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Cheap flights from Colorado to Duluth from $204

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Duluth departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:00 pm - 11:20 pmDEN  Denver Intl-DLH Duluth Intl
6h 20m1 stop Chicago O'Hare Intl
United Airlines Logo
6:24 pm - 11:29 pmDLH  Duluth Intl-DEN Denver Intl
6h 05m1 stop Chicago O'Hare Intl
$308United Airlines
Fri, Sep 11 - Fri, Sep 18
United Airlines Logo
4:06 pm - 11:20 pmDEN  Denver Intl-DLH Duluth Intl
6h 14m1 stop Chicago O'Hare Intl
United Airlines Logo
3:10 pm - 9:44 pmDLH  Duluth Intl-DEN Denver Intl
7h 34m1 stop Chicago O'Hare Intl
$308United Airlines
Sat, Sep 19 - Sat, Sep 26
United Airlines Logo
4:06 pm - 11:20 pmDEN  Denver Intl-DLH Duluth Intl
6h 14m1 stop Chicago O'Hare Intl
United Airlines Logo
6:24 pm - 11:28 pmDLH  Duluth Intl-DEN Denver Intl
6h 04m1 stop Chicago O'Hare Intl
$308United Airlines
Sat, Sep 12 - Mon, Sep 14
United Airlines Logo
3:47 pm - 11:22 pmDEN  Denver Intl-DLH Duluth Intl
6h 35m1 stop Chicago O'Hare Intl
United Airlines Logo
7:45 am - 12:45 pmDLH  Duluth Intl-DEN Denver Intl
6h 00m1 stop Chicago O'Hare Intl
$308United Airlines
Thu, Oct 22 - Sat, Oct 24
United Airlines Logo
4:40 pm - 11:22 pmDEN  Denver Intl-DLH Duluth Intl
5h 42m1 stop Chicago O'Hare Intl
United Airlines Logo
6:23 pm - 11:53 pmDLH  Duluth Intl-DEN Denver Intl
6h 30m1 stop Chicago O'Hare Intl
$308United Airlines
Mon, Aug 31 - Sun, Sep 6
United Airlines Logo
7:45 am - 2:29 pmDEN  Denver Intl-DLH Duluth Intl
5h 44m1 stop Chicago O'Hare Intl
United Airlines Logo
3:10 pm - 7:45 pmDLH  Duluth Intl-DEN Denver Intl
5h 35m1 stop Chicago O'Hare Intl
$308United Airlines
Sat, Sep 19 - Sat, Sep 26
Delta Logo
11:07 am - 7:12 pmDEN  Denver Intl-DLH Duluth Intl
7h 05m1 stop Minneapolis St Paul
Delta Logo
4:21 pm - 8:10 pmDLH  Duluth Intl-DEN Denver Intl
4h 49m1 stop Minneapolis St Paul
$322Delta
Thu, Oct 29 - Sat, Nov 7
Delta Logo
6:15 am - 11:03 amDEN  Denver Intl-DLH Duluth Intl
3h 48m1 stop Minneapolis St Paul
Delta Logo
5:15 am - 10:03 amDLH  Duluth Intl-DEN Denver Intl
5h 48m1 stop Minneapolis St Paul
$322Delta
Thu, Oct 1 - Sun, Oct 4
Delta Logo
6:00 am - 11:44 amDEN  Denver Intl-DLH Duluth Intl
4h 44m1 stop Minneapolis St Paul
Delta Logo
12:35 pm - 3:49 pmDLH  Duluth Intl-DEN Denver Intl
4h 14m1 stop Minneapolis St Paul
$322Delta
Fri, Oct 30 - Sun, Nov 1
United Airlines Logo
7:45 am - 2:29 pmDEN  Denver Intl-DLH Duluth Intl
5h 44m1 stop Chicago O'Hare Intl
United Airlines Logo
6:32 pm - 11:29 pmDLH  Duluth Intl-DEN Denver Intl
5h 57m1 stop Chicago O'Hare Intl
$323United Airlines
Sat, Aug 29 - Sat, Sep 12

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United Airlines flights from Colorado to Duluth

Our best United Airlines deals on Colorado to Duluth flight tickets
United Airlines
Aug 31
DEN4:40 pmDenver Intl
5h 42m
1 stop
DLH11:22 pmDuluth Intl
Sep 6
DLH6:23 pmDuluth Intl
6h 30m
1 stop
DEN11:53 pmDenver Intl
$308
United Airlines
Aug 29
DEN7:45 amDenver Intl
5h 44m
1 stop
DLH2:29 pmDuluth Intl
Sep 12
DLH6:32 pmDuluth Intl
5h 57m
1 stop
DEN11:29 pmDenver Intl
$323
United Airlines
Aug 13
DEN3:50 pmDenver Intl
6h 32m
1 stop
DLH11:22 pmDuluth Intl
Aug 19
DLH6:23 pmDuluth Intl
6h 30m
1 stop
DEN11:53 pmDenver Intl
$368

