How long is the flight from Colorado to Duluth?

A quick flight from Colorado to Duluth can take about 4h 17m. Delta provides one of the quickest options available for as low as $263. Colorado and Duluth are separated by a distance of 789 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Duluth ranges from 0.6 - 3.6 inches per month. August is typically the wettest month, when rainfall can reach 3.6 in. February is typically the driest time to visit Duluth when rainfall is around 0.6 in.

If weather is an important factor for your trip to Duluth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 12.2 F).

What are the most popular airlines that fly from Colorado to Duluth?

Consider Delta, Sun Country Air or United Airlines when booking your flight. These represent the most popular airlines when flying from Colorado to Duluth.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 25 days in advance, which can save you up to 349% on flights from Colorado to Duluth compared to booking the week you need them. Waiting 25 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $298. For sooner than that we have options available in the next 3 days from $328.

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

Our data shows that August tends to be the cheapest month to fly to Duluth from Colorado. Users have commonly found prices around $350 for the month, but tickets can be as low as $73. Due to multiple factors, prepare for potentially higher prices in March.

What airport do you fly into for flights to Duluth from Colorado?

Most people fly into Duluth Intl (DLH) if they book a flight to Duluth from Colorado. Duluth Intl is conveniently located just 5.8 mi from Duluth’s city center.

Can I find deals for flights from Colorado to Duluth that include hotel bookings?

Yes. In addition to deals on Colorado to Duluth flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Colorado to Duluth?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Duluth.

Can I find deals for business class flights from Colorado to Duluth?

Yes. Cheapflights offers flight deals from Colorado to Duluth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$134+ Cheap Flights from Colorado to Duluth

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Colorado to Duluth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Colorado to Duluth

Round-trip from	$263 (Delta)
One-way from	$134 (United Airlines)
Popular in	March
Cheapest in	August
Average price	$267

From Colorado to Duluth Intl

Search Deals

One-way flight from Colorado to Duluth Intl

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Colorado to Duluth

Cheapest flights from Colorado to Duluth
Explore the most affordable flight options available from Colorado to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Thu 10/236:05 amDEN - DLH

1 stop4h 17mDelta

Sun 10/267:50 amDLH - DEN

1 stop5h 49mDelta

Deal found 8/19

$263

Wed 11/56:05 amDEN - DLH

1 stop4h 17mDelta

Fri 11/712:02 pmDLH - DEN

1 stop4h 40mDelta

Deal found 8/19

$307

Thu 9/116:00 amDEN - DLH

1 stop7h 35mUnited Airlines

Mon 9/153:10 pmDLH - DEN

1 stop6h 02mUnited Airlines

Deal found 8/20

$308

Sat 9/62:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Wed 9/1011:20 amDLH - DEN

1 stop5h 19mUnited Airlines

Deal found 8/20

$313

Sat 9/61:25 pmDEN - DLH

1 stop7h 40mUnited Airlines

Tue 9/99:45 amDLH - DEN

1 stop5h 52mUnited Airlines

Deal found 8/20

$318

Sat 9/61:51 pmDEN - DLH

1 stop4h 30mDelta

Thu 9/117:50 amDLH - DEN

1 stop16h 18mDelta

Deal found 8/20

$333

Wed 9/32:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Sat 9/69:45 amDLH - DEN

1 stop6h 54mUnited Airlines

Deal found 8/18

$343

Wed 9/34:00 pmDEN - DLH

1 stop5h 46mDelta

Sat 9/610:55 amDLH - DEN

1 stop5h 33mDelta

Deal found 8/17

$373

Tue 9/167:48 amDEN - DLH

1 stop13h 17mUnited Airlines

Wed 9/249:45 amDLH - DEN

1 stop7h 50mUnited Airlines

Deal found 8/20

$382

Sat 9/202:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Sat 9/279:45 amDLH - DEN

1 stop7h 18mUnited Airlines

Deal found 8/17

$387

Tue 9/22:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Sat 9/69:45 amDLH - DEN

1 stop5h 52mUnited Airlines

Deal found 8/20

$397

Thu 9/1112:02 pmCOS - DLH

1 stop5h 28mUnited Airlines

Sat 9/139:45 amDLH - COS

2 stops12h 04mUnited Airlines

Deal found 8/19

$466

Best flights from Colorado to Duluth
Discover carefully curated flight deals from Colorado to Duluth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2025.

