$343 Cheap Flights from Denver (DEN) to Billund (BLL)

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Denver to Billund Flights

The cheapest times to fly from Denver to Billund

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 Billund are during the month of November. You can find some of the cheapest flights from Denver to Billund with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Denver to Billund

Sunday is one of the best days to book for cheap flights from Denver to Billund: 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 Billund

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 Billund in 2026. You can also book with separate airlines for your outbound and return journeys, from $343 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 Billund 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 Billund 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.

Frequently Asked Questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Billund (BLL) cost?

You can find cheap one-way flights from $343 and cheap return flights $763 Denver, CO (DEN-Denver Intl.) to Billund (BLL) with Expedia. Return flights often range between $594 and $4355. 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 Billund (BLL) 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 Billund (BLL)?

The cheapest month to fly from DEN to BLL is November 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 Billund (BLL)?

Enter DEN to BLL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Billund (BLL)?

To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Billund (BLL), 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 Billund (BLL)?

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 Billund (BLL)?

Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from DEN to BLL. To compare more early flights, use 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 Billund (BLL)?

The most popular departure times for flights from Denver, CO (DEN) to Billund (BLL) are in the late morning, from 9am to noon. About 37% of passengers prefer this time window. Many major carriers, including Delta, United Airlines, and Lufthansa, offer flights during this window. This timing is favored because it allows you to travel early in the day, maximizing your time at your destination.

How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Billund (BLL)?

Flights from DEN to BLL with one stop typically take around 13 hours 30 minutes, covering approximately 4,782 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 Billund (BLL)?

Business class is available on flights from DEN to BLL. Airlines that offer business class service on this route include:

• Lufthansa
• United Airlines
• Delta Air Lines
• Edelweiss Air
• Air Canada
• British Airways
• American Airlines

First class is available with Lufthansa.

How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Billund (BLL) flight with Expedia?

It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Billund (BLL) 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.

Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Billund (BLL) at the last minute?

Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Billund (BLL) 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 Billund (BLL) flight and hotel package?

Securing a Denver, CO (DEN-Denver Intl.) to Billund (BLL) flight and hotel package 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 Billund (BLL)?

If you booked your Denver, CO (DEN-Denver Intl.) to Billund (BLL) 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.