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$227 Cheap Flights from Denver (DEN) to Duluth (DLH)

View $227 flight on Mon, Dec 7, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Duluth, MN (DLH-Duluth Intl.)

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Cheap Flights from Denver to Duluth (DEN-DLH)

Prices were available within the past 7 days and start at $227 for one-way flights and $328 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 28 - Mon, Nov 2
DEN
Denver
DLH
Duluth
$328 Roundtrip, found 20 hours ago
$328
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Oct 28 from Denver to Duluth, returning Mon, Nov 2, priced at $328 found 20 hours ago
United
Tue, Oct 13 - Tue, Oct 20
DEN
Denver
DLH
Duluth
$343 Roundtrip, found 1 day ago
$343
Roundtrip
found 1 day ago
Select United flight, departing Tue, Oct 13 from Denver to Duluth, returning Tue, Oct 20, priced at $343 found 1 day ago
Delta
Wed, Nov 11 - Sun, Nov 15
DEN
Denver
DLH
Duluth
$344 Roundtrip, found 8 hours ago
$344
Roundtrip
found 8 hours ago
Select Delta flight, departing Wed, Nov 11 from Denver to Duluth, returning Sun, Nov 15, priced at $344 found 8 hours ago
United
Fri, Oct 16 - Tue, Oct 20
DEN
Denver
DLH
Duluth
$358 Roundtrip, found 23 hours ago
$358
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Oct 16 from Denver to Duluth, returning Tue, Oct 20, priced at $358 found 23 hours ago
United
Sat, Nov 14 - Tue, Nov 17
DEN
Denver
DLH
Duluth
$361 Roundtrip, found 6 days ago
$361
Roundtrip
found 6 days ago
Select United flight, departing Sat, Nov 14 from Denver to Duluth, returning Tue, Nov 17, priced at $361 found 6 days ago
United
Tue, Oct 13 - Tue, Oct 20
DEN
Denver
DLH
Duluth
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select United flight, departing Tue, Oct 13 from Denver to Duluth, returning Tue, Oct 20, priced at $362 found 1 day ago
United
Thu, Jan 28 - Mon, Feb 1
DEN
Denver
DLH
Duluth
$363 Roundtrip, found 10 hours ago
$363
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Jan 28 from Denver to Duluth, returning Mon, Feb 1, priced at $363 found 10 hours ago
United
Wed, Nov 18 - Mon, Nov 23
DEN
Denver
DLH
Duluth
$364 Roundtrip, found 1 day ago
$364
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 18 from Denver to Duluth, returning Mon, Nov 23, priced at $364 found 1 day ago
Delta
Wed, Nov 11 - Sun, Nov 15
DEN
Denver
DLH
Duluth
$366 Roundtrip, found 8 hours ago
$366
Roundtrip
found 8 hours ago
Select Delta flight, departing Wed, Nov 11 from Denver to Duluth, returning Sun, Nov 15, priced at $366 found 8 hours ago
United
Tue, Dec 1 - Tue, Dec 8
DEN
Denver
DLH
Duluth
$372 Roundtrip, found 6 days ago
$372
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 1 from Denver to Duluth, returning Tue, Dec 8, priced at $372 found 6 days ago

Alternative airports near Duluth

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Duluth Intl. DLH. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $756
DLH
Duluth Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $756

What you need to know for your flight from Denver Intl. to Duluth Intl.

Denver (DEN) to Duluth (DLH) at a glance

Travelers seeking a journey from Denver (DEN) to Duluth (DLH) can explore a range of airlines on this domestic short-haul route. Whether you prefer a full-service airline or a low-cost option, you can compare various itineraries to find the best fit for your budget and schedule. Get ready to discover Duluth's iconic landmarks and vibrant neighborhoods as you check out essential details for flights from Denver International Airport to Duluth International Airport.

  • Fastest flight duration: around 3h 15m in-flight, plus roughly 1h 30m layover with one stop
  • Route distance: roughly 800 miles (1,290 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $105–$485, depending on seasonality and how far ahead you book

Flights from Denver International Airport (DEN) to Duluth International Airport (DLH)

Based on the latest traveler bookings, here are the top airlines preferred for flights from Denver to Duluth, typically featuring one-stop options with popular layovers at Minneapolis - St. Paul International Airport (MSP) and O'Hare International Airport (ORD), both with a layover time of around 1 hour and 30 minutes. These choices allow you to balance price, total travel time, and cabin class, helping you to create the best itinerary for your journey.

  • Delta: As a comprehensive airline, Delta provides one-stop service, dominating the route with about 60% of departures. One-way ticket prices generally fall between $120 and $475. Expect an in-flight duration of 3 hours and 15 minutes, with a total travel time of around 5 hours and 15 minutes, including layover.
  • United: United is another full-service airline that offers one-stop journeys, representing about 28% of the departures for this route. One-way fares usually range from $155 to $550. Travelers can anticipate an in-flight time of 3 hours and 15 minutes, while the entire trip takes approximately 5 hours and 15 minutes, factoring in a layover.
  • Sun Country Airlines: A budget-friendly option, Sun Country Airlines provides one-stop service, making up around 11% of the departures on this route. Their one-way fares typically range from $105 to $205. The flight duration is 3 hours and 15 minutes, with a total travel time of roughly 5 hours and 15 minutes, including layover.

