DEN - DLH

$195 Find Cheap Flights from Denver to Duluth - Compare and Save

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 9/1. 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, 0 bags

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Everything you should know

Cheapest round-trip
$308
Typical prices: $288-$630
United Airlines
Wed 9/30Sat 10/10
DEN - DLH • 1 stop
Cheapest one-way
$195
Typical prices: $238-$353
Delta
Tue 9/1
DEN - DLH • 1 stop
Top airlines
Cheapest • from $308 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Denver and Duluth. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $500 (round-trip)
Shortest trip • 4h 45m (one-way)
Insights
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Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Duluth!
Flight Deals
Booking Insights
Flight 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 30 - Sat, Oct 10
United Airlines Logo
3:47 pm - 11:22 pm
DEN
-
DLH
6h 35m
1 stop
United Airlines Logo
3:10 pm - 9:44 pm
DLH
-
DEN
7h 34m
1 stop
$308United Airlines
Sat, Sep 26 - Sat, Oct 10
United Airlines Logo
4:38 pm - 11:22 pm
DEN
-
DLH
5h 44m
1 stop
United Airlines Logo
7:45 am - 12:45 pm
DLH
-
DEN
6h 00m
1 stop
$308United Airlines
Wed, Sep 30 - Wed, Oct 7
Delta Logo
5:45 pm - 10:35 pm
DEN
-
DLH
3h 50m
1 stop
Delta Logo
4:21 pm - 8:10 pm
DLH
-
DEN
4h 49m
1 stop
$322Delta
Sat, Sep 12 - Tue, Sep 15
Delta Logo
6:15 am - 11:03 am
DEN
-
DLH
3h 48m
1 stop
Delta Logo
4:11 pm - 8:05 pm
DLH
-
DEN
4h 54m
1 stop
$322Delta
Thu, Sep 3 - Sat, Sep 5
Delta Logo
6:00 am - 11:01 am
DEN
-
DLH
4h 01m
1 stop
Delta Logo
4:11 pm - 7:51 pm
DLH
-
DEN
4h 40m
1 stop
$322Delta
Sat, Sep 26 - Sat, Oct 10
Delta Logo
8:45 am - 3:29 pm
DEN
-
DLH
5h 44m
1 stop
Delta Logo
5:14 am - 10:02 am
DLH
-
DEN
5h 48m
1 stop
$322Delta
Tue, Sep 15 - Tue, Sep 22
Delta Logo
6:15 am - 11:03 am
DEN
-
DLH
3h 48m
1 stop
Delta Logo
4:11 pm - 8:05 pm
DLH
-
DEN
4h 54m
1 stop
$322Delta
Wed, Sep 2 - Sat, Sep 5
Delta Logo
1:00 pm - 7:44 pm
DEN
-
DLH
5h 44m
1 stop
Delta Logo
4:11 pm - 7:51 pm
DLH
-
DEN
4h 40m
1 stop
$322Delta
Wed, Sep 2 - Sat, Sep 5
Delta Logo
1:00 pm - 7:44 pm
DEN
-
DLH
5h 44m
1 stop
Delta Logo
4:11 pm - 7:51 pm
DLH
-
DEN
4h 40m
1 stop
$322Delta
Tue, Sep 29 - Sat, Oct 3
Delta Logo
6:15 am - 11:03 am
DEN
-
DLH
3h 48m
1 stop
Delta Logo
4:11 pm - 8:05 pm
DLH
-
DEN
4h 54m
1 stop
$322Delta
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.

How much is a round-trip flight from Denver to Duluth?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Duluth departing in September.

Flight prices are below average for this route right now.

Flights to Duluth from Denver usually cost between $446 and $588 in September.
The lowest price found in the past 5 days was $308 on United Airlines (Sep 26-Oct 10).

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 February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and June, where the average cost of round-trip tickets is $588 and $583 respectively.

Good to know

Low season

December

Cheapest flight

$195
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 24% increase in price.
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 5 days, the lowest price for a flight from Denver to Duluth was $195 for a one-way ticket and $308 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 Star Alliance 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 $510 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $459 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.
7.8
DeltaOverall score based on 8484 reviews
7.8Entertainment
7.8Comfort
8.5Crew
7.2Food
8.1Boarding
Airline reviews

First flight was delayed which resulted in missing our connecting. As a result class was downgraded to economy on a later flight.

4.0 OkayShameem, Jul 2026
DEN - MSP
Read more Delta reviews

First flight was delayed which resulted in missing our connecting. As a result class was downgraded to economy on a later flight.

