HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$353+ Cheap flights from Billund (BLL) to Illinois

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
3月 16 — 3月 231
週一 3/16
週一 3/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billund to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 2月 14, 2026.

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.
週一 3/26:00 am
BLL
-
ORD
1 stop15h 20m
Air France
週一 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.
週五 5/110:00 pm
BLL
-
ORD
1 stop21h 20m
British Airways
週一 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 2/14. 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.
週一 3/210:25 am
BLL
-
ORD
1 stop10h 55m
Delta
週一 3/96:20 pm
ORD
-
BLL
1 stop14h 15m
Delta
Deal found 2/14$539
This Delta deal was found by Cheapflights users on 2/14. 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.
週一 3/26:00 am
BLL
-
MDW
2 stops18h 37m
Delta
週一 3/92:05 pm
MDW
-
BLL
2 stops13h 35m
Delta
Deal found 2/14$550
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週六 2/282:15 pm
BLL
-
ORD
2 stops16h 28m
United Airlines
週三 3/43:20 pm
ORD
-
BLL
1 stop11h 40m
United Airlines
Deal found 2/12$571
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週六 2/282:15 pm
BLL
-
STL
2 stops26h 58m
United Airlines
週三 3/49:55 am
STL
-
BLL
2 stops17h 05m
United Airlines
Deal found 2/12$571
This Flysmarter deal was found by Cheapflights users on 2/13. 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.
週二 3/242:15 pm
BLL
-
ORD
1 stop27h 55m
Lufthansa
週六 4/114:05 pm
ORD
-
BLL
1 stop10h 55m
Lufthansa
Deal found 2/13$577
This United Airlines deal was found by Cheapflights users on 2/14. 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.
週六 3/146:45 am
BLL
-
STL
2 stops18h 29m
United Airlines
週六 3/214:47 pm
STL
-
BLL
2 stops38h 43m
United Airlines
Deal found 2/14$658
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.
週五 5/110:15 am
BLL
-
MDW
2 stops15h 21m
Delta
週一 5/42:12 pm
MDW
-
BLL
2 stops16h 18m
Delta
Deal found 2/10$663
This FlightHub deal was found by Cheapflights users on 2/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週六 3/146:45 am
BLL
-
STL
2 stops22h 14m
Multiple Airlines
週六 3/214:05 pm
STL
-
BLL
2 stops35h 55m
Multiple Airlines
Deal found 2/14$689
This Delta deal was found by Cheapflights users on 2/14. 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.
週二 3/246:00 am
BLL
-
MDW
2 stops22h 31m
Delta
週六 4/119:35 am
MDW
-
BLL
2 stops17h 50m
Delta
Deal found 2/14$718
This Air Canada deal was found by Cheapflights users on 2/13. 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.
週日 3/12:05 pm
BLL
-
STL
2 stops32h 24m
Multiple Airlines
週四 3/57:41 am
STL
-
BLL
3 stops19h 04m
Multiple Airlines
Deal found 2/13$749

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 2月 14, 2026.

Round-trip from

$505
(Ticket)

One-way from

$353
(Trip.com)

Popular in

July

Cheapest in

January

Average price

$586
From Billund to Illinois
Search Deals
One-way flight 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 ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 2月 14, 2026.
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

