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O'Hare Intl

$353+ Cheap flights from Billund (BLL) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — ORD
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
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Cheap flight deals from Billund to O'Hare Intl

Cheapest flights from Billund to O'Hare Intl
Explore the most affordable flight options available from Billund to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.

This Travelis deal was found by Cheapflights users on 2/10. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/161:10 pm
BLL
-
ORD
1 stop12h 35m
British Airways
Mon 3/236:10 pm
ORD
-
BLL
1 stop12h 10m
British Airways
Deal found 2/10$500
This Ticket deal was found by Cheapflights users on 2/12. 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.
Mon 3/26:00 am
BLL
-
ORD
1 stop15h 20m
Air France
Mon 3/96:20 pm
ORD
-
BLL
1 stop14h 15m
Air France
Deal found 2/12$505
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:00 pm
BLL
-
ORD
1 stop21h 20m
British Airways
Mon 5/45:00 pm
ORD
-
BLL
1 stop14h 30m
British Airways
Deal found 2/10$521
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:00 am
BLL
-
ORD
1 stop15h 20m
Delta
Mon 3/96:20 pm
ORD
-
BLL
1 stop14h 15m
Delta
Deal found 2/10$540
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1610:25 am
BLL
-
ORD
2 stops17h 24m
Delta
Mon 3/235:50 pm
ORD
-
BLL
2 stops14h 00m
Delta
Deal found 2/10$551

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 February 14, 2026.

Round-trip from

$500
(Travelis)

One-way from

$353
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$739
From Billund to Chicago O'Hare Intl
Search Deals
One-way flight from Billund to Chicago O'Hare Intl
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Highest demand for flights based on searches. 13% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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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 February 14, 2026.
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

Mon 3/2

6:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Mon 3/9

6:20 pm-2:35 pm

1 stop14h 15m

$505

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 5/1

10:00 pm-12:20 pm

1 stop21h 20m

Chicago O'Hare Intl

Mon 5/4

5:00 pm-2:30 pm

1 stop14h 30m

$521

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 3/16

1:10 pm-8:20 am

2 stops25h 10m

Chicago O'Hare Intl

Mon 3/23

6:10 pm-12:20 pm

1 stop12h 10m

$522

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 3/2

6:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Mon 3/9

6:20 pm-2:35 pm

1 stop14h 15m

$540

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 3/16

10:25 am-9:49 pm

2 stops17h 24m

Chicago O'Hare Intl

Mon 3/23

5:50 pm-1:50 pm

2 stops14h 00m

$551

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 5/25

9:30 pm-3:55 pm

1 stop25h 25m

$353

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 5/25

7:35 pm-5:50 pm

2 stops29h 15m

$420

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 4/9

6:40 am-1:35 pm

2 stops37h 55m

$1,048

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 4/10

6:00 am-7:55 pm

1 stop20h 55m

$1,578

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 4/9

6:00 am-12:55 pm

1 stop13h 55m

$1,578

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

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 February 13, 2026.

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 64 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 $458). Flying from Billund to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $645). 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.

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 February 14, 2026.
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
7,784 reviews

Overall

6.8

Comfort

6.8

Food

6.3

Boarding

7.0

Entertainment

6.5

Crew

7.6

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
7,784 reviews
Lufthansa
6.8
Okay
7,784 reviews

Overall

6.8

Comfort

6.8

Food

6.3

Boarding

7.0

Entertainment

6.5

Crew

7.6

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 15h 20m. Air France provides one of the quickest options available for as low as $505. There are 4136 mi between Billund and Chicago O'Hare Intl Airport. This flight may include one or multiple stops.

  • 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 $458). Flying from Billund to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $645). 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
Naperville
Gurnee
Elgin
Hoffman Estates
Beloit
Delavan
Oak Brook
Des Plaines
Downers Grove
Elk Grove Village
Skokie
Libertyville
Lake Geneva
Waukegan
Bridgeview
Kenosha
Warrenville
Aurora

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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 February 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$768FlexibilityNo cancel feeOn-time76%

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