Delta flights from Colorado to Duluth

Our best Delta deals on Colorado to Duluth flight tickets
Delta
Oct 1
DEN6:15 amDenver Intl
3h 48m
1 stop
DLH11:03 amDuluth Intl
Oct 4
DLH5:15 amDuluth Intl
5h 48m
1 stop
DEN10:03 amDenver Intl
$322
Delta
Sep 9
DEN3:58 pmDenver Intl
5h 37m
1 stop
DLH10:35 pmDuluth Intl
Sep 18
DLH8:10 amDuluth Intl
16h 25m
1 stop
DEN11:35 pmDenver Intl
$358
Delta
Sep 8
DEN3:58 pmDenver Intl
5h 37m
1 stop
DLH10:35 pmDuluth Intl
Sep 18
DLH8:10 amDuluth Intl
16h 25m
1 stop
DEN11:35 pmDenver Intl
$381

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Colorado to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Fri 9/11

4:00 pm-11:20 pm

1 stop6h 20m

Duluth Intl

Fri 9/18

6:24 pm-11:29 pm

1 stop6h 05m

$308

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Sat 9/19

4:06 pm-11:20 pm

1 stop6h 14m

Duluth Intl

Sat 9/26

3:10 pm-9:44 pm

1 stop7h 34m

$308

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Sat 9/12

4:06 pm-11:20 pm

1 stop6h 14m

Duluth Intl

Mon 9/14

6:24 pm-11:28 pm

1 stop6h 04m

$308

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Thu 10/22

3:47 pm-11:22 pm

1 stop6h 35m

Duluth Intl

Sat 10/24

7:45 am-12:45 pm

1 stop6h 00m

$308

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Mon 8/31

4:40 pm-11:22 pm

1 stop5h 42m

Duluth Intl

Sun 9/6

6:23 pm-11:53 pm

1 stop6h 30m

$308

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Sat 9/19

7:45 am-2:29 pm

1 stop5h 44m

Duluth Intl

Sat 9/26

3:10 pm-7:45 pm

1 stop5h 35m

$308

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Thu 10/29

11:07 am-7:12 pm

1 stop7h 05m

Duluth Intl

Sat 11/7

4:21 pm-8:10 pm

1 stop4h 49m

$322

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Thu 10/1

6:15 am-11:03 am

1 stop3h 48m

Duluth Intl

Sun 10/4

5:15 am-10:03 am

1 stop5h 48m

$322
Quickest round-trip

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Fri 10/30

6:00 am-11:44 am

1 stop4h 44m

Duluth Intl

Sun 11/1

12:35 pm-3:49 pm

1 stop4h 14m

$322

DenverDuluth

DEN Denver Intl - DLH Duluth Intl

DENDLH

Denver Intl

Sat 8/29

7:45 am-2:29 pm

1 stop5h 44m

Duluth Intl

Sat 9/12

6:32 pm-11:29 pm

1 stop5h 57m

$323

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Duluth from

How to get the cheapest flight ticket from Colorado to Duluth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Duluth?

The cheapest month to fly to Duluth from Colorado is in March. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Duluth from Colorado during February instead. Flights to Duluth in February, while not as cheap as those in March, still average around $0.

Can stopping save me money on Colorado to Duluth flights?

You could potentially save up to 12% on your flight if you consider stops on a Colorado to Duluth flight.

Cheap Colorado to Duluth flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Duluth

Fastest flight time

3h 48m

Direct flights

None
The fastest flight from Colorado to Duluth takes 3h 48m
There are no direct flights from Colorado to Duluth. There are no popular flight routes from Colorado to Duluth.
Search flight deals

Frequently asked questions about flying from Colorado to Duluth

  • When did momondo last update prices for flights from Colorado to Duluth Intl Airport?

    Prices for flights from Colorado to Duluth Intl Airport were last updated today.

  • How many operators does momondo search for flights from Colorado to Duluth Intl Airport?

  • How old do you have to be to fly from Colorado to Duluth Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Duluth Intl Airport.

  • What documentation or ID do you need to fly to Duluth Intl Airport?

    The travel and health documents you'll need for your trip to Duluth Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Duluth Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Duluth

Compare and see reviews for airlines that fly from Colorado to Duluth with momondo
Airline
Rating
Free Cancellation
Price
Sun Country AirPriceFrom $68Free CancellationRating
6.7
319 reviews
Search Sun Country Air flights
DeltaPriceFrom $173Free CancellationRating
7.8
8,500 reviews
Search Delta flights
United AirlinesPriceFrom $218Free CancellationRating
7.4
10,100 reviews
Search United Airlines flights

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior
Cloquet
Hayward

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Duluth?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Colorado to Duluth. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Colorado to Duluth with flexible booking policies on momondo?

Flights from Colorado to Duluth with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Duluth?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Duluth from Colorado.

I’m not ready to book a flight from Colorado to Duluth right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Duluth from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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