DEN - DLH

$233 Find Cheap Flights from Denver to Duluth

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Duluth departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Duluth

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Duluth, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Duluth, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Denver to Duluth (DEN-DLH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Duluth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Duluth

Wed, Sep 3 - Sat, Sep 13
Delta Logo
4:00 pm - 10:46 pmDEN-DLH
5h 46m1 stop
Delta Logo
4:19 pm - 7:54 pmDLH-DEN
4h 35m1 stop
$293Delta
Find Deal
Thu, Oct 23 - Sun, Oct 26
Delta Logo
6:00 am - 11:22 amDEN-DLH
4h 22m1 stop
Delta Logo
12:02 pm - 3:42 pmDLH-DEN
4h 40m1 stop
$307Delta
Find Deal
Tue, Sep 2 - Sat, Sep 6
Delta Logo
4:00 pm - 10:46 pmDEN-DLH
5h 46m1 stop
Delta Logo
7:50 am - 12:49 pmDLH-DEN
5h 59m1 stop
$308Delta
Find Deal
Tue, Sep 2 - Sat, Sep 6
Delta Logo
4:00 pm - 10:46 pmDEN-DLH
5h 46m1 stop
Delta Logo
7:50 am - 12:49 pmDLH-DEN
5h 59m1 stop
$317Delta
Find Deal
Fri, Oct 24 - Sun, Oct 26
Delta Logo
6:53 pm - 11:42 pmDEN-DLH
3h 49m1 stop
Delta Logo
12:02 pm - 3:42 pmDLH-DEN
4h 40m1 stop
$325Delta
Find Deal
Tue, Sep 2 - Sun, Sep 7
Delta Logo
4:00 pm - 10:46 pmDEN-DLH
5h 46m1 stop
Delta Logo
5:10 am - 9:55 amDLH-DEN
5h 45m1 stop
$348Delta
Find Deal
Tue, Sep 2 - Sat, Sep 6
United Airlines Logo
8:45 pm - 6:30 pmDEN-DLH
20h 45m2 stops
United Airlines Logo
8:00 am - 2:37 pmDLH-DEN
7h 37m1 stop
$387United Airlines
Find Deal
Mon, Sep 1 - Sat, Sep 6
Delta Logo
4:00 pm - 10:46 pmDEN-DLH
5h 46m1 stop
Delta Logo
7:50 am - 12:49 pmDLH-DEN
5h 59m1 stop
$411Delta
Find Deal
Sat, Sep 13 - Sun, Sep 14
Delta Logo
4:00 pm - 10:43 pmDEN-DLH
5h 43m1 stop
Delta Logo
4:20 pm - 7:54 pmDLH-DEN
4h 34m1 stop
$412Delta
Find Deal
Mon, Sep 1 - Sat, Sep 6
United Airlines Logo
7:50 am - 10:05 pmDEN-DLH
13h 15m2 stops
United Airlines Logo
8:00 am - 2:37 pmDLH-DEN
7h 37m1 stop
$470United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Denver to Duluth flights

Get data-powered insights and trends into flights from Denver to Duluth to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to Duluth?

The average price of all round-trip flights from Denver to Duluth clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Duluth on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Denver to Duluth. For your return ticket, we recommend flying on a Sunday and avoiding Mondays for the best deals.

What is the cheapest month to fly from Denver to Duluth?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Duluth, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Duluth is September, where tickets cost $282 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $457 and $446 respectively.

How far in advance should I book a flight from Denver to Duluth?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Duluth, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Duluth, you should book around 5 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$233
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Denver to Duluth

When to book flights from Denver to Duluth

Are your dates flexible? Find out the best times to travel from Denver to Duluth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Duluth

  • What is the cheapest flight from Denver to Duluth?

    In the last 3 days, the lowest price for a flight from Denver to Duluth was $233 for a one-way ticket and $293 for a round-trip.

  • Do I need a passport to fly between Denver and Duluth?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to Duluth?

    Denver airport is called Denver Intl and the only airport in Duluth is Duluth Intl.

  • Which aircraft models fly most regularly from Denver to Duluth?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Duluth?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Denver and Duluth, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Denver to Duluth, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Duluth are Delta and United Airlines. With an average price for the route of $352 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $423 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Denver to Duluth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Duluth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Duluth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Duluth from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Duluth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Duluth with an airline and back to Denver with another airline. Booking your flights between Denver and DLH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Duluth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Duluth from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Denver to Duluth

 
See real verified KAYAK customer reviews for airlines flying from Denver to Duluth. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Duluth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
7.9Comfort
8.5Crew
7.3Food
8.2Boarding
7.9Entertainment
Airline reviews

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

8.0 ExcellentAnonymous, Jul 2025ANC - MSP
Read more Delta reviews

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Delta is better for short flights and very low need for customer service. Avoid for longer flights

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Delta is a premier airline so my expectations are most always met.

Everything was good except when we're on a 6 hour flight at dinner time and all they offer as part of the fare are little bags of junk food, it's disappointing. Bring back food service without an added price.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

I love my flight attendant Faith, always smiles always helpful. She makes the flight experience wonderful thank you

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

The plane was freezing cold. Asked for a blanket and there were none. Was told twice that the pilots would warm the plane and it never happened Worst experience flying ever

Multiple delays because they screwed up on the crew schedule and had to wait for over an hour for more people to come.

It was good. Basic flight. Drinks only. Pay budget. Get budget and I’m good with that. I want to get where I need to go. Not hard to please. Female First Officer is an absolute bonus for me!

The Wi-Fi was off, the arm rests are hard plastic.

The assistance with the wheel chairs was fabulous. All the people were so very friendly and helpful. I want to thank them all.

We almost missed our return flight. We got to the gate one minute from closing the cabin door, and the agent got us aboard the plane! We are so very grateful!!!!!

I already filled out a survey for this flight. We booked through KAYAK with airfare assist, and airfare assist did not confirm or honor our flight. Therefore, we had to go to a different place with a different travel agency. I tried very hard with airfare assist, They also promoted this on cheapair.com, but it was a bait and switch in both instances.

The flight there was frustrating but the flight home was very good.

Flight was delayed in phoenix by 1 hour. When Kenny got to minneapolis st paul, Kenny missed his connecting flight to Duluth on Sun country air. Sun country customer service did nothing to help Kenny get home to Duluth. We will not fly with sun country ever again.

When we landed in Minneapolis from Providence, the ground crew was unable to move the jet bridge to meet our plane because the wheels were frozen. We waited patiently on the plane for about 45 minutes while they tried to solve this problem. It was mind boggling that this would not be more quickly resolved, or anticipated, in a place where sever winter weather is the norm. We stressed about meeting our connecting flight to Portland, which we assumed would be our only option for that day. Fortunately, when we finally raced from our gate to the next one, that Sun Country flight had been delayed so we didn't miss it. We decided not to take anything but direct flights from now on, no matter how much cheaper.

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

Information on your arrival and departure airports

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