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O'Hare Intl

$473+ Cheap flights from Billund (BLL) to O'Hare Intl (ORD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — ORD
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheapflights Tip: The best prices from Billund to Chicago O'Hare Intl are usually found in January or March, booked 34 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Billund to O'Hare Intl

Best flights from Billund to O'Hare Intl
Discover carefully curated flight deals from Billund to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This Ticket deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/291:00 pmBLL - ORD
1 stop12h 45mBritish Airways
Wed 2/45:10 pmORD - BLL
1 stop12h 00mBritish Airways
Deal found 12/26$473
This Ticket deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2412:05 pmBLL - ORD
2 stops16h 00mMultiple Airlines
Wed 1/281:57 pmORD - BLL
2 stops14h 23mMultiple Airlines
Deal found 12/27$533
This Ticket deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/241:05 pmBLL - ORD
1 stop12h 40mBritish Airways
Wed 1/285:10 pmORD - BLL
1 stop12h 00mBritish Airways
Deal found 12/27$479
This Ticket deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/221:00 pmBLL - ORD
1 stop12h 45mBritish Airways
Mon 1/2611:44 amORD - BLL
2 stops17h 36mBritish Airways
Deal found 12/25$479
This British Airways deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/141:05 pmBLL - ORD
1 stop12h 40mBritish Airways
Tue 2/179:45 pmORD - BLL
1 stop31h 25mBritish Airways
Deal found 12/25$545

Find flight deals from Billund to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Billund (BLL) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 28, 2025.

Round-trip from

$473
(Ticket)

Popular in

June

Cheapest in

January

Average price

$650
From Billund to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Billund to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from Billund to Chicago O'Hare Intl Airport that are best for you.

Fly from

Billund

Fly to

O'Hare Intl

Route

Depart

Return

Price

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 1/29

1:00 pm-6:45 pm

1 stop12h 45m

Chicago O'Hare Intl

Wed 2/4

5:10 pm-12:10 pm

1 stop12h 00m

$473

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 1/24

1:05 pm-6:45 pm

1 stop12h 40m

Chicago O'Hare Intl

Wed 1/28

5:10 pm-12:10 pm

1 stop12h 00m

$479

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 1/22

1:00 pm-6:45 pm

1 stop12h 45m

Chicago O'Hare Intl

Mon 1/26

11:44 am-12:20 pm

2 stops17h 36m

$479

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 1/24

12:05 pm-9:05 pm

2 stops16h 00m

Chicago O'Hare Intl

Wed 1/28

1:57 pm-11:20 am

2 stops14h 23m

$533

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 2/14

1:05 pm-6:45 pm

1 stop12h 40m

Chicago O'Hare Intl

Tue 2/17

9:45 pm-12:10 pm

1 stop31h 25m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Best time to book a flight from Billund to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Billund with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Billund to Chicago O'Hare Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Billund to O'Hare Intl. Price data was last updated on December 26, 2025.

To ensure you get the cheapest price possible for a flight from Billund to Chicago O'Hare Intl Airport, you should look to book at least 33 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Billund to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Billund to Chicago O'Hare Intl Airport (average of $408). Flying from Billund to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $638). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Billund to Chicago O'Hare Intl Airport?

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated December 28, 2025.
See what other customers who have flown with Lufthansa from Billund to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,658 reviews

Boarding

7.0

Entertainment

6.4

Crew

7.6

Comfort

6.8

Overall

6.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Djermouli,Dec 2025

FRA - SFO

I’m sorry the worst airline united food sales I’m diabetic plus high cholesterol pls seats it’s not comfortable plus screen tv broke I try to charge my phone don’t work I’m not flying with united airlines
Lufthansa
6.8
Okay
7,658 reviews
Lufthansa
6.8
Okay
7,658 reviews

Boarding

7.0

Entertainment

6.4

Crew

7.6

Comfort

6.8

Overall

6.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Djermouli,Dec 2025

FRA - SFO

I’m sorry the worst airline united food sales I’m diabetic plus high cholesterol pls seats it’s not comfortable plus screen tv broke I try to charge my phone don’t work I’m not flying with united airlines

Related info for your journey

Find useful and relevant information for your journey from Billund to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Billund to Chicago O'Hare Intl?

    Billund (BLL) is the airport you will fly out of if you book a flight from Billund to Chicago O'Hare Intl. You should not have trouble finding flights to Chicago O'Hare Intl from Billund; the airport handles an average of 0 outbound flights to Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Billund airport to Chicago O'Hare Intl. It is only a 1.7 mi journey to Billund (BLL) from Billund’s city center.

  • How long is the flight from Billund to Chicago O'Hare Intl Airport?

    A quick flight from Billund to Chicago O'Hare Intl Airport can take about 12h 45m. British Airways provides one of the quickest options available for as low as $473. There are 4136 mi between Billund and Chicago O'Hare Intl Airport.

  • What is the cheapest airline to fly from Billund to Chicago O'Hare Intl Airport round-trip?

    Our cheapest airline available from Billund to Chicago O'Hare Intl Airport is Lufthansa. Our recent data shows that you can find tickets from as low as $530 on this airline. Lufthansa is priced at 20% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Billund to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Billund to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billund to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billund to O'Hare Intl.

  • Can I find deals for business class flights from Billund to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Billund to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Billund to Chicago O'Hare Intl Airport (average of $408). Flying from Billund to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $638). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Kenosha
Warrenville
Waukegan
Aurora
Evanston

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Alternative routes for Billund to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Copenhagen to O'Hare Intl flights

Top airline flying from Billund to O'Hare Intl

Discover the top airline that operate flights from Billund to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$755FlexibilityNo cancel feeOn-time76%

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