What is the cheapest airline that flies from Billund to Illinois?

Delta is the most popular carrier operating from Billund to Illinois

When did momondo last update prices for flights from Billund Airport to Illinois?

Prices for flights from Billund Airport to Illinois were last updated today.

How many operators does momondo search for flights from Billund Airport to Illinois?

As of November 2025, there is 1 operator available to choose from for flights from Billund Airport to Illinois.

How old do you have to be to fly from Billund Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Billund Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$517 Cheap Flights from Billund to Illinois in 2025/26

1 adult

0 bags

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Find the cheapest flights from Billund to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 8:05 pmBLL-ORD

20h 35m1 stop

6:25 pm - 1:30 pmORD-BLL

12h 05m1 stop

$524United Airlines

Find Deal

Fri, Nov 21 - Sun, Nov 30

6:30 am - 8:05 pmBLL-ORD

20h 35m1 stop

4:20 pm - 1:30 pmORD-BLL

14h 10m1 stop

$526United Airlines

Find Deal

Fri, Nov 21 - Sun, Nov 30

6:45 am - 7:16 pmBLL-STL

19h 31m2 stops

6:42 pm - 1:30 pmSTL-BLL

35h 48m2 stops

$529United Airlines

Find Deal

Sat, Nov 22 - Sat, Dec 6

10:25 am - 9:27 pmBLL-ORD

18h 02m2 stops

5:20 pm - 2:35 pmORD-BLL

14h 15m1 stop

$530Delta

Find Deal

Fri, Nov 21 - Sun, Nov 30

10:25 am - 7:30 pmBLL-ORD

16h 05m2 stops

3:55 pm - 9:40 amORD-BLL

34h 45m2 stops

$537Air Canada

Find Deal

Fri, Nov 21 - Sun, Nov 30

2:15 pm - 1:55 pmBLL-STL

30h 40m1 stop

4:05 pm - 10:00 amSTL-BLL

34h 55m2 stops

$574Multiple Airlines

Find Deal

Sat, Nov 22 - Sat, Dec 6

6:50 pm - 11:10 amBLL-ORD

23h 20m1 stop

3:20 pm - 9:40 amORD-BLL

11h 20m1 stop

$587Lufthansa

Find Deal

Mon, Dec 1 - Mon, Dec 8

6:00 am - 4:39 pmBLL-MDW

17h 39m2 stops

11:48 am - 11:20 amMDW-BLL

16h 32m2 stops

$690Delta

Find Deal

Wed, Nov 26 - Sun, Jan 4

10:20 am - 12:05 pmBLL-ORD

32h 45m2 stops

8:15 pm - 1:20 pmORD-BLL

34h 05m2 stops

$893Air Canada

Find Deal

Wed, Nov 26 - Sun, Jan 4

9:40 am - 2:00 pmBLL-ORD

35h 20m3 stops

7:40 pm - 9:25 amORD-BLL

30h 45m3 stops

$915Multiple Airlines

Find Deal

Mon, Dec 1 - Mon, Dec 8

United Airlines flights from Billund to Illinois

Our best United Airlines deals on Billund to Illinois flight tickets

United Airlines

Nov 21

BLL6:30 amBillund

20h 35m

1 stop

ORD8:05 pmChicago O'Hare Intl

Nov 30

ORD6:25 pmChicago O'Hare Intl

12h 05m

1 stop

BLL1:30 pmBillund

$524

Find similar

United Airlines

Nov 21

BLL6:30 amBillund

20h 35m

1 stop

ORD8:05 pmChicago O'Hare Intl

Nov 30

ORD4:20 pmChicago O'Hare Intl

14h 10m

1 stop

BLL1:30 pmBillund

$526

Find similar

United Airlines

Nov 22

BLL6:45 amBillund

19h 31m

2 stops

STL7:16 pmLambert-St Louis

Dec 6

STL6:42 pmLambert-St Louis

35h 48m

2 stops

BLL1:30 pmBillund

$529

Find similar

Air Canada flights from Billund to Illinois

Our best Air Canada deals on Billund to Illinois flight tickets

Air Canada

Nov 21

BLL10:25 amBillund

16h 05m

2 stops

ORD7:30 pmChicago O'Hare Intl

Nov 30

ORD3:55 pmChicago O'Hare Intl

34h 45m

2 stops

BLL9:40 amBillund

$537

Find similar

Air Canada

Nov 26

BLL10:20 amBillund

32h 45m

2 stops

ORD12:05 pmChicago O'Hare Intl

Jan 4

ORD8:15 pmChicago O'Hare Intl

34h 05m

2 stops

BLL1:20 pmBillund

$893

Find similar

Air Canada

Nov 22

BLL6:45 amBillund

19h 54m

3 stops

STL7:39 pmLambert-St Louis

Dec 6

STL6:30 amLambert-St Louis

20h 10m

3 stops

BLL9:40 amBillund

$1,254

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 11/21

6:30 am-8:05 pm

1 stop20h 35m

Chicago O'Hare Intl

Sun 11/30

6:25 pm-1:30 pm

1 stop12h 05m

$524

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 11/21

6:30 am-8:05 pm

1 stop20h 35m

Chicago O'Hare Intl

Sun 11/30

4:20 pm-1:30 pm

1 stop14h 10m

$526

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Sat 11/22

6:45 am-7:16 pm

2 stops19h 31m

Lambert-St Louis

Sat 12/6

6:42 pm-1:30 pm

2 stops35h 48m

$529

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 11/21

10:25 am-9:27 pm

2 stops18h 02m

Chicago O'Hare Intl

Sun 11/30

5:20 pm-2:35 pm

1 stop14h 15m

$530

BillundChicago

BLL - ORD

BLLORD

Billund

Fri 11/21

10:25 am-7:30 pm

2 stops16h 05m

Chicago O'Hare Intl

Sun 11/30

3:55 pm-9:40 am

2 stops34h 45m

$537

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Sat 11/22

2:15 pm-1:55 pm

1 stop30h 40m

Lambert-St Louis

Sat 12/6

4:05 pm-10:00 am

2 stops34h 55m

$574

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 12/1

6:50 pm-11:10 am

1 stop23h 20m

Chicago O'Hare Intl

Mon 12/8

3:20 pm-9