DLH - DEN

$163 Find Cheap Flights from Duluth to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Denver departing on 9/25. 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 Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Duluth to Denver, 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 Duluth to Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Duluth to Denver (DLH-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Duluth to Denver 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 Duluth to Denver

Sat, Oct 4 - Sat, Oct 11
United Airlines Logo
9:45 am - 2:42 pmDLH-DEN
5h 57m1 stop
United Airlines Logo
7:48 am - 2:32 pmDEN-DLH
5h 44m1 stop
$268United Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
Delta Logo
7:50 am - 12:47 pmDLH-DEN
5h 57m1 stop
Delta Logo
6:05 am - 11:22 amDEN-DLH
4h 17m1 stop
$318Delta
Find Deal
Tue, Oct 7 - Tue, Oct 14
United Airlines Logo
9:45 am - 4:35 pmDLH-DEN
7h 50m1 stop
United Airlines Logo
2:45 pm - 10:08 pmDEN-DLH
6h 23m1 stop
$322United Airlines
Find Deal
Mon, Sep 29 - Sat, Oct 11
United Airlines Logo
9:45 am - 4:03 pmDLH-DEN
7h 18m1 stop
United Airlines Logo
7:48 am - 2:32 pmDEN-DLH
5h 44m1 stop
$332United Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
United Airlines Logo
9:45 am - 4:03 pmDLH-DEN
7h 18m1 stop
United Airlines Logo
7:45 am - 10:08 pmDEN-DLH
13h 23m2 stops
$361United Airlines
Find Deal
Wed, Oct 1 - Tue, Oct 7
United Airlines Logo
9:45 am - 4:35 pmDLH-DEN
7h 50m1 stop
United Airlines Logo
6:00 am - 6:37 pmDEN-DLH
11h 37m1 stop
$367United Airlines
Find Deal
Fri, Nov 7 - Wed, Nov 12
Delta Logo
7:50 am - 12:41 pmDLH-DEN
5h 51m1 stop
Delta Logo
4:18 pm - 11:50 pmDEN-DLH
6h 32m1 stop
$371Delta
Find Deal
Fri, Nov 7 - Wed, Nov 12
Delta Logo
7:50 am - 12:41 pmDLH-DEN
5h 51m1 stop
Delta Logo
4:18 pm - 11:50 pmDEN-DLH
6h 32m1 stop
$372Delta
Find Deal
Sat, Oct 4 - Sat, Oct 11
United Airlines Logo
9:45 am - 2:42 pmDLH-DEN
5h 57m1 stop
United Airlines Logo
5:24 pm - 10:45 amDEN-DLH
16h 21m2 stops
$374United Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5
United Airlines Logo
3:07 pm - 10:00 pmDLH-DEN
7h 53m1 stop
United Airlines Logo
6:00 am - 10:08 pmDEN-DLH
15h 08m1 stop
$386United Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $268 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
8 weeks
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 57% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$268
Typical prices: $248-399
United Airlines
Sat 10/4Sat 10/11
DLH - DEN • 1 stop
Cheapest one-way
$163
Typical prices: $154-229
United Airlines
Thu 9/25
DLH - DEN • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Booking Insights

KAYAK's insights & trends for Duluth to Denver flights

Get data-powered insights and trends into flights from Duluth to Denver 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 Duluth to Denver?

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

For Duluth to Denver, Sunday is the cheapest day to fly on average and Monday is the most expensive. Flying from Denver back to Duluth, the best deals are generally found on Monday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Duluth to Denver, 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 Duluth to Denver is September, where tickets cost $153 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $493 and $452 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Duluth to Denver, 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 Duluth to Denver, you should book around 8 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$163
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from Duluth to Denver

When to book flights from Duluth to Denver

Are your dates flexible? Find out the best times to travel from Duluth to Denver 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 Duluth to Denver

  • What is the cheapest flight from Duluth to Denver?

    In the last 3 days, the lowest price for a flight from Duluth to Denver was $163 for a one-way ticket and $268 for a round-trip.

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

    A passport is not required to fly from Duluth to Denver.

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

    On your way to Denver, you’ll fly out from Duluth Intl. You’ll be landing at Denver Intl.

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

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

  • Which airline alliances offer flights from Duluth to Denver?

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

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

    The two airlines most popular with KAYAK users for flights from Duluth to Denver are Delta and United Airlines. With an average price for the route of $337 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $493 and an overall rating of 7.4.

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

    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 Duluth to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Duluth 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 Duluth to Denver?

    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 Denver with an airline and back to Duluth with another airline. Booking your flights between Duluth and DEN 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 Duluth to Denver?

    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 Denver from Duluth 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 Duluth to Denver

 
See real verified KAYAK customer reviews for airlines flying from Duluth to Denver. 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 Duluth to Denver? 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.
7.9
DeltaOverall score based on 7960 reviews
8.2Boarding
7.9Entertainment
7.3Food
8.5Crew
7.9Comfort
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

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

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

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.

Boarded flight, issues with the place and had to get off the plane, wait, and then board a different plane at a different gate. This impacted my short trip negatively. A worker died outside of the plane window and we sat there the entire time while they tried to revive him, unsuccessfully, which was traumatic.

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.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.