Unprepared to rebook a flight of people. Uncommunicative. When I received updates in the app it was well after the announcement in the hold room. Offered a single $12 meal voucher, not enough for a sandwich at DEN, for a 17 hour delay. No one was able to explain their meal or hotel reimbursement policy for this cancellation, just handed a card to call the Help desk. My previous flight went through several delays and was finally cancelled, without explanation. The customer help desk closed while there was a long line. I then waited in line for a gate agent almost an hour while simultaneously on hold and trying to text with a remote Delta agent. Communicating with the text agent was almost impossible; they could not find any flights that got me back to my original city before the following evening. Kept offering itineraries that did not get me back to my origin airport or involved additional layovers. In 50 minutes on hold, never got through to an agent by phone. Finally spoke to one of the gate agents who was able to rebook on a red eye that had only one stop and got me back in the afternoon the next day, rather than late evening. Later by email, Delta offered 10,000 loyalty points for the inconvenience of the cancellation. The crew on the red eye flight were delightful. I don’t remember any food or entertainment on that flight.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

worst flight ever from Delta, it got delayed and kept on delaying..

Terrible. Four hour delay because Delta could not find crew to man the aircraft. Terrible communication. Terrible insight into the delays. One of the worst flight experiences I’ve had.

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

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

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

First, the flight was schedule to leave at 12:08. Delayed to 12:38. It is 12:58 and I am sitting at the gate. The staff are not communicating with us (just tell me it’s gonna be five hours if that’s the case, quit hufflepuffing around like you’re trying to board us when the plane isn’t even here and you don’t know where your crew are. I’m still waiting for any communication about the further delay. This is a rebooked flight from a cancelled flight yesterday, when the airline failed to fulfill its fiduciary responsibility to hotel and cover transport for overnight cancelations. Asking about the food on the flight? What food?!? Delta doesn’t serve meals unless you pay for them and you really want me to give delta a high rating for passing out processed snacks (fun size!)? Can we be for real. Delta is cementing itself in history as one of the cheap, stingy, outdated, glory days are over airlines, and it shows. I took this flight knowing delta was going to provide below level service but this is beyond burgers!! I can’t believe a multi billion or dollar company looked straight in my eyes yesterday and I told me this wasn’t their fault and there for the extra cost in hotel and hundreds of dollars in Ubers are MY RESPONSIBILITY. The only thing I am at fault for is believing delta is reputable company worthy of my dollars. I’m not even sure I want to be compensated unless it is cash because I would rather die never traveling again than to put money in their pockets.

This flight was supposed to land at 10:55 pm on January 14th. Instead, it landed at 3:20 am on Monday, January 15th, resulting in a completely lost day due to not going to bed until 5:00 am.

Flight was late to take off Plane broke down Had to move everyone to another plane Told we weren’t going to LGA but Newark Also told we would be taken to NY But United lied and we ended up at Newark at 2 in the morning Horrible experience. And the experience of trying to get compensation from United is just as bad. They could not care less about their passengers Never again!

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

This planes staff was top tier. Everything went great and had a great flight home.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Boarding and crew were great, but seats are terribly uncomfortable. No food or entertainment options.

Booked through Kayak for $236. They canceled the flight unknown to me; retaining $100 for canceling it. Found out when I went to check in. Rebooked the same flight for $400. Incredibly disappointed. The Sun Country part was as to be expected. Crowded, no food, no arm room but got me where I wanted to go.

Sat between 2 big men. I was uncomfortable. Flight was delayed twice. About 2 hours altogether.

It was a good experience. I do wish the seats were roomier. Also, I did not like being charged for my carry on bag

The Flight was fine, the staff treated me well, the flight got delayed over 5 1/2 hours for maintenance issues....but it worked out OK,, they were very apologetic about it, and it is better to not fly if there is any issue than endanger peoples lives, so in reality that was a good thing, It did cost me extra for parking because I went beyond the time I had purchased for parking at MSP. But all in all, Good flight

I did not take this flight because the reservation made by Kayak was wrong! Kayak owes me a trip from Minneapolis to Duluth.

When I got to the airport in Seattle, they told me the flight "did not exist". Kayak reserved me a seat on a flight that did not exist. This is inexcusable. I was able to change my reservation to a flight that actually did exist, but the flight was later and then I didn't make it in time for the next leg of my trip from Minneapolis to Duluth. Kayak owes me a trip from Minneapolis to Duluth, and a big apology for messing up my reservation.

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

Crew was courteous. Flight was late arriving which made us late. Very cramped seating.

The crew on both departure and reform flights are gruff and very loud, classless. Flights should have a calmer atmosphere, especially for those that have flying fears. Sun Country really disappoints.

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

Information on your arrival and departure airports