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$431+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — ORD
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
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 April 1, 2025.

Round-trip from

$431
(Finnair)

Popular in

July

Cheapest in

November

Average price

$534
From Billund to Illinois
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($155 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 April 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 April 1, 2025.

This Finnair deal was found by Cheapflights users on 3/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/37:25 amBLL - ORD
1 stop17h 00mFinnair
Thu 5/810:25 pmORD - BLL
2 stops25h 20mFinnair
Deal found 3/31$431
This British Airways deal was found by Cheapflights users on 3/31. 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.
Wed 9/175:05 pmBLL - ORD
2 stops23h 08mBritish Airways
Sun 9/281:19 pmORD - BLL
2 stops20h 01mBritish Airways
Deal found 3/31$489
This Ticket deal was found by Cheapflights users on 3/31. 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 5/226:00 amBLL - ORD
1 stop15h 10mKLM
Mon 5/264:20 pmORD - BLL
1 stop23h 40mKLM
Deal found 3/31$547
This Flysmarter deal was found by Cheapflights users on 3/31. 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.
Tue 9/162:55 pmBLL - ORD
1 stop12h 00mLufthansa
Sat 9/274:00 pmORD - BLL
1 stop11h 15mLufthansa
Deal found 3/31$552
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:00 amBLL - MDW
2 stops16h 30mDelta
Mon 5/1212:48 pmMDW - BLL
2 stops15h 17mDelta
Deal found 3/30$555
This Delta deal was found by Cheapflights users on 3/31. 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 9/1610:15 amBLL - ORD
2 stops18h 47mDelta
Sat 9/274:20 pmORD - BLL
1 stop10h 10mDelta
Deal found 3/31$602
This Flysmarter deal was found by Cheapflights users on 3/30. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1710:15 amBLL - MDW
2 stops15h 21mMultiple Airlines
Sun 9/285:59 pmMDW - BLL
2 stops16h 41mMultiple Airlines
Deal found 3/30$609
This Flysmarter deal was found by Cheapflights users on 3/31. 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.
Wed 9/1710:15 amBLL - MDW
2 stops15h 21mAir France
Sat 9/2710:35 amMDW - BLL
2 stops16h 55mAir France
Deal found 3/31$650
This Flysmarter deal was found by Cheapflights users on 3/31. 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 9/186:45 amBLL - ORD
2 stops16h 53mAir France
Sun 9/285:45 pmORD - BLL
2 stops16h 55mAir France
Deal found 3/31$698
This Mytrip deal was found by Cheapflights users on 3/31. 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 5/226:00 amBLL - ORD
3 stops22h 15mMultiple Airlines
Mon 5/267:25 pmORD - BLL
3 stops20h 35mMultiple Airlines
Deal found 3/31$834
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/31. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1710:35 amBLL - ORD
2 stops31h 20mTAP AIR PORTUGAL
Sun 9/288:40 amORD - BLL
3 stops27h 25mTAP AIR PORTUGAL
Deal found 3/31$1,338
This Scandinavian Airlines deal was found by Cheapflights users on 3/31. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:25 amBLL - ORD
3 stops21h 26mScandinavian Airlines
Sat 9/277:00 amORD - BLL
2 stops19h 25mScandinavian Airlines
Deal found 3/31$1,530

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 April 1, 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 5/3

7:25 am-5:25 pm

1 stop17h 00m

Chicago O'Hare Intl

Thu 5/8

10:25 pm-6:45 am

2 stops25h 20m

$431

BillundChicago

BLL - ORD

BLLORD

Billund

Wed 9/17

5:05 pm-9:13 am

2 stops23h 08m

Chicago O'Hare Intl

Sun 9/28

1:19 pm-4:20 pm

2 stops20h 01m

$489

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 5/22

6:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Mon 5/26

4:20 pm-11:00 pm

1 stop23h 40m

$547

BillundChicago

BLL - ORD

BLLORD

Billund

Tue 9/16

2:55 pm-7:55 pm

1 stop12h 00m

Chicago O'Hare Intl

Sat 9/27

4:00 pm-10:15 am

1 stop11h 15m

$552

BillundChicago

BLL - MDW

BLLMDW

Billund

Thu 5/8

6:00 am-3:30 pm

2 stops16h 30m

Chicago Midway

Mon 5/12

12:48 pm-11:05 am

2 stops15h 17m

$555

BillundChicago

BLL - ORD

BLLORD

Billund

Tue 9/16

10:15 am-10:02 pm

2 stops18h 47m

Chicago O'Hare Intl

Sat 9/27

4:20 pm-9:30 am

1 stop10h 10m

$602

BillundChicago

BLL - MDW

BLLMDW

Billund

Wed 9/17

10:15 am-6:36 pm

2 stops15h 21m

Chicago Midway

Sun 9/28

5:59 pm-5:40 pm

2 stops16h 41m

$609

BillundChicago

BLL - MDW

BLLMDW

Billund

Wed 9/17

10:15 am-6:36 pm

2 stops15h 21m

Chicago Midway

Sat 9/27

10:35 am-10:30 am

2 stops16h 55m

$650

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 9/18

6:45 am-4:38 pm

2 stops16h 53m

Chicago O'Hare Intl

Sun 9/28

5:45 pm-5:40 pm

2 stops16h 55m

$698

BillundChicago

BLL - ORD

BLLORD

Billund

Thu 5/22

6:00 am-9:15 pm

3 stops22h 15m

Chicago O'Hare Intl

Mon 5/26

7:25 pm-11:00 pm

3 stops20h 35m

$834

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 12 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 $323). 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.

What is the cheapest time of day to fly from BLL to IL?

Find hourly flight availability from Billund to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Billund to Illinois as you normally would.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 1, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Billund to Illinois by reading reviews from past customers. 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.
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Scandinavian Airlines
7.3
Good
1,328 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Most travelers choose Billund - Chicago Midway, Billund - Chicago O'Hare Intl 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 $323). 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 2 airlines flying from Billund to Illinois

Discover the top 2 airlines 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$427Average$697FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$559Average$697FlexibilityNo cancel feeOn-time76%
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