$133 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 6/15. 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.
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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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Flights Deals

Best Colorado Flight Deals from Duluth

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Denver
Denver1 stop$238
Denver
Denver1 stop$238

Cheap Flights from Duluth to Colorado

 
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.

Recent round-trip flight deals from Duluth to Colorado

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Duluth to Colorado.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
6:03 pm - 11:28 pmDLH-DEN
6h 25m1 stop
Delta Logo
7:14 pm - 11:40 pmDEN-DLH
3h 26m1 stop
$238Delta
Find Deal
Fri, Aug 1 - Mon, Aug 4
Delta Logo
7:55 am - 1:30 pmDLH-DEN
6h 35m1 stop
Delta Logo
6:44 pm - 11:38 pmDEN-DLH
3h 54m1 stop
$272Delta
Find Deal
Wed, May 21 - Thu, May 29
United Airlines Logo
11:20 am - 4:35 pmDLH-DEN
6h 15m1 stop
United Airlines Logo
6:15 am - 2:33 pmDEN-DLH
7h 18m1 stop
$298United Airlines
Find Deal
Fri, Oct 24 - Tue, Oct 28
Delta Logo
6:10 pm - 10:28 pmDLH-DEN
5h 18m1 stop
Delta Logo
6:55 pm - 11:37 pmDEN-DLH
3h 42m1 stop
$397Delta
Find Deal
Wed, Aug 13 - Fri, Aug 15
Delta Logo
5:10 am - 8:06 amDLH-DEN
3h 56m1 stop
Delta Logo
6:00 am - 11:13 amDEN-DLH
4h 13m1 stop
$412Delta
Find Deal
Thu, May 15 - Wed, May 21
United Airlines Logo
8:00 am - 2:55 pmDLH-DEN
7h 55m1 stop
United Airlines Logo
11:14 am - 10:52 amDEN-DLH
22h 38m2 stops
$438United Airlines
Find Deal
Wed, May 21 - Thu, May 29
Delta Logo
5:10 am - 8:06 amDLH-DEN
3h 56m1 stop
Delta Logo
6:44 pm - 11:38 pmDEN-DLH
3h 54m1 stop
$457Delta
Find Deal
Thu, May 15 - Mon, May 19
Delta Logo
5:10 am - 8:06 amDLH-DEN
3h 56m1 stop
Delta Logo
9:21 am - 2:11 pmDEN-DLH
3h 50m1 stop
$458Delta
Find Deal
Thu, Jun 5 - Wed, Jun 11
United Airlines Logo
8:00 am - 7:38 pmDLH-DEN
12h 38m2 stops
United Airlines Logo
7:50 am - 2:28 pmDEN-DLH
5h 38m1 stop
$459United Airlines
Find Deal
Wed, Jul 2 - Sat, Jul 5
United Airlines Logo
11:20 am - 4:30 pmDLH-DEN
6h 10m1 stop
United Airlines Logo
8:57 pm - 10:45 amDEN-DLH
12h 48m1 stop
$472United Airlines
Find Deal
Wed, May 14 - Sun, May 18
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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 November, when tickets cost $259 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $482 and $445 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.

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

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 Colorado, 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 Colorado, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.


Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$133
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 16% 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 at night, when round-trip flights cost $241 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.

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.
8.0
DeltaOverall score based on 7934 reviews
7.3Food
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

8.0 ExcellentFredrick, Apr 2025GSO - DTW
Read more Delta reviews

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Airline lost my luggage and set me back a day worth of travel due to having to stay in Denver to wait on my luggage

In thirty years of traveling, mostly with Delta, this was the worst day ever.

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

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

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!!!!!

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.

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.

No line to check my bag. Reasonable overweight fee. When the connection was late due to weather, the gate agent opened the door and let me on the second flight. The plane waited for my luggage transfer. My bag arrived on time at my final destination:)

I had paid for a seat assignment at the time of reservation but when I checked in the night before it wasn’t there. Had to purchase another seat.

So unprofessional. They changed my connecting flight to a time that made it literally impossible to make the flight with no way to contact them or reject the changes. When I missed the flight as expected, there was no one to be found at their ticketing counter and the phone support put me on hold for an indefinite time. Since they didn't have another flight that day, all sun country air personell had left the airport (this was at 7pm) and my only options were to get a hotel for the night and come back the next afternoon to hopefully get rescheduled or buy a flight with another airline.

I purchased an aisle seat but was put in the middle seat surrounded by families with small sick children (3). That can happen anytime and I was prepared. The ticket agent questioned why I hadn’t paid for my luggage and had to explain that 2 pieces were included with my ticket. I hate that nickel and diming attitude. Please inform your staff better.

I know the airline has been open for 40 years and the flight crew looked just as old. The flight attendants were not friendly and rude. They should think of retiring this crew.

The crew was friendly, but I only got a drink, no food.

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

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