$133 Cheap Delta flights Denver (DEN) to Duluth (DLH)

Scoring cheap one-way Delta Air Lines flights from DEN to DLH from $133 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $238 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Delta Air Lines flights to Duluth are often cheaper in the off-peak months of January and February. Whether you need a return or one-way ticket, you could find a better deal then.

For cheap Delta Air Lines fares from Denver Intl. Airport (DEN) to Duluth Intl. Airport (DLH), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the overall cost. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Click on our “Nonstop” filter when looking for direct Delta Air Lines flights from DEN to DLH. You can also compare other carriers offering the same direct trip.

Search Delta Air Lines’s earliest flights from DEN to DLH by checking the “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Get on a Delta Air Lines flight from Denver Intl. Airport (DEN) to Duluth, and you’ll probably arrive at Duluth Intl. Airport (DLH). This is the airline’s primary hub here.

With a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a popular option for many passengers flying from DEN to DLH. Plus, if you’re a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s generally possible to cancel or modify your flight, although there may be additional charges if your booking was made over 24 hours ago. Need to keep your options open? Make use of Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t charge extra if you have to alter your plans. To modify your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more information.