Airlines
7.4
Good
9,886 reviews
Delta
7.8
Good
8,432 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.
Sun Country Air
6.8
Okay
329 reviews
Delta
7.8
Good
8,432 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Marie Antonette,Sep 2023

CDG - MSP

The actual flight out of MSP was great. However, it was delayed by an hour and we didn’t have anyone at our gate to provide any information until boarding.

Related info for your journey

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

  • How long is the flight from Denver to Duluth?

    There are many flights that can get you from Denver to Duluth in 4h 04m. Fly via Delta or United Airlines to get the fastest option. Airlines will cover a distance of 789 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Denver to Duluth round-trip?

    Flying on Sun Country Air is currently your cheapest option to Duluth, with prices starting at $68. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $238 and $258, respectively. Sun Country Air is currently priced 84% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver 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 Denver to Duluth

Discover the top 3 airlines that operate flights from Denver 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 June 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$68Average$256FlexibilityNo cancel feeOn-time83%
DeltaCheapest$238Average$484FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$571FlexibilityNo cancel feeOn-time69%

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