$212+ Cheap flights from Duluth (DLH) to Colorado
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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
DLH — DEN
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Duluth to Colorado with Cheapflights
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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
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Cheapest flights from Duluth to ColoradoExplore the most affordable flight options available from Duluth to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
Explore the most affordable flight options available from Duluth to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:24 pm -
1 stop6h 06m
Tue 9/154:40 pm -
1 stop5h 40m
Deal found 8/18![United Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:18 am -
1 stop4h 50m
Tue 9/155:45 pm -
1 stop3h 50m
Deal found 8/16![Delta logo]()
$322
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:24 pm -
1 stop6h 05m
Tue 9/152:50 pm -
1 stop7h 30m
Deal found 8/16![United Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:41 am -
1 stop4h 42m
Sat 9/123:58 pm -
1 stop5h 37m
Deal found 8/16![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:10 am -
1 stop4h 58m
Sun 12/136:15 pm -
1 stop3h 36m
Deal found 8/17![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:23 pm -
1 stop6h 30m
Fri 9/114:00 pm -
1 stop6h 20m
Deal found 8/18![United Airlines logo]()
$350
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:45 am -
1 stop8h 32m
Wed 10/287:45 am -
1 stop5h 45m
Deal found 8/17![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:18 am -
1 stop4h 50m
Mon 9/145:45 pm -
1 stop16h 18m
Deal found 8/16![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:23 pm -
1 stop6h 31m
Wed 9/23:50 pm -
1 stop6h 32m
Deal found 8/18![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:41 am -
1 stop4h 42m
Mon 9/145:45 pm -
1 stop16h 18m
Deal found 8/16![Delta logo]()
$373
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:24 pm -
1 stop6h 05m
Mon 9/214:40 pm -
1 stop5h 40m
Deal found 8/15![United Airlines logo]()
$378
Best flights from Duluth to ColoradoDiscover carefully curated flight deals from Duluth to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
Discover carefully curated flight deals from Duluth to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:23 pm -
1 stop6h 31m
Wed 9/23:50 pm -
1 stop6h 32m
Deal found 8/14![United Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:10 am -
1 stop4h 58m
Sun 12/136:15 pm -
1 stop3h 36m
Deal found 8/17![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:45 am -
1 stop8h 32m
Wed 10/287:45 am -
1 stop5h 45m
Deal found 8/17![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/143:06 pm -
1 stop8h 23m
Wed 11/183:01 pm -
1 stop7h 13m
Deal found 8/18![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:00 am -
1 stop6h 04m
Mon 10/126:14 pm -
1 stop3h 43m
Deal found 8/15![Delta logo]()
$435
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:06 pm -
1 stop5h 39m
Wed 11/43:01 pm -
1 stop7h 13m
Deal found 8/17![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:45 am -
1 stop8h 32m
Sat 9/52:50 pm -
1 stop7h 32m
Deal found 8/17![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:24 pm -
1 stop6h 04m
Fri 9/252:49 pm -
1 stop7h 33m
Deal found 8/15![United Airlines logo]()
$425
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:24 pm -
1 stop6h 05m
Mon 9/214:40 pm -
1 stop5h 40m
Deal found 8/16![United Airlines logo]()
$467
Last-minute flights from Duluth to ColoradoDiscover last-minute flight deals from Duluth to Colorado. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Duluth to Colorado. Data last updated August 19, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:45 am -
1 stop6h 00m
Wed 9/24:40 pm -
1 stop5h 42m
Deal found 8/18![United Airlines logo]()
$383
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:23 pm -
1 stop6h 31m
Wed 9/23:50 pm -
1 stop6h 32m
Deal found 8/18![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:41 am -
1 stop4h 42m
Wed 9/26:00 am -
1 stop4h 01m
Deal found 8/18![Delta logo]()
$385
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:23 pm -
1 stop6h 30m
Fri 9/114:00 pm -
1 stop6h 20m
Deal found 8/18![United Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:41 am -
1 stop4h 42m
Sat 9/123:58 pm -
1 stop5h 37m
Deal found 8/16![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:41 am -
1 stop4h 42m
Mon 9/145:45 pm -
1 stop16h 18m
Deal found 8/16![Delta logo]()
$373
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:18 am -
1 stop4h 50m
Tue 9/155:45 pm -
1 stop3h 50m
Deal found 8/16![Delta logo]()
$322
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:18 am -
1 stop4h 50m
Mon 9/145:45 pm -
1 stop16h 18m
Deal found 8/16![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:24 pm -
1 stop6h 05m
Tue 9/152:50 pm -
1 stop7h 30m
Deal found 8/16![United Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:24 pm -
1 stop6h 06m
Tue 9/154:40 pm -
1 stop5h 40m
Deal found 8/18![United Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:10 am -
1 stop4h 58m
Sun 12/136:15 pm -
1 stop3h 36m
Deal found 8/17![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:24 pm -
1 stop6h 05m
Mon 9/214:40 pm -
1 stop5h 40m
Deal found 8/15![United Airlines logo]()
$378
One-way flights from Duluth to ColoradoSearch for one-way flight options from Duluth to Colorado. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
Search for one-way flight options from Duluth to Colorado. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:45 am -
1 stop7h 47m
Deal found 8/16![United Airlines logo]()
$212
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:10 pm -
1 stop16h 29m
Deal found 8/18![United Airlines logo]()
$410
Find flight deals from Duluth to Colorado
Keep the following information in mind while searching for Duluth to Colorado flight deals. Data was last updated August 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $308 (United Airlines) |
One-way from | $212 (United Airlines) |
Popular in | June |
Cheapest in | December |
Average price | $468 |
Cheapflights Fare Finder
Customize your flight search to find flights from Duluth to Colorado 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, Cheapflights users made 7,457,451 searches. Data last updated August 19, 2026.
Use the filters below to find and compare flights from Duluth to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Sat 8/29
6:23 pm-11:54 pm
1 stop6h 31m
Denver Intl
Wed 9/2
3:50 pm-11:22 pm
1 stop6h 32m
$338
Quickest round-trip
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Sat 9/12
8:10 am-12:08 pm
1 stop4h 58m
Denver Intl
Sun 12/13
6:15 pm-10:51 pm
1 stop3h 36m
$345
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Thu 10/22
7:45 am-3:17 pm
1 stop8h 32m
Denver Intl
Wed 10/28
7:45 am-2:30 pm
1 stop5h 45m
$353
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Sat 11/14
3:06 pm-10:29 pm
1 stop8h 23m
Denver Intl
Wed 11/18
3:01 pm-11:14 pm
1 stop7h 13m
$388
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Sat 10/31
3:06 pm-7:45 pm
1 stop5h 39m
Denver Intl
Wed 11/4
3:01 pm-11:14 pm
1 stop7h 13m
$388
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Tue 9/1
7:45 am-3:17 pm
1 stop8h 32m
Denver Intl
Sat 9/5
2:50 pm-11:22 pm
1 stop7h 32m
$418
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Mon 9/21
6:24 pm-11:28 pm
1 stop6h 04m
Denver Intl
Fri 9/25
2:49 pm-11:22 pm
1 stop7h 33m
$425
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Thu 10/8
7:00 am-12:04 pm
1 stop6h 04m
Denver Intl
Mon 10/12
6:14 pm-10:57 pm
1 stop3h 43m
$435
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Fri 9/18
6:24 pm-11:29 pm
1 stop6h 05m
Denver Intl
Mon 9/21
4:40 pm-11:20 pm
1 stop5h 40m
$467
Cheapest one-way
Quickest one-way
DuluthDenver
DLH Duluth Intl - DEN Denver Intl
DLHDEN
Duluth Intl
Sat 10/3
7:45 am-2:32 pm
1 stop7h 47m
$212
Showing 1-10 of 11 resultsSorted by cheapest first
Best time to book a flight from Duluth to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Duluth with our price prediction graph.
DLH-DEN
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 Duluth to Colorado
DLH-USCO
DLH-DEN
What is the cheapest month to book a flight from Duluth to Colorado?
Currently, December is the cheapest month in which you can book a flight from Duluth to Colorado (average of $170). Flying from Duluth to Colorado in June is currently the most expensive (average of $662). 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.
How much does it cost to fly round-trip from Duluth to Colorado?
Airfare is below average for this route at the moment.
Duluth to Colorado flights typically cost between $373 and $558 in September.The cheapest round-trip price found within the last 5 days was $308 on United Airlines (Sep 10-Sep 15).
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated August 19, 2026.
Get a feel of what it's like to fly with Delta and United Airlines from Duluth to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodMoishe,Oct 2024
LGA - DEN
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodMoishe,Oct 2024
LGA - DEN
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
6.0
GoodMoishe,Oct 2024
LGA - DEN
Related info for your journey
Find useful and relevant information for your journey from Duluth to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
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Duluth and Colorado flights
Browse other Duluth and Colorado flight options. Last updated on August 19, 2026.
Popular flight searches
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Duluth to Colorado flights
Consider these flights traveling from Duluth to Colorado.
Top 2 airlines flying from Duluth to Colorado
Discover the top 2 airlines that operate flights from Duluth to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$371 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$266 | Average$403 | FlexibilityNo cancel fee | On-time69% |