Thu 10/236:05 amDEN - DLH

1 stop4h 17mDelta

Sun 10/267:50 amDLH - DEN

1 stop5h 49mDelta

Deal found 8/19

$263

Mon 9/152:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Wed 9/249:45 amDLH - DEN

1 stop7h 50mUnited Airlines

Deal found 8/20

$308

Thu 12/46:55 pmDEN - DLH

1 stop3h 49mDelta

Sun 12/78:05 amDLH - DEN

1 stop5h 47mDelta

Deal found 8/18

$288

Thu 9/116:00 amDEN - DLH

1 stop7h 35mUnited Airlines

Mon 9/153:10 pmDLH - DEN

1 stop6h 02mUnited Airlines

Deal found 8/20

$308

Fri 10/246:55 pmDEN - DLH

1 stop3h 47mDelta

Sun 10/265:18 amDLH - DEN

1 stop5h 42mDelta

Deal found 8/19

$288

Sat 9/62:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Wed 9/1011:20 amDLH - DEN

1 stop5h 19mUnited Airlines

Deal found 8/20

$313

Wed 11/56:55 pmDEN - DLH

1 stop3h 47mDelta

Fri 11/712:02 pmDLH - DEN

1 stop4h 40mDelta

Deal found 8/18

$307

Sat 9/61:25 pmDEN - DLH

1 stop7h 40mUnited Airlines

Tue 9/99:45 amDLH - DEN

1 stop5h 52mUnited Airlines

Deal found 8/20

$318

Sat 9/274:00 pmDEN - DLH

1 stop5h 43mDelta

Sat 10/47:50 amDLH - DEN

1 stop5h 57mDelta

Deal found 8/19

$318

Thu 9/1112:02 pmCOS - DLH

1 stop5h 28mUnited Airlines

Sat 9/139:45 amDLH - COS

2 stops12h 04mUnited Airlines

Deal found 8/19

$466

Mon 9/812:02 pmCOS - DLH

1 stop5h 28mUnited Airlines

Fri 9/198:00 amDLH - COS

1 stop27h 56mUnited Airlines

Deal found 8/18

$514

Thu 12/48:00 amCOS - DLH

2 stops10h 34mDelta

Sun 12/75:10 amDLH - COS

2 stops8h 47mDelta

Deal found 8/18

$548

Last-minute flights from Colorado to Duluth
Discover last-minute flight deals from Colorado to Duluth. Data last updated August 20, 2025 and is based on user searches.

Tue 9/22:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Sat 9/69:45 amDLH - DEN

1 stop5h 52mUnited Airlines

Deal found 8/20

$397

Wed 9/32:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Sat 9/69:45 amDLH - DEN

1 stop6h 54mUnited Airlines

Deal found 8/18

$343

Wed 9/34:00 pmDEN - DLH

1 stop5h 46mDelta

Sat 9/610:55 amDLH - DEN

1 stop5h 33mDelta

Deal found 8/17

$373

Thu 9/44:00 pmDEN - DLH

1 stop5h 46mDelta

Sat 9/64:19 pmDLH - DEN

1 stop4h 36mDelta

Deal found 8/19

$402

Sat 9/62:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Wed 9/1011:20 amDLH - DEN

1 stop5h 19mUnited Airlines

Deal found 8/20

$313

Sat 9/61:25 pmDEN - DLH

1 stop7h 40mUnited Airlines

Tue 9/99:45 amDLH - DEN

1 stop5h 52mUnited Airlines

Deal found 8/20

$318

Sat 9/61:51 pmDEN - DLH

1 stop4h 30mDelta

Thu 9/117:50 amDLH - DEN

1 stop16h 18mDelta

Deal found 8/20

$333

Thu 9/116:00 amDEN - DLH

1 stop7h 35mUnited Airlines

Mon 9/153:10 pmDLH - DEN

1 stop6h 02mUnited Airlines

Deal found 8/20

$308

Thu 9/1112:02 pmCOS - DLH

1 stop5h 28mUnited Airlines

Sat 9/139:45 amDLH - COS

2 stops12h 04mUnited Airlines

Deal found 8/19

$466

Mon 9/152:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Wed 9/243:10 pmDLH - DEN

2 stops19h 55mUnited Airlines

Deal found 8/20

$410

Tue 9/167:48 amDEN - DLH

1 stop13h 17mUnited Airlines

Wed 9/249:45 amDLH - DEN

1 stop7h 50mUnited Airlines

Deal found 8/20

$382

Sat 9/202:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Sat 9/279:45 amDLH - DEN

1 stop7h 18mUnited Airlines

Deal found 8/17

$387

One-way flights from Colorado to Duluth
Search for one-way flight options from Colorado to Duluth. Find affordable one-way fares based on user searches. Data last updated August 20, 2025.

