How long is the flight from Denver to Duluth?

There are many flights that can get you from Denver to Duluth in 5h 03m. Fly via United Airlines or Delta 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 $173 and $298, respectively. Sun Country Air is currently priced 81% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Duluth ranges from 0.6 - 3.6 inches per month. August is typically the wettest month, when rainfall can reach 3.6 in. February is typically the driest time to visit Duluth when rainfall is around 0.6 in.

If weather is an important factor for your trip to Duluth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 12.2 F).

What are the most popular airlines that fly from Denver to Duluth?

When booking a flight from Denver to Duluth, you may want to consider flying on Delta, Sun Country Air or United Airlines as they are the most popular for this route.

Most accurate provider : When it comes to deals on Denver-Duluth flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Duluth flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$268+ Flights from Denver to Duluth

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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 December 23, 2025.

Mon 12/225:53 pmDEN - DLH

1 stop3h 59mDelta

Fri 1/234:24 pmDLH - DEN

1 stop4h 41mDelta

Deal found 12/22

$553

Tue 12/237:00 pmDEN - DLH

2 stops26h 55mUnited Airlines

Sun 12/283:03 pmDLH - DEN

1 stop25h 49mUnited Airlines

Deal found 12/22

$963

Wed 12/244:14 pmDEN - DLH

1 stop5h 38mDelta

Mon 12/294:10 pmDLH - DEN

1 stop4h 58mDelta

Deal found 12/22

$1,038

Sun 12/214:26 pmDEN - DLH

1 stop21h 02mUnited Airlines

Mon 12/297:50 amDLH - DEN

1 stop9h 39mUnited Airlines

Deal found 12/21

$1,564

Best flights from Denver to Duluth
Discover carefully curated flight deals from Denver to Duluth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

Tue 1/67:45 amDEN - DLH

1 stop5h 45mUnited Airlines

Sat 1/103:05 pmDLH - DEN

1 stop7h 54mUnited Airlines

Deal found 12/22

$268

Fri 1/305:49 pmDEN - DLH

1 stop5h 03mDelta

Sun 2/15:00 amDLH - DEN

1 stop6h 36mDelta

Deal found 12/21

$388

Sat 2/77:50 amDEN - DLH

1 stop5h 40mUnited Airlines

Tue 2/103:05 pmDLH - DEN

1 stop6h 08mUnited Airlines

Deal found 12/20

$388

Mon 1/511:32 amDEN - DLH

1 stop7h 03mDelta

Fri 1/94:24 pmDLH - DEN

1 stop4h 41mDelta

Deal found 12/21

$416

Wed 2/115:49 pmDEN - DLH

1 stop5h 03mDelta

Mon 2/1612:15 pmDLH - DEN

1 stop5h 24mDelta

Deal found 12/22

$427

Mon 1/56:00 amDEN - DLH

1 stop7h 28mUnited Airlines

Fri 1/93:05 pmDLH - DEN

2 stops17h 00mUnited Airlines

Deal found 12/21

$453

Thu 2/265:49 pmDEN - DLH

1 stop5h 06mDelta

Mon 3/212:15 pmDLH - DEN

1 stop5h 24mDelta

Deal found 12/20

$452

Tue 1/137:50 amDEN - DLH

1 stop5h 40mUnited Airlines

Sun 1/183:05 pmDLH - DEN

1 stop7h 55mUnited Airlines

Deal found 12/22

$477

Last-minute flights from Denver to Duluth
Discover last-minute flight deals from Denver to Duluth. Data last updated December 23, 2025 and is based on user searches.

Mon 12/225:53 pmDEN - DLH

1 stop3h 59mDelta

Fri 1/234:24 pmDLH - DEN

1 stop4h 41mDelta

Deal found 12/22

$553

Sun 1/46:00 amDEN - DLH

1 stop4h 15mDelta

Wed 1/711:56 amDLH - DEN

1 stop5h 48mDelta

Deal found 12/21

$416

Mon 1/56:00 amDEN - DLH

1 stop7h 28mUnited Airlines

Fri 1/93:05 pmDLH - DEN

2 stops17h 00mUnited Airlines

Deal found 12/21

$453

Tue 1/67:45 amDEN - DLH

1 stop5h 45mUnited Airlines

Sat 1/103:05 pmDLH - DEN

1 stop7h 54mUnited Airlines

Deal found 12/22

$268

Tue 1/137:50 amDEN - DLH

1 stop5h 40mUnited Airlines

Sun 1/183:05 pmDLH - DEN

1 stop7h 55mUnited Airlines

Deal found 12/22

$477

Fri 1/305:49 pmDEN - DLH

1 stop5h 03mDelta

Sun 2/15:00 amDLH - DEN

1 stop6h 36mDelta

Deal found 12/21

$388

Fri 1/303:15 pmDEN - DLH

1 stop5h 44mUnited Airlines

Sun 2/13:05 pmDLH - DEN

2 stops19h 49mUnited Airlines

Deal found 12/21

$620

One-way flights from Denver to Duluth
Search for one-way flight options from Denver to Duluth. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Tue 12/303:02 pmDEN - DLH

