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$477+ Cheap flights from Billund (BLL) to Illinois

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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — ORD
Oct 30 — Nov 61
Thu 10/30
Thu 11/6
1 adult, Economy
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Cheap flight deals from Billund to Illinois

Keep the following information in mind while searching for Billund to Illinois flight deals. Data was last updated September 30, 2025.

Round-trip from

$477
(Ticket)

Popular in

July

Cheapest in

February

Average price

$573
From Billund to Illinois
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Billund to Illinois

Cheapest flights from Billund to Illinois
Explore the most affordable flight options available from Billund to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 30, 2025.

This Ticket deal was found by Cheapflights users on 9/29. 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 11/241:10 pmBLL - ORD
1 stop31h 40mBritish Airways
Mon 12/17:14 pmORD - BLL
2 stops34h 16mBritish Airways
Deal found 9/29$477
This Ticket deal was found by Cheapflights users on 9/28. 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 9/28$487
This British Airways deal was found by Cheapflights users on 9/28. 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.
Thu 12/48:40 pmBLL - STL
2 stops30h 58mBritish Airways
Mon 12/87:36 pmSTL - BLL
2 stops33h 54mBritish Airways
Deal found 9/28$507
This Flysmarter deal was found by Cheapflights users on 9/29. 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.
Mon 11/246:45 amBLL - ORD
2 stops19h 00mMultiple Airlines
Mon 12/112:50 pmORD - BLL
2 stops17h 30mMultiple Airlines
Deal found 9/29$538
This Lufthansa deal was found by Cheapflights users on 9/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:00 pmBLL - STL
1 stop30h 55mLufthansa
Mon 12/81:00 pmSTL - BLL
2 stops13h 40mLufthansa
Deal found 9/28$547
This United Airlines deal was found by Cheapflights users on 9/30. 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.
Fri 11/286:30 amBLL - ORD
1 stop13h 40mUnited Airlines
Fri 12/53:20 pmORD - BLL
1 stop11h 40mUnited Airlines
Deal found 9/30$551
This Air Canada deal was found by Cheapflights users on 9/28. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:45 amBLL - ORD
2 stops20h 15mMultiple Airlines
Wed 11/1212:50 pmORD - BLL
2 stops17h 35mMultiple Airlines
Deal found 9/28$552
This Ticket deal was found by Cheapflights users on 9/28. 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 11/810:25 amBLL - MDW
2 stops15h 00mMultiple Airlines
Wed 11/121:15 pmMDW - BLL
2 stops13h 25mMultiple Airlines
Deal found 9/28$556
This United Airlines deal was found by Cheapflights users on 9/30. 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
2 stops20h 22mUnited Airlines
Wed 11/121:00 pmORD - BLL
2 stops14h 00mUnited Airlines
Deal found 9/30$559
This Lufthansa deal was found by Cheapflights users on 9/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amBLL - ORD
1 stop13h 55mLufthansa
Mon 10/2010:30 pmORD - BLL
1 stop28h 45mLufthansa
Deal found 9/28$579
This Delta deal was found by Cheapflights users on 9/28. 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.
Thu 10/166:00 amBLL - ORD
1 stop15h 10mDelta
Mon 10/201:25 pmORD - BLL
2 stops13h 10mDelta
Deal found 9/28$593
This Delta deal was found by Cheapflights users on 9/28. 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.
Thu 10/1610:15 amBLL - MDW
2 stops15h 10mDelta
Mon 10/201:08 pmMDW - BLL
2 stops13h 27mDelta
Deal found 9/28$598

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billund to Illinois 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 30, 2025.
Use the filters below to find and compare flights from Billund to Illinois that are best for you.

Fly from

Billund

Fly to

Illinois

Route

Depart

Return

Price

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 11/24

1:10 pm-1:50 pm

1 stop31h 40m

Chicago O'Hare Intl

Mon 12/1

7:14 pm-12:30 pm

2 stops34h 16m

$477

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 11/8

1:05 pm-6:45 pm

1 stop12h 40m

Chicago O'Hare Intl

Wed 11/12

11:48 am-12:10 pm

2 stops17h 22m

$487

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 12/4

8:40 pm-8:38 pm

2 stops30h 58m

Lambert-St Louis

Mon 12/8

7:36 pm-12:30 pm

2 stops33h 54m

$507

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 11/24

6:45 am-6:45 pm

2 stops19h 00m

Chicago O'Hare Intl

Mon 12/1

12:50 pm-1:20 pm

2 stops17h 30m

$538

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 12/4

2:00 pm-1:55 pm

1 stop30h 55m

Lambert-St Louis

Mon 12/8

1:00 pm-9:40 am

2 stops13h 40m

$547

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 11/28

6:30 am-2:55 pm

2 stops15h 25m

Chicago O'Hare Intl

Fri 12/5

3:20 pm-10:00 am

1 stop11h 40m

$551

BillundChicago

BLL - MDW

BLLMDW

Billund

Sat 11/8

10:25 am-6:25 pm

2 stops15h 00m

Chicago Midway

Wed 11/12

1:15 pm-9:40 am

2 stops13h 25m

$556

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 11/8

6:45 am-8:07 pm

2 stops20h 22m

Chicago O'Hare Intl

Wed 11/12

1:00 pm-10:00 am

2 stops14h 00m

$559

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 10/16

6:00 am-12:55 pm

1 stop13h 55m

Chicago O'Hare Intl

Mon 10/20

10:30 pm-10:15 am

1 stop28h 45m

$579

BillundChicago

BLL - MDW

BLLMDW

Billund

Thu 10/16

10:15 am-6:25 pm

2 stops15h 10m

Chicago Midway

Mon 10/20

1:08 pm-9:35 am

2 stops13h 27m

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/29

Showing 1-10 of 18 results
1
2

Best time to book a flight from Billund to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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 Illinois

What is the cheapest month to book a flight from Billund to Illinois?

Currently, August is the cheapest month in which you can book a flight from Billund to Illinois (average of $245). Flying from Billund to Illinois 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 Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated September 30, 2025.
See what other customers who have flown with Lufthansa from Billund to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,437 reviews

Crew

7.6

Boarding

7.0

Entertainment

6.4

Food

6.3

Overall

6.8

Comfort

6.8

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
7,437 reviews
Lufthansa
6.8
Okay
7,437 reviews

Crew

7.6

Boarding

7.0

Entertainment

6.4

Food

6.3

Overall

6.8

Comfort

6.8

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 Illinois. 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 Illinois?

    Billund (BLL), located 1.7 mi from the city center, is the airport you fly out of when you book flights from Billund to Illinois.

  • How long is the flight from Billund to Illinois?

    For as low as $598, British Airways can have you in Illinois from Billund in 15h 10m. Airlines will cover a distance of 4141 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Billund to Illinois?

    Most travelers choose Billund - Chicago O'Hare Intl, Billund - Chicago Midway or Billund - Lambert-St Louis when deciding on the best route from Billund to Illinois.

  • Can I find deals for flights from Billund to Illinois that include hotel bookings?

    Yes. In addition to deals on Billund to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billund to Illinois?

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

  • Can I find deals for business class flights from Billund to Illinois?

    Yes. Cheapflights offers flight deals from Billund to Illinois 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 Illinois?

    Currently, August is the cheapest month in which you can book a flight from Billund to Illinois (average of $245). Flying from Billund to Illinois 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

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Alternative routes for Billund to Illinois

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Top airline flying from Billund to Illinois

Discover the top airline that operate flights from Billund to Illinois. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$768FlexibilityNo cancel feeOn-time76%

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