週一 3/2

6:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

週一 3/9

6:20 pm-2:35 pm

1 stop14h 15m

$505

BillundChicago

BLL - ORD

BLLORD

Billund

週五 5/1

10:00 pm-12:20 pm

1 stop21h 20m

Chicago O'Hare Intl

週一 5/4

5:00 pm-2:30 pm

1 stop14h 30m

$521

BillundChicago

BLL - ORD

BLLORD

Billund

週一 3/2

6:00 am-5:43 pm

2 stops18h 43m

Chicago O'Hare Intl

週一 3/9

6:20 pm-2:35 pm

1 stop14h 15m

$545

BillundChicago

BLL - MDW

BLLMDW

Billund

週一 3/2

6:00 am-5:37 pm

2 stops18h 37m

Chicago Midway

週一 3/9

2:05 pm-9:40 am

2 stops13h 35m

$550

BillundChicago

BLL - ORD

BLLORD

Billund

週六 2/28

2:15 pm-11:43 pm

2 stops16h 28m

Chicago O'Hare Intl

週三 3/4

11:05 am-10:00 am

2 stops15h 55m

$571

BillundSt. Louis

BLL - STL

BLLSTL

Billund

週日 3/1

2:05 pm-10:59 pm

2 stops15h 54m

Lambert-St Louis

週四 3/5

8:30 am-9:45 am

2 stops18h 15m

$571

BillundSt. Louis

BLL - STL

BLLSTL

Billund

週六 2/28

2:15 pm-10:13 am

2 stops26h 58m

Lambert-St Louis

週三 3/4

9:55 am-10:00 am

2 stops17h 05m

$571

BillundSt. Louis

BLL - STL

BLLSTL

Billund

週六 3/14

6:45 am-7:14 pm

2 stops18h 29m

Lambert-St Louis

週六 3/21

4:47 pm-1:30 pm

2 stops38h 43m

$658

BillundChicago

BLL - MDW

BLLMDW

Billund

週五 5/1

10:15 am-6:36 pm

2 stops15h 21m

Chicago Midway

週一 5/4

2:12 pm-1:30 pm

2 stops16h 18m

$663

BillundSt. Louis

BLL - STL

BLLSTL

Billund

週六 3/14

6:45 am-10:59 pm

2 stops22h 14m

Lambert-St Louis

週六 3/21

4:05 pm-10:00 am

2 stops35h 55m

$689

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Showing 1-10 of 21 results
1
2
3

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 $458). Flying from Billund to Illinois 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 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 2月 14, 2026.
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
7,785 reviews

Overall

6.8

Boarding

7.0

Comfort

6.8

Entertainment

6.5

Food

6.3

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
7,785 reviews
Lufthansa
6.8
Okay
7,785 reviews

Overall

6.8

Boarding

7.0

Comfort

6.8

Entertainment

6.5

Food

6.3

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 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 $505, Air France can have you in Illinois from Billund in 15h 20m. 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 $458). Flying from Billund to Illinois 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Billund to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Copenhagen to Newark flights
Copenhagen to John F Kennedy Intl flights
Copenhagen to Miami flights
Copenhagen to Los Angeles flights
Copenhagen to LaGuardia flights
Copenhagen to Boston flights
Copenhagen to Las Vegas flights
Copenhagen to San Francisco flights
Copenhagen to Dulles Intl flights
Copenhagen to O'Hare Intl flights
Copenhagen to Fort Lauderdale flights
Copenhagen to Portland flights
Billund to Miami flights
Copenhagen to Baltimore flights
Copenhagen to West Palm Beach flights
Copenhagen to Reagan-National flights
Copenhagen to Sky Harbor Intl flights
Copenhagen to Denver flights
Copenhagen to Seattle flights
Copenhagen to Tampa flights
Copenhagen to Atlanta flights
Copenhagen to Austin flights
Copenhagen to Ontario flights
Copenhagen to Orlando flights
Copenhagen to Santa Ana flights
Billund to Dallas/Fort Worth flights
Copenhagen to Dallas/Fort Worth flights
Copenhagen to Minneapolis flights
Copenhagen to Hobby flights
Billund to Newark flights
Billund to John F Kennedy Intl flights
Copenhagen to San Jose flights
Aarhus to John F Kennedy Intl flights
Copenhagen to Charleston flights
Copenhagen to George Bush Intcntl flights
Copenhagen to Kansas City flights
Aarhus to Newark flights
Copenhagen to Oakland flights
Billund to O'Hare Intl flights
Copenhagen to San Diego flights
Aalborg to Newark flights
Billund to Seattle flights
Copenhagen to Nashville flights
Billund to Boston flights
Billund to Denver flights

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 2月 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$530Average$768FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.