BLL - DEN

$617 Find Cheap Flights from Billund to Denver

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Billund to Denver departing on 1/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Billund to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Billund to Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$617
Overall average: $614
United Airlines
sáb. 1/17mar. 1/20
BLL - DEN • 2 stops
Cheapest one-way
Multiple Airlines
lun. 12/15
BLL - DEN • multi-stop
When to book
8 weeks
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 17% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Billund to Denver (BLL-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billund to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billund to Denver

sáb., ene. 17 - mar., ene. 20
United Airlines Logo
6:45 am - 6:12 pm
BLL
-
DEN
19h 27m2 stops
United Airlines Logo
3:55 pm - 1:40 pm
DEN
-
BLL
13h 45m1 stop
$617United Airlines
sáb., ene. 17 - mar., ene. 20
United Airlines Logo
6:45 am - 6:12 pm
BLL
-
DEN
19h 27m2 stops
United Airlines Logo
10:10 am - 1:40 pm
DEN
-
BLL
19h 30m2 stops
$668United Airlines
sáb., ene. 17 - mar., ene. 20
United Airlines Logo
6:45 am - 1:40 pm
BLL
-
DEN
14h 55m1 stop
United Airlines Logo
3:55 pm - 1:40 pm
DEN
-
BLL
13h 45m1 stop
$887United Airlines
jue., ene. 15 - lun., ene. 19
British Airways Logo
1:00 pm - 11:16 pm
BLL
-
DEN
18h 16m2 stops
British Airways Logo
4:30 pm - 12:30 pm
DEN
-
BLL
36h 00m2 stops
$4,567British Airways
Booking Insights

KAYAK's insights & trends for Billund to Denver flights

Get data-powered insights and trends into flights from Billund to Denver to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Billund to Denver?

The average price of all round-trip flights from Billund to Denver clicked on KAYAK for each day over the last 12 months.

For Billund to Denver, Thursday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Denver back to Billund, the best deals are generally found on Tuesday, with Sunday being the most expensive.

What is the cheapest month to fly from Billund to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Billund to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Billund to Denver is February, where tickets cost $603 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $995 and $926 respectively.

How far in advance should I book a flight from Billund to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Billund to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Billund to Denver, you should book around 8 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$617
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Billund to Denver

When to book flights from Billund to Denver

Are your dates flexible? Find out the best times to travel from Billund to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Billund to Denver

  • What is the cheapest flight from Billund to Denver?

    In the last 3 days, the lowest price for a flight from Billund to Denver was $617 for a round-trip ticket.

  • Do I need a passport to fly between Billund and Denver?

    A passport is required to fly from Billund to Denver.

  • Which aircraft models fly most regularly from Billund to Denver?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Billund to Denver?

    Star Alliance is the only airline alliance operating flights between Billund and Denver.

  • How does KAYAK find such low prices on flights from Billund to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Billund to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Billund to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Billund is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Billund to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Billund with another airline. Booking your flights between Billund and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Billund to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Billund up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Billund to Denver

 
See real verified KAYAK customer reviews for airlines flying from Billund to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Billund to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
LufthansaOverall score based on 7631 reviews
7.6Crew
6.4Entertainment
6.3Food
7.0Boarding
6.8Comfort
Airline reviews

Booked seats (paid extra) online and found they didn’t exist on the flight. We were then separated from the rest of our party. Given seats in the very back of the plane. We will not fly Discover or Lufthansa again. We will not book flights or travel through Kayak again!

4.0 OkayAnonymous, Dec 2025
FRA - TPA
Read more Lufthansa reviews

Booked seats (paid extra) online and found they didn’t exist on the flight. We were then separated from the rest of our party. Given seats in the very back of the plane. We will not fly Discover or Lufthansa again. We will not book flights or travel through Kayak again!

Had a few open seats and could use it for a great rest ful journey

It was very good. Service was friendly and efficient, and food was good.

Airline food is airline food, but the plane was wonderful and the seating comfort outstanding. One of my best flights in quite a while.

Crew was outstanding, helpful and friendly. Food is deteriorating. The snack at the end of the flight was not good, a greasy moosh of toast cheese snd other unidentifiable ingredients. Coming from Germany a pretzl with butter would have been better. Entertainment had a great selection.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything you need to know for your flight from Billund to Denver

Information on your arrival and departure airports

Billund (BLL)
Denver (DEN)