Sat 9/202:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Deal found 8/19

$134

Sat 9/611:11 amCOS - DLH

1 stop7h 10mDelta

Deal found 8/20

$173

Mon 9/812:02 pmCOS - DLH

1 stop5h 28mUnited Airlines

Deal found 8/20

$208

Mon 10/136:05 amDEN - DLH

1 stop4h 17mDelta

Deal found 8/18

$214

Fri 9/192:45 pmDEN - DLH

1 stop6h 20mUnited Airlines

Deal found 8/19

$284

Sun 9/711:11 amCOS - DLH

1 stop7h 10mDelta

Deal found 8/20

$284

Mon 9/81:10 pmCOS - DLH

2 stops8h 36mDelta

Deal found 8/20

$320

Mon 10/205:45 pmDEN - DLH

2 stops16h 00mUnited Airlines

Deal found 8/18

$322

Mon 10/138:25 pmDEN - DLH

2 stops17h 07mUnited Airlines

Deal found 8/18

$336

Thu 9/187:50 amDEN - DLH

2 stops13h 15mUnited Airlines

Deal found 8/19

$361

Thu 9/181:50 pmDEN - DLH

1 stop4h 23mDelta

Deal found 8/19

$374

Sun 9/76:25 pmCOS - DLH

2 stops19h 10mUnited Airlines

Deal found 8/20

$421

Fly from

Fly to

Route

Depart

Return

Price

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 10/23

6:05 am-11:22 am

1 stop4h 17m

Duluth Intl

Sun 10/26

7:50 am-12:39 pm

1 stop5h 49m

$263

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 12/4

6:55 pm-11:44 pm

1 stop3h 49m

Duluth Intl

Sun 12/7

8:05 am-12:52 pm

1 stop5h 47m

$288

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Fri 10/24

6:55 pm-11:42 pm

1 stop3h 47m

Duluth Intl

Sun 10/26

5:18 am-10:00 am

1 stop5h 42m

$288

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Wed 11/5

6:55 pm-11:42 pm

1 stop3h 47m

Duluth Intl

Fri 11/7

12:02 pm-3:42 pm

1 stop4h 40m

$307

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Mon 9/15

2:45 pm-10:05 pm

1 stop6h 20m

Duluth Intl

Wed 9/24

9:45 am-4:35 pm

1 stop7h 50m

$308

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Thu 9/11

6:00 am-2:35 pm

1 stop7h 35m

Duluth Intl

Mon 9/15

3:10 pm-8:12 pm

1 stop6h 02m

$308

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 9/6

2:45 pm-10:05 pm

1 stop6h 20m

Duluth Intl

Wed 9/10

11:20 am-3:39 pm

1 stop5h 19m

$313

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 9/6

1:25 pm-10:05 pm

1 stop7h 40m

Duluth Intl

Tue 9/9

9:45 am-2:37 pm

1 stop5h 52m

$318

DenverDuluth

DEN - DLH

DENDLH

Denver Intl

Sat 9/27

4:00 pm-10:43 pm

1 stop5h 43m

Duluth Intl

Sat 10/4

7:50 am-12:47 pm

1 stop5h 57m

$318

Colorado SpringsDuluth

COS - DLH

COSDLH

Colorado Springs

Thu 9/11

12:02 pm-6:30 pm

1 stop5h 28m

Duluth Intl

Sat 9/13

9:45 am-8:49 pm

2 stops12h 04m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 26 results

Best time to book a flight from Colorado to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Colorado with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Colorado to Duluth?

Currently, January is the cheapest month in which you can book a flight from Colorado to Duluth (average of $336). Flying from Colorado to Duluth in June is currently the most expensive (average of $476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to DLH?

