$168 Find Cheap Flights from Duluth to Colorado

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 Colorado departing on 2/19. 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 pm
DLH
-
DEN
7h 09m1 stop
Delta Logo
6:10 am - 10:57 am
DEN
-
DLH
3h 47m1 stop
$300Delta
Sat, Feb 21 - Sat, Feb 28
United Airlines Logo
3:12 pm - 10:05 pm
DLH
-
DEN
7h 53m1 stop
United Airlines Logo
7:45 am - 2:37 pm
DEN
-
DLH
5h 52m1 stop
$308United Airlines
Sat, Feb 21 - Sat, Feb 28
Delta Logo
4:18 pm - 8:05 pm
DLH
-
DEN
4h 47m1 stop
Delta Logo
5:49 pm - 11:25 pm
DEN
-
DLH
4h 36m1 stop
$318Delta
Sat, Feb 21 - Sat, Feb 28
Delta Logo
4:18 pm - 8:05 pm
DLH
-
DEN
4h 47m1 stop
Delta Logo
5:49 pm - 11:25 pm
DEN
-
DLH
4h 36m1 stop
$336Delta
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
3:05 pm - 8:12 pm
DLH
-
DEN
6h 07m1 stop
United Airlines Logo
6:00 am - 2:30 pm
DEN
-
DLH
7h 30m1 stop
$374United Airlines
Sat, Feb 21 - Sat, Feb 28
United Airlines Logo
11:20 am - 3:57 pm
DLH
-
DEN
5h 37m1 stop
United Airlines Logo
1:31 pm - 2:37 pm
DEN
-
DLH
24h 06m2 stops
$407United Airlines
Tue, Jan 6 - Sun, Jan 11
Delta Logo
4:24 pm - 8:05 pm
DLH
-
DEN
4h 41m1 stop
Delta Logo
5:51 pm - 11:52 pm
DEN
-
DLH
5h 01m1 stop
$423Delta
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
3:05 pm - 9:59 pm
DLH
-
DEN
7h 54m1 stop
United Airlines Logo
1:46 pm - 2:30 pm
DEN
-
DLH
23h 44m2 stops
$441United Airlines
Sat, Feb 21 - Sat, Feb 28
United Airlines Logo
3:12 pm - 7:48 pm
DLH
-
DEN
5h 36m1 stop
United Airlines Logo
8:33 pm - 10:43 am
DEN
-
DLH
13h 10m2 stops
$446United Airlines
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
3:05 pm - 8:12 pm
DLH
-
DEN
6h 07m1 stop
United Airlines Logo
1:46 pm - 2:30 pm
DEN
-
DLH
23h 44m2 stops
$451United Airlines
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 March and July, when the average cost of round-trip tickets is $523 and $442 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$168
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 22% 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 8007 reviews
7.9Entertainment
7.3Food
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

6.0 GoodJeff, Dec 2025
JFK - MIA
Read more Delta reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

United have really come back. Airport and boarding process is clear and good, app and information also very good

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.

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

Exceptional take off and landing in snow and wind…thank you to the well skilled pilots!

I liked entertainment system being downloaded on my iPad. The selections were limited but I appreciated being able to use my own screen. The flight was just fine. My only issue was both terminals being far from the main airport. Especially stoning at LAX near midnight and having to wait for a bus to take us to baggage pickup. Very inconvenient.

Just fine but comfort is always an issue since the seats are so close

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!

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

Information on your arrival and departure airports