BLL - ORD

$568 Find Cheap Flights from Billund to Chicago

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 Chicago departing on 4/25. 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 Chicago O'Hare Intl Airport

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

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Everything you should know

Cheapest round-trip
$568
Typical prices: $809-$565
British Airways
sab 4/25mer 4/29
BLL - ORD • 1 stop
Top airlines
British Airways
Cheapest • from $568 (round-trip)
Lufthansa
Best reviews • 6.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Billund and Chicago. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 30% price drop
July
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 Chicago!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Billund to Chicago (BLL-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billund to Chicago 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 Chicago

sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 6:15 pm
BLL
-
ORD
12h 45m
1 stop
British Airways Logo
7:05 pm - 4:20 pm
ORD
-
BLL
14h 15m
1 stop
$568British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 6:15 pm
BLL
-
ORD
12h 45m
1 stop
British Airways Logo
4:36 pm - 4:20 pm
ORD
-
BLL
16h 44m
2 stops
$572British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 6:15 pm
BLL
-
ORD
12h 45m
1 stop
British Airways Logo
7:05 pm - 4:20 pm
ORD
-
BLL
14h 15m
1 stop
$582British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 6:15 pm
BLL
-
ORD
12h 45m
1 stop
British Airways Logo
5:00 pm - 12:05 pm
ORD
-
BLL
12h 05m
1 stop
$584British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 6:15 pm
BLL
-
ORD
12h 45m
1 stop
British Airways Logo
4:36 pm - 4:20 pm
ORD
-
BLL
16h 44m
2 stops
$588British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 11:54 pm
BLL
-
ORD
18h 24m
2 stops
British Airways Logo
9:15 pm - 4:20 pm
ORD
-
BLL
12h 05m
1 stop
$590British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 11:54 pm
BLL
-
ORD
18h 24m
2 stops
British Airways Logo
4:36 pm - 4:20 pm
ORD
-
BLL
16h 44m
2 stops
$600British Airways
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 11:54 pm
BLL
-
ORD
18h 24m
2 stops
British Airways Logo
4:36 pm - 4:20 pm
ORD
-
BLL
16h 44m
2 stops
$601British Airways
sab, apr 25 - mer, apr 29
Lufthansa Logo
6:00 am - 7:55 pm
BLL
-
ORD
20h 55m
1 stop
Lufthansa Logo
6:15 pm - 2:10 pm
ORD
-
BLL
12h 55m
1 stop
$609Lufthansa
sab, apr 25 - mer, apr 29
British Airways Logo
12:30 pm - 11:54 pm
BLL
-
ORD
18h 24m
2 stops
British Airways Logo
4:36 pm - 4:20 pm
ORD
-
BLL
16h 44m
2 stops
$617British Airways
Booking Insights

KAYAK's insights & trends for Billund to Chicago flights

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

How much is a round-trip flight from Billund to Chicago O'Hare Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Billund to Chicago O'Hare Intl Airport departing in April.

What is the cheapest month to fly from Billund to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Billund to Chicago O'Hare Intl Airport, 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 Chicago O'Hare Intl Airport is January, where tickets cost $465 (return) on average. On the other hand, the most expensive months are June and October, where the average cost of round-trip tickets is $902 and $767 respectively.

How far in advance should I book a flight from Billund to Chicago O'Hare Intl Airport?

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 Chicago O'Hare Intl Airport, 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 Chicago O'Hare Intl Airport, you should book around 5 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$568
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Billund to Chicago

When to book flights from Billund to Chicago

Are your dates flexible? Find out the best times to travel from Billund to Chicago 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 Billund to Chicago flights

  • What is the cheapest flight from Billund to Chicago O'Hare Intl Airport?

    In the last 3 days, the lowest price for a flight from Billund to Chicago O'Hare Intl Airport was $568 for a round-trip ticket.

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

    Yes, you’ll need a passport to travel to Chicago from Billund.

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

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

  • Which airline alliances offer flights from Billund to Chicago?

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

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

    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 Chicago.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago 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 Chicago?

    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 Chicago with an airline and back to Billund with another airline. Booking your flights between Billund and ORD 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 Chicago?

    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 Chicago 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 Chicago

 
See real verified KAYAK customer reviews for airlines flying from Billund to Chicago. 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 Chicago? 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 7885 reviews
6.8Comfort
7.6Crew
7.0Boarding
6.4Entertainment
6.3Food
Airline reviews

Everything could have been better. What needed to be wrong with United went wrong

2.0 MediocreD, Mar 2026
CAE - ORD
Read more Lufthansa reviews

Everything could have been better. What needed to be wrong with United went wrong

It was good. The seats in economy weren’t bad

Very good. Comfortable and I felt well taken care of from start to finish

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

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.

Food was poor quality and the screens for entertainment didn’t work properly

It was a short flight, everything was good with it.

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

Information on your arrival and departure airports

Billund (BLL)
O'Hare Intl (ORD)