1 stop6h 50mDelta

Deal found 12/23

$314

Tue 12/301:30 pmDEN - DLH

2 stops8h 25mUnited Airlines

Deal found 12/23

$611

Find flight deals from Denver to Duluth

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$268 (United Airlines)
Popular in	September
Cheapest in	November
Average price	$326

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

Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 1/6

7:45 am-2:30 pm

1 stop5h 45m

Duluth Intl

Sat 1/10

3:05 pm-9:59 pm

1 stop7h 54m

$268

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 1/30

5:49 pm-11:52 pm

1 stop5h 03m

Duluth Intl

Sun 2/1

5:00 am-10:36 am

1 stop6h 36m

$388

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 2/7

7:50 am-2:30 pm

1 stop5h 40m

Duluth Intl

Tue 2/10

3:05 pm-8:13 pm

1 stop6h 08m

$388

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 1/5

11:32 am-7:35 pm

1 stop7h 03m

Duluth Intl

Fri 1/9

4:24 pm-8:05 pm

1 stop4h 41m

$416

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 2/11

5:49 pm-11:52 pm

1 stop5h 03m

Duluth Intl

Mon 2/16

12:15 pm-4:39 pm

1 stop5h 24m

$427

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 2/26

5:49 pm-11:55 pm

1 stop5h 06m

Duluth Intl

Mon 3/2

12:15 pm-4:39 pm

1 stop5h 24m

$452

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 1/5

6:00 am-2:28 pm

1 stop7h 28m

Duluth Intl

Fri 1/9

3:05 pm-7:05 am

2 stops17h 00m

$453

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 1/13

7:50 am-2:30 pm

1 stop5h 40m

Duluth Intl

Sun 1/18

3:05 pm-10:00 pm

1 stop7h 55m

$477

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 12/30

3:02 pm-10:52 pm

1 stop6h 50m

$314

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Tue 12/30

1:30 pm-10:55 pm

2 stops8h 25m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Compare providers for flights from Denver to Duluth

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Duluth in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Duluth flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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

Currently, February is the cheapest month in which you can book a flight from Denver to Duluth (average of $66). Flying from Denver 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.

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

One of the essential ways to save on airfare from Denver to Duluth is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 65% on airfare.

Reviews of airlines servicing Duluth

Read reviews from past customers who have flown Delta, United Airlines, and Sun 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

7.9

Good

8,015 reviews

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

7.9

Good

8,015 reviews

Delta

7.9

Good

8,015 reviews

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

9,107 reviews

Delta

7.9

Good

8,015 reviews

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

6.9

Okay

334 reviews

Delta

7.9

Good

8,015 reviews

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

How long is the flight from Denver to Duluth?
There are many flights that can get you from Denver to Duluth in 5h 03m. Fly via United Airlines or Delta 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 $173 and $298, respectively. Sun Country Air is currently priced 81% 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.
What is the cheapest month to book a flight from Denver to Duluth?
Currently, February is the cheapest month in which you can book a flight from Denver to Duluth (average of $66). Flying from Denver 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

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Top 3 airlines flying from Denver to Duluth

Airline	Cheapest	Average	Flexibility	On-time
Sun Country Air	Cheapest$68	Average$216	FlexibilityNo cancel fee	On-time83%
Delta	Cheapest$238	Average$377	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$298	Average$557	FlexibilityNo cancel fee	On-time69%

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$268+ Cheap flights from Denver to Duluth (DEN - 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Denver to Duluth with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Denver to Duluth

Cheapest flights from Denver to DuluthExplore 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 December 23, 2025.

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 December 23, 2025.

Find flight deals from Denver to Duluth

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Duluth that are best for you.

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 December.

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.

Cheapflights Insights

Everything you need to know about your flight from Denver to Duluth

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

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

Reviews of airlines servicing Duluth

Read reviews from past customers who have flown Delta, United Airlines, and Sun 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.

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?

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

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

How can I find direct flights from Denver to Duluth?

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

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

Traveling to a place near Duluth?

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Alternative routes for Denver to Duluth

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Top 3 airlines flying from Denver to Duluth

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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 December 23, 2025.