When flying from Colorado to Duluth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

What airport do you fly into for flights to Duluth from Colorado?
Most people fly into Duluth Intl (DLH) if they book a flight to Duluth from Colorado. Duluth Intl is conveniently located just 5.8 mi from Duluth’s city center.
How long is the flight from Colorado to Duluth?
A quick flight from Colorado to Duluth can take about 4h 17m. Delta provides one of the quickest options available for as low as $263. Colorado and Duluth are separated by a distance of 789 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Colorado to Duluth that include hotel bookings?
Yes. In addition to deals on Colorado to Duluth flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado to Duluth?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Duluth.
Can I find deals for business class flights from Colorado to Duluth?
Yes. Cheapflights offers flight deals from Colorado to Duluth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Colorado to Duluth?
Currently, January is the cheapest month in which you can book a flight from Colorado to Duluth (average of $336). Flying from Colorado to Duluth in June is currently the most expensive (average of $476). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Two Harbors

Superior

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Colorado to Duluth

Seattle to Minneapolis flights

Dulles Intl to Minneapolis flights

Dallas/Fort Worth to Minneapolis flights

Reagan-National to Minneapolis flights

John F Kennedy Intl to Minneapolis flights

LaGuardia to Minneapolis flights

Baltimore to Minneapolis flights

Newark to Minneapolis flights

San Francisco to Minneapolis flights

Pittsburgh to Minneapolis flights

Los Angeles to Minneapolis flights

Denver to Minneapolis flights

Philadelphia to Minneapolis flights

Boston to Minneapolis flights

O'Hare Intl to Minneapolis flights

Hobby to Minneapolis flights

San Diego to Minneapolis flights

George Bush Intcntl to Minneapolis flights

Orlando to Minneapolis flights

Sky Harbor Intl to Minneapolis flights

Cincinnati to Minneapolis flights

Portland to Minneapolis flights

Charlotte to Minneapolis flights

Santa Ana to Minneapolis flights

Atlanta to Minneapolis flights

Sacramento to Minneapolis flights

Midway to Minneapolis flights

Austin to Minneapolis flights

Raleigh to Minneapolis flights

Tampa to Minneapolis flights

Detroit to Minneapolis flights

Indianapolis to Minneapolis flights

Miami to Minneapolis flights

Ontario to Minneapolis flights

Salt Lake City to Minneapolis flights

Love Field to Minneapolis flights

Fort Lauderdale to Minneapolis flights

Cleveland to Minneapolis flights

Kansas City to Minneapolis flights

Jacksonville to Minneapolis flights

Columbus to Minneapolis flights

San Jose to Minneapolis flights

New Orleans to Minneapolis flights

St. Louis to Minneapolis flights

O'Hare Intl to Duluth flights

Boise to Minneapolis flights

Nashville to Minneapolis flights

Hartford to Minneapolis flights

Grand Rapids to Minneapolis flights

San Antonio to Minneapolis flights

Top 3 airlines flying from Colorado to Duluth

Airline	Cheapest	Average	Flexibility	On-time
Sun Country Air	Cheapest$68	Average$176	FlexibilityNo cancel fee	On-time83%
Delta	Cheapest$221	Average$348	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$250	Average$468	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$134+ Cheap flights from Colorado to Duluth (DLH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado to Duluth with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Colorado to Duluth

Keep the following information in mind while searching for Colorado to Duluth flight deals. Data was last updated August 20, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Colorado to Duluth

Cheapest flights from Colorado to DuluthExplore the most affordable flight options available from Colorado to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Explore the most affordable flight options available from Colorado to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado to Duluth that are best for you.

Best time to book a flight from Colorado to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Colorado with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Colorado to Duluth?

What is the cheapest time of day to fly from CO to DLH?

Find hourly flight availability from Colorado to Duluth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Duluth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Duluth from Colorado?

How long is the flight from Colorado to Duluth?

Can I find deals for flights from Colorado to Duluth that include hotel bookings?

How can I find direct flights from Colorado to Duluth?

Can I find deals for business class flights from Colorado to Duluth?

What is the cheapest month to book a flight from Colorado to Duluth?

Traveling to a place near Duluth?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Duluth

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Colorado to Duluth

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Colorado to Duluth
Explore the most affordable flight options available from Colorado to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.