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$479+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — ORD
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
1 adult, Economy
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Cheap flight deals from Billund to Illinois

Best flights from Billund to Illinois
Discover carefully curated flight deals from Billund to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 29, 2025.

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 12/28. 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.
Thu 1/2210:25 amBLL - ORD
2 stops15h 20mMultiple Airlines
Mon 1/265:20 pmORD - BLL
1 stop14h 15mMultiple Airlines
Deal found 12/28$509
This Travelis 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:00 amBLL - MDW
2 stops17h 16mKLM
Wed 1/2812:48 pmMDW - BLL
2 stops13h 52mKLM
Deal found 12/27$536
This United Airlines deal was found by Cheapflights users on 12/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:35 amBLL - STL
2 stops21h 38mUnited Airlines
Wed 2/189:55 amSTL - BLL
2 stops20h 30mUnited Airlines
Deal found 12/28$566
This Ticket deal was found by Cheapflights users on 12/28. 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 1/311:05 pmBLL - ORD
1 stop12h 40mBritish Airways
Fri 2/65:10 pmORD - BLL
1 stop12h 10mBritish Airways
Deal found 12/28$479
This Ticket deal was found by Cheapflights users on 12/28. 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.
Thu 1/2210:25 amBLL - MDW
2 stops14h 30mMultiple Airlines
Mon 1/261:26 pmMDW - BLL
2 stops13h 14mMultiple Airlines
Deal found 12/28$516
This British Airways deal was found by Cheapflights users on 12/28. 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.
Sat 2/281:05 pmBLL - ORD
1 stop12h 40mBritish Airways
Wed 3/49:45 pmORD - BLL
1 stop31h 20mBritish Airways
Deal found 12/28$506
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 Mytrip deal was found by Cheapflights users on 12/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/221:00 pmBLL - ORD
2 stops25h 12mBritish Airways
Mon 1/267:48 pmORD - BLL
2 stops33h 42mBritish Airways
Deal found 12/28$516
This Ticket deal was found by Cheapflights users on 12/28. 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 1/316:00 amBLL - MDW
2 stops17h 16mKLM
Fri 2/61:26 pmMDW - BLL
2 stops13h 14mKLM
Deal found 12/28$645
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 1/246:00 amBLL - MDW
2 stops17h 16mMultiple Airlines
Wed 1/2812:48 pmMDW - BLL
2 stops13h 52mMultiple Airlines
Deal found 12/27$578
This British Airways 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 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 12/26$545
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/221:00 pmBLL - STL
2 stops31h 03mBritish Airways
Mon 1/266:00 amSTL - BLL
2 stops23h 20mBritish Airways
Deal found 12/26$551
This Ticket deal was found by Cheapflights users on 12/28. 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 1/316:00 amBLL - MDW
2 stops17h 16mMultiple Airlines
Fri 2/61:26 pmMDW - BLL
2 stops13h 14mMultiple Airlines
Deal found 12/28$708
This Delta deal was found by Cheapflights users on 12/28. 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.
Wed 6/310:15 amBLL - MDW
2 stops14h 50mDelta
Thu 6/119:20 amMDW - BLL
2 stops17h 15mDelta
Deal found 12/28$4,420
This Condor deal was found by Cheapflights users on 12/28. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:00 amBLL - MDW
2 stops21h 35mMultiple Airlines
Fri 6/129:20 amMDW - BLL
2 stops22h 00mMultiple Airlines
Deal found 12/28$5,171

Find flight deals from Billund to Illinois

Keep the following information in mind while searching for Billund to Illinois flight deals. Data was last updated December 29, 2025.

Round-trip from

$479
(Ticket)

Popular in

July

Cheapest in

February

Average price

$536
From Billund to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 29, 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

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

Sat 1/31

1:05 pm-6:45 pm

1 stop12h 40m

Chicago O'Hare Intl

Fri 2/6

5:10 pm-12:20 pm

1 stop12h 10m

$479

BillundChicago

BLL - ORD

BLLORD

Billund

Sat 2/28

1:05 pm-6:45 pm

1 stop12h 40m

Chicago O'Hare Intl

Wed 3/4

9:45 pm-12:05 pm

1 stop31h 20m

$506

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 1/22

10:25 am-6:45 pm

2 stops15h 20m

Chicago O'Hare Intl

Mon 1/26

5:20 pm-2:35 pm

1 stop14h 15m

$509

BillundChicago

BLL - MDW

BLLMDW

Billund

Thu 1/22

10:25 am-5:55 pm

2 stops14h 30m

Chicago Midway

Mon 1/26

1:26 pm-9:40 am

2 stops13h 14m

$516

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 1/22

1:00 pm-7:12 am

2 stops25h 12m

Chicago O'Hare Intl

Mon 1/26

7:48 pm-12:30 pm

2 stops33h 42m

$516

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 - MDW

BLLMDW

Billund

Sat 1/24

6:00 am-4:16 pm

2 stops17h 16m

Chicago Midway

Wed 1/28

12:48 pm-9:40 am

2 stops13h 52m

$536

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

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 1/22

1:00 pm-1:03 pm

2 stops31h 03m

Lambert-St Louis

Mon 1/26

6:00 am-12:20 pm

2 stops23h 20m

$551

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 16 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, January is the cheapest month in which you can book a flight from Billund to Illinois (average of $408). Flying from Billund to Illinois 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 Illinois?

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 December 29, 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
7,659 reviews

Comfort

6.8

Crew

7.6

Overall

6.8

Food

6.3

Entertainment

6.4

Boarding

7.0

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
7,659 reviews
Lufthansa
6.8
Okay
7,659 reviews

Comfort

6.8

Crew

7.6

Overall

6.8

Food

6.3

Entertainment

6.4

Boarding

7.0

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 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 $479, British Airways can have you in Illinois from Billund in 12h 40m. Airlines will cover a distance of 4136 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, January is the cheapest month in which you can book a flight from Billund to Illinois (average of $408). Flying from Billund to Illinois 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

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Alternative routes for Billund to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$755FlexibilityNo cancel feeOn-time76%

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