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$193+ Cheap flights from Duluth to Denver (DLH - DEN)

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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — DEN
Aug 13 — Aug 201
Thu 8/13
Thu 8/20
1 adult, Economy
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Cheap flight deals from Duluth to Denver

Cheapest flights from Duluth to Denver
Explore the most affordable flight options available from Duluth to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2026.

This United Airlines deal was found by Cheapflights users on 7/9. 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 9/123:50 pm
DEN
-
DLH
1 stop6h 20m
United Airlines
Deal found 7/9$326
This Delta deal was found by Cheapflights users on 7/10. 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 10/2912:30 pm
DLH
-
DEN
1 stop4h 19m
Delta
Sun 11/16:00 am
DEN
-
DLH
1 stop4h 40m
Delta
Deal found 7/10$358
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/56:25 pm
DLH
-
DEN
1 stop6h 23m
United Airlines
Tue 8/114:40 pm
DEN
-
DLH
1 stop5h 42m
United Airlines
Deal found 7/13$363
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/196:23 pm
DLH
-
DEN
1 stop6h 30m
United Airlines
Mon 8/244:40 pm
DEN
-
DLH
1 stop5h 42m
United Airlines
Deal found 7/9$364
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/46:25 pm
DLH
-
DEN
1 stop6h 23m
United Airlines
Tue 8/182:50 pm
DEN
-
DLH
1 stop7h 32m
United Airlines
Deal found 7/9$370
This Delta deal was found by Cheapflights users on 7/9. 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 7/225:00 am
DLH
-
DEN
1 stop4h 06m
Delta
Sat 7/254:08 pm
DEN
-
DLH
1 stop5h 41m
Delta
Deal found 7/9$375
This United Airlines deal was found by Cheapflights users on 7/12. 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 10/313:14 pm
DLH
-
DEN
1 stop8h 08m
United Airlines
Wed 11/44:45 pm
DEN
-
DLH
1 stop5h 19m
United Airlines
Deal found 7/12$378
This Delta deal was found by Cheapflights users on 7/9. 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 10/115:14 am
DLH
-
DEN
1 stop5h 43m
Delta
Wed 10/141:35 pm
DEN
-
DLH
1 stop4h 46m
Delta
Deal found 7/9$395
This Delta deal was found by Cheapflights users on 7/10. 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 7/225:00 am
DLH
-
DEN
1 stop4h 06m
Delta
Sun 7/266:00 am
DEN
-
DLH
1 stop4h 04m
Delta
Deal found 7/10$397
This Delta deal was found by Cheapflights users on 7/10. 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 7/225:00 am
DLH
-
DEN
1 stop4h 06m
Delta
Sun 8/26:00 am
DEN
-
DLH
1 stop4h 04m
Delta
Deal found 7/10$405
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/116:27 pm
DLH
-
DEN
1 stop6h 27m
United Airlines
Sun 9/135:30 am
DEN
-
DLH
1 stop7h 59m
United Airlines
Deal found 7/13$423
This Delta deal was found by Cheapflights users on 7/10. 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 7/225:00 am
DLH
-
DEN
1 stop4h 06m
Delta
Sat 8/16:00 am
DEN
-
DLH
1 stop15h 49m
Delta
Deal found 7/10$425

Find flight deals from Duluth to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Duluth (DLH) to Denver (DEN). 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 July 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$326
(United Airlines)

One-way from

$193
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$370
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 Denver Intl
Search Deals
One-way flight from Duluth Intl to Denver Intl
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% 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 Denver 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 14, 2026.
Use the filters below to find and compare flights from Duluth to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sat 10/31

3:14 pm-10:22 pm

1 stop8h 08m

Denver Intl

Wed 11/4

4:45 pm-11:04 pm

1 stop5h 19m

$378
Quickest round-trip

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Mon 10/12

5:14 am-9:57 am

1 stop5h 43m

Denver Intl

Wed 10/14

11:02 am-3:41 pm

1 stop3h 39m

$437

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 9/11

4:11 pm-8:05 pm

1 stop4h 54m

Denver Intl

Sun 9/13

8:45 am-3:29 pm

1 stop5h 44m

$446

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 8/7

6:25 pm-11:48 pm

1 stop6h 23m

Denver Intl

Fri 8/14

4:40 pm-11:22 pm

1 stop5h 42m

$479

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Thu 8/20

6:23 pm-11:53 pm

1 stop6h 30m

Denver Intl

Sun 8/23

8:31 pm-11:22 pm

1 stop25h 51m

$510

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Thu 7/30

11:50 am-10:44 pm

2 stops11h 54m

Denver Intl

Mon 8/3

6:00 am-11:01 am

1 stop4h 01m

$536

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Fri 9/11

6:27 pm-8:55 am

2 stops15h 28m

Denver Intl

Sun 9/13

5:30 am-2:29 pm

1 stop7h 59m

$552

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Mon 8/3

6:25 pm-7:42 am

1 stop14h 17m

Denver Intl

Mon 8/10

9:05 pm-11:22 pm

1 stop25h 17m

$597
Cheapest one-way

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Mon 8/17

6:23 pm-11:54 pm

1 stop6h 31m

$193
Quickest one-way

DuluthDenver

DLH - DEN

DLHDEN

Duluth Intl

Sun 10/11

5:14 am-9:57 am

1 stop5h 43m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Duluth to Denver

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 Duluth to Denver in July.
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 Duluth-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Duluth-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Duluth-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Duluth-Denver 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 Duluth-Denver 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 Duluth to Denver

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

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

Currently, September is the cheapest month in which you can book a flight from Duluth to Denver (average of $153). Flying from Duluth to Denver 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 Denver?

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated July 14, 2026.
Read through reviews of airlines operating flights from Duluth to Denver, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,465 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Food

7.2

Crew

8.5

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
8,465 reviews
Delta
7.8
Good
8,465 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Food

7.2

Crew

8.5

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
9,988 reviews
Delta
7.8
Good
8,465 reviews

Entertainment

7.8

Overall

7.8

Comfort

7.8

Boarding

8.1

Food

7.2

Crew

8.5

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 Denver. 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 Duluth to Denver?

    A quick flight from Duluth to Denver can take about 5h 43m. United Airlines provides one of the quickest options available for as low as $437. There are 789 mi between Duluth and Denver. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Delta, at $123, was found to be the cheapest airline from Duluth to Denver. An alternate airline flying to your destination would be United Airlines. Delta is priced at 67% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Duluth to Denver (average of $153). Flying from Duluth to Denver 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

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Westminster
Centennial
Lakewood
Broomfield
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Duluth to Denver

Discover the top 2 airlines that operate flights from Duluth to Denver. 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 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$123Average$351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$266Average$397FlexibilityNo cancel feeOn-time69%

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