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O'Hare Intl

$504+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — ORD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 November, booked 24 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap 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 September 17, 2025.

Round-trip from

$504
(Ticket)

Popular in

July

Cheapest in

January

Average price

$646
From Billund to Chicago O'Hare Intl
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Highest demand for flights based on searches. 18% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This Ticket deal was found by Cheapflights users on 9/15. 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 11/81:05 pmBLL - ORD
1 stop12h 40mBritish Airways
Wed 11/1211:48 amORD - BLL
2 stops17h 22mBritish Airways
Deal found 9/15$504
This Ticket deal was found by Cheapflights users on 9/15. 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 11/810:35 amBLL - ORD
2 stops15h 55mAir Canada
Wed 11/1211:15 amORD - BLL
2 stops15h 45mAir Canada
Deal found 9/15$543
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:45 amBLL - ORD
1 stop13h 25mUnited Airlines
Wed 11/121:00 pmORD - BLL
2 stops14h 00mUnited Airlines
Deal found 9/16$554
This Delta deal was found by Cheapflights users on 9/15. 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.
Wed 10/110:15 amBLL - ORD
2 stops18h 00mDelta
Tue 10/74:05 pmORD - BLL
2 stops18h 35mDelta
Deal found 9/15$570
This Delta deal was found by Cheapflights users on 9/15. 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.
Wed 10/110:15 amBLL - ORD
2 stops18h 00mDelta
Sun 10/54:15 pmORD - BLL
1 stop10h 20mDelta
Deal found 9/15$592
This Delta deal was found by Cheapflights users on 9/17. 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.
Wed 10/16:45 amBLL - ORD
2 stops19h 15mDelta
Wed 5/64:20 pmORD - BLL
1 stop10h 15mDelta
Deal found 9/17$602
This Flysmarter deal was found by Cheapflights users on 9/15. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/22:15 pmBLL - ORD
2 stops16h 39mMultiple Airlines
Mon 10/65:40 pmORD - BLL
2 stops12h 50mMultiple Airlines
Deal found 9/15$621
This Air France deal was found by Cheapflights users on 9/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:35 pmBLL - ORD
1 stop26h 35mAir France
Thu 5/74:20 pmORD - BLL
1 stop18h 20mAir France
Deal found 9/17$632
This Air France deal was found by Cheapflights users on 9/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:35 pmBLL - ORD
1 stop26h 35mAir France
Tue 5/55:10 pmORD - BLL
1 stop22h 15mAir France
Deal found 9/17$639
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 9/306:00 amBLL - ORD
2 stops17h 31mDelta
Tue 5/54:20 pmORD - BLL
1 stop14h 15mDelta
Deal found 9/17$642
This Air France deal was found by Cheapflights users on 9/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:35 pmBLL - ORD
1 stop26h 35mAir France
Wed 5/64:20 pmORD - BLL
1 stop14h 15mAir France
Deal found 9/17$643

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 September 17, 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

Sat 11/8

1:05 pm-6:45 pm

1 stop12h 40m

Chicago O'Hare Intl

Wed 11/12

9:45 pm-12:05 pm

1 stop31h 20m

$504

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 11/8

10:35 am-7:30 pm

2 stops15h 55m

Chicago O'Hare Intl

Wed 11/12

11:15 am-10:00 am

2 stops15h 45m

$543

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 11/8

6:45 am-1:10 pm

1 stop13h 25m

Chicago O'Hare Intl

Wed 11/12

1:00 pm-10:00 am

2 stops14h 00m

$554

BillundChicago

BLL - ORD

BLLORD

Billund

Wed 10/1

10:15 am-9:15 pm

2 stops18h 00m

Chicago O'Hare Intl

Tue 10/7

4:05 pm-5:40 pm

2 stops18h 35m

$570

BillundChicago

BLL - ORD

BLLORD

Billund

Wed 10/1

10:15 am-9:15 pm

2 stops18h 00m

Chicago O'Hare Intl

Mon 10/6

1:25 pm-1:30 pm

2 stops17h 05m

$570

BillundChicago

BLL - ORD

BLLORD

Billund

Wed 10/1

10:15 am-9:15 pm

2 stops18h 00m

Chicago O'Hare Intl

Sun 10/5

11:20 am-1:30 pm

2 stops19h 10m

$570

BillundChicago

BLL - ORD

BLLORD

Billund

Wed 10/1

6:45 am-7:00 pm

2 stops19h 15m

Chicago O'Hare Intl

Wed 5/6

4:20 pm-9:35 am

1 stop10h 15m

$602

BillundChicago

BLL - ORD

BLLORD

Billund

Tue 9/30

6:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Wed 5/6

4:20 pm-11:00 pm

1 stop23h 40m

$632

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 10/2

2:15 pm-11:54 pm

2 stops16h 39m

Chicago O'Hare Intl

Mon 10/6

10:25 am-11:10 am

2 stops17h 45m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 September 12, 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 24 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, August is the cheapest month in which you can book a flight from Billund to Chicago O'Hare Intl Airport (average of $245). Flying from Billund to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 September 17, 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
7,409 reviews

Overall

6.8

Boarding

7.0

Food

6.3

Comfort

6.8

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,409 reviews
Lufthansa
6.8
Okay
7,409 reviews

Overall

6.8

Boarding

7.0

Food

6.3

Comfort

6.8

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

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 40m. British Airways provides one of the quickest options available for as low as $504. 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 19% 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, August is the cheapest month in which you can book a flight from Billund to Chicago O'Hare Intl Airport (average of $245). Flying from Billund to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Orland Park
Beloit
Racine
Rockford
Oak Brook
Elk Grove Village
Downers Grove
Naperville
Evanston
Merrillville
Bridgeview
Warrenville

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$755FlexibilityNo cancel feeOn-time76%

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