$238 Find Cheap Flights from Duluth to Colorado

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Colorado departing on 4/16. 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

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

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

Book Cheap Duluth to Colorado Plane Tickets

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

Thu, Apr 16 - Wed, Apr 22
Delta Logo
4:20 pm - 10:29 pmDLH-DEN
7h 09m1 stop
Delta Logo
6:10 am - 10:57 amDEN-DLH
3h 47m1 stop
$238Delta
Find Deal
Sat, Feb 21 - Sat, Feb 28
Delta Logo
4:20 pm - 8:03 pmDLH-DEN
4h 43m1 stop
Delta Logo
6:10 am - 11:07 amDEN-DLH
3h 57m1 stop
$263Delta
Find Deal
Thu, Apr 16 - Wed, Apr 22
Delta Logo
4:20 pm - 10:29 pmDLH-DEN
7h 09m1 stop
Delta Logo
6:10 am - 10:57 amDEN-DLH
3h 47m1 stop
$288Delta
Find Deal
Fri, Nov 14 - Mon, Nov 17
Delta Logo
8:14 am - 12:43 pmDLH-DEN
5h 29m1 stop
Delta Logo
6:59 pm - 11:50 pmDEN-DLH
3h 51m1 stop
$348Delta
Find Deal
Wed, Apr 22 - Sat, Apr 25
Delta Logo
4:20 pm - 10:29 pmDLH-DEN
7h 09m1 stop
Delta Logo
7:00 am - 10:48 pmDEN-DLH
14h 48m2 stops
$352Delta
Find Deal
Sun, Nov 16 - Wed, Nov 19
Delta Logo
5:10 am - 10:03 amDLH-DEN
5h 53m1 stop
Delta Logo
5:45 am - 11:21 amDEN-DLH
4h 36m1 stop
$366Delta
Find Deal
Tue, Nov 25 - Tue, Dec 2
Delta Logo
5:10 am - 10:03 amDLH-DEN
5h 53m1 stop
Delta Logo
5:45 am - 11:20 amDEN-DLH
4h 35m1 stop
$368Delta
Find Deal
Thu, Dec 18 - Sat, Jan 10
United Airlines Logo
3:03 pm - 11:38 pmDLH-DEN
9h 35m1 stop
United Airlines Logo
6:00 am - 2:30 pmDEN-DLH
7h 30m1 stop
$387United Airlines
Find Deal
Tue, Apr 14 - Fri, Apr 17
Delta Logo
4:20 pm - 10:29 pmDLH-DEN
7h 09m1 stop
Delta Logo
4:00 pm - 10:48 pmDEN-DLH
5h 48m1 stop
$401Delta
Find Deal
Thu, Dec 18 - Sat, Jan 10
United Airlines Logo
7:50 am - 11:38 pmDLH-DEN
16h 48m1 stop
United Airlines Logo
6:00 am - 2:30 pmDEN-DLH
7h 30m1 stop
$427United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Duluth to Colorado flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Duluth to Colorado, 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 Colorado is September, when tickets cost $153 (return) on average. On the other hand, the most expensive months are July and March, when the average cost of round-trip tickets is $442 and $422 respectively.

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

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

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

Good to know

Low seasonAugust
Cheapest flight$238
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Duluth to Denver

FAQs - booking Colorado flights

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

    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 Colorado.

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

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

    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 from Duluth to Colorado with an airline and back with another airline.

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

    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 from Duluth to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally in the afternoon, when round-trip flights cost $268 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $383.

Reviews of the top 3 airlines serving from Duluth to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Duluth to Colorado. 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 Colorado? 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 7996 reviews
7.3Food
7.9Comfort
7.9Entertainment
8.5Crew
8.2Boarding
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

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.

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

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.

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

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