ORD - BLL

$580 Find Cheap Flights from Chicago to Billund

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Billund departing on 8/19. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Billund

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Billund, 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 Chicago to Billund, as well as popular online travel agencies
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Cheap Flights from Chicago to Billund

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

Recent round-trip flight deals from Chicago to Billund

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chicago to Billund.
Discover the best prices for you by selecting your travel dates on KAYAK.
Scandinavian Airlines Logo
7:15 pm - 3:05 pmORD-BLL
12h 50m1 stop
Scandinavian Airlines Logo
9:55 am - 4:10 pmBLL-ORD
13h 15m1 stop
$580Scandinavian Airlines
Find Deal
Tue, Aug 19 - Tue, Aug 26
Air Canada Logo
8:40 am - 2:00 pmORD-BLL
22h 20m2 stops
Air Canada Logo
6:00 am - 8:16 pmBLL-ORD
21h 16m2 stops
$583Air Canada
Find Deal
Tue, Aug 19 - Tue, Aug 26
 Logo
5:10 pm - 10:25 pmORD-BLL
22h 15m1 stop
 Logo
6:00 am - 2:10 pmBLL-ORD
15h 10m1 stop
Tue, Aug 19 - Tue, Aug 26
Delta Logo
10:35 am - 11:05 amORD-BLL
17h 30m2 stops
Delta Logo
10:15 am - 2:10 pmBLL-ORD
10h 55m1 stop
$593Delta
Find Deal
Tue, Aug 19 - Tue, Aug 26
Delta Logo
10:35 am - 11:05 amORD-BLL
17h 30m2 stops
Delta Logo
6:00 am - 4:46 pmBLL-ORD
17h 46m2 stops
$603Delta
Find Deal
Tue, Aug 19 - Tue, Aug 26
 Logo
10:40 am - 2:00 pmORD-BLL
20h 20m2 stops
 Logo
6:00 am - 12:55 pmBLL-ORD
13h 55m1 stop
Tue, Jun 17 - Tue, Jun 24
KLM Logo
4:20 pm - 9:35 amORD-BLL
10h 15m1 stop
KLM Logo
6:00 am - 2:10 pmBLL-ORD
15h 10m1 stop
$808KLM
Find Deal
Tue, Jun 17 - Tue, Jun 24
KLM Logo
5:39 pm - 1:30 pmORD-BLL
12h 51m2 stops
KLM Logo
6:35 pm - 2:10 pmBLL-ORD
26h 35m1 stop
$881KLM
Find Deal
Tue, Jun 17 - Tue, Jun 24
Lufthansa Logo
9:40 pm - 10:10 amORD-BLL
29h 30m2 stops
Lufthansa Logo
6:00 am - 12:55 pmBLL-ORD
13h 55m2 stops
$1,050Lufthansa
Find Deal
Sun, Jul 27 - Sun, Aug 3
Lufthansa Logo
9:40 pm - 11:15 pmORD-BLL
18h 35m1 stop
Lufthansa Logo
6:00 am - 12:55 pmBLL-ORD
13h 55m1 stop
$1,158Lufthansa
Find Deal
Sat, Jun 14 - Sat, Jun 21
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KAYAK's insights & trends for Chicago to Billund flights

Get data-powered insights and trends into flights from Chicago to Billund 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 Chicago to Billund?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Billund clicked on KAYAK for each day over the last 12 months.

When flying from Chicago to Billund, you should consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Saturdays and the most expensive ones on Wednesdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Billund, 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 Chicago O'Hare Intl Airport to Billund is November, where tickets cost $539 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $1,603 and $990 respectively.

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$580
Best time to beat the crowds but there is an average 100% increase in price.
Most popular time to fly with an average 23% increase in price.
Flight from Chicago to Billund

When to book flights from Chicago to Billund

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

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

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Billund was $706 for a one-way ticket and $580 for a round-trip.

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

    Yes

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

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

  • Which airline alliances offer flights from Chicago to Billund?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Chicago and Billund, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Chicago to Billund, KLM or Scandinavian Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Billund are KLM and Scandinavian Airlines. With an average price for the route of $898 and an overall rating of 7.8, KLM is the most popular choice. Scandinavian Airlines is also a great choice for the route, with an average price of $945 and an overall rating of 7.3.

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

    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 Chicago to Billund.

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

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

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

    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 Billund from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from Chicago to Billund

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Billund. 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 Chicago to Billund? 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.
7.8
KLMOverall score based on 1334 reviews
7.1Entertainment
8.4Crew
7.8Boarding
7.2Food
7.7Comfort
Airline reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

8.0 ExcellentShereen, Apr 2025AMS - YUL
Read more KLM reviews

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

Very helpful in getting us off the plane first to make a tight connection.

Very unfriendly approach to me when you rescheduled my return flight due to your delay. No help to address my health concerns because I am diabetics and had orthopedic problems. No clear explanation where to clear customs. I had poor customer service

The seats were really cramped. The high backs on the chairs made you feel claustrophobic.

Boarding was chaotic and the flight left late but arrived at a decent time. This may have been because of the sxsw festival that was going on.

The flight got canceled and you just send an email in the middle of the night and no solution to how to get on the next flight or provide other solutions.

They were all bad because SAS was at fault and cost me my time. I will never fly SAS again.

You cost me my time and did not compensate properly. Gfy.

Missed a connecting flight and SAS was at fault. I was awarded a $20 voucher in exchange for 8 hours of my time? Gfy.

Seat was lumpier than I’ve ever remembered it to be although comfortable when tilted back. I don’t recall being that hungry after being served food from SAS before. Flight attendant on the second flight to Aalborg seemed to be having a bad day.

Please see my comments for the flight from Chicago to Copenhagen

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

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

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