Best time to fly from Denver (DEN) to Duluth (DLH)

The most popular months for travelers flying from Denver to Duluth are April, June, and September, when peak temperatures in Duluth reach up to 60.1°F in June. If you prefer quieter travel, consider December, the least busy time to visit with temperatures around 19.8°F and typically the lowest average one-way fare (around $194). Flight availability peaks in July, with approximately 11 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: December usually offers good deals with average one-way fare around $194, roughly 17% cheaper than the yearly average.
  • More budget-friendly months to fly: May, November, and January typically offer average one-way fares of around $205.
  • Most flight options: July has the highest number of flights from Denver to Duluth, with approximately 11 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January12.4°F (-10.9°C)Average7$210
February13.5°F (-10.3°C)Average8$283
March27.3°F (-2.6°C)Average8$294
April37.2°F (2.9°C)Moderately High8$218
May49.8°F (9.9°C)Average9$200
June60.1°F (15.6°C)Moderately High9$243
July67.5°F (19.7°C)Average11$223
August66.2°F (19.0°C)Average8$261
September59.0°F (15.0°C)Moderately High9$250
October45.7°F (7.6°C)Moderately Low8$226
November32.4°F (0.2°C)Moderately Low9$203
December19.8°F (-6.8°C)Moderately Low8$194

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Denver (DEN) to Duluth (DLH)

  • Fort Collins to Duluth (FNL-DLH): Fort Collins-Loveland Municipal Airport (FNL) is approximately 45 miles from Denver International Airport (DEN).
  • Denver to Hibbing (DEN-HIB): Chisholm-Hibbing Airport (HIB) lies about 49 miles from Duluth International Airport (DLH).
  • Colorado Springs to Duluth (COS-DLH): Colorado Springs Airport (COS) is roughly 73 miles distant from Denver International Airport (DEN).

How to find the best prices for flights from Denver (DEN) to Duluth (DLH)

Getting some of the best deals on flights from Denver to Duluth is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are generally available when booking at least two months in advance, although most travelers tend to book between two to eight weeks ahead. Departures in the morning, from 5 a.m. to noon, usually offer lower prices and are also the most popular flight times, while flying on Thursday provides both affordable rates and high demand among travelers.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Duluth hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Duluth International Airport from Denver International Airport

Duluth welcomes travelers from Denver with a range of transport options based on price, convenience, and proximity. Here's how to reach Duluth efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Duluth, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Duluth International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Duluth International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Duluth International Airport, both Duluth Transportation Center, a bus station, and Duluth Seaport, a seaport, are easily accessible by car, located about 7.4 miles and 7.2 miles away, respectively, making travel to these destinations straightforward.

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) cost?
You can find cheap one-way flights from $227 and cheap return flights from $328 Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) with Expedia. One-way flights usually range from $168 to $751, and return flights typically cost between $369 and $1824. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The cheapest month to fly from DEN to DLH is October when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
Enter DEN to DLH and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
Sun Country Airlines is one of the cheapest airlines offering connecting flights from Denver, CO (DEN) to Duluth, MN (DLH), with round-trip tickets starting from around $146. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The earliest flight from Denver International Airport (DEN) to Duluth International Airport (DLH) usually departs at about 12:45 AM. Delta operates this seasonal service, giving you a head start on your travels to Duluth. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
The most popular departure times for flights from Denver (DEN) to Duluth (DLH) are from 6am to 9am. About 32% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to start your day early and arrive in Duluth with plenty of time to enjoy your destination.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
A flight from DEN to DLH with a layover takes around 7 hours 30 minutes, with the route covering approximately 790 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
Select the "Business class" and "First class" filters when looking for DEN to DLH flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Duluth from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into Duluth Intl. (DLH) to reach Duluth. Some flights may connect through major hubs like Lambert-St. Louis Intl. (STL), Minneapolis - St. Paul Intl. (MSP), Dane County Regional (MSN) before reaching Duluth. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) Duluth Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.)?
If you booked your Denver, CO (DEN-Denver Intl.) to Duluth, MN (DLH-Duluth Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Denver Intl.
Destination airport
Duluth Intl.
Airlines serving
Delta, United
Roundtrip price
$328
Distance
790 mi

Book with confidence

Denver to Duluth Flights

The cheapest times to fly from Denver to Duluth

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Duluth are during the month of October. You can find some of the cheapest flights from Denver to Duluth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Duluth

Sunday is one of the best days to book for cheap flights from Denver to Duluth: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Duluth

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Duluth in 2026. You can also book with separate airlines for your outbound and return journeys, from $227 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Duluth flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Duluth airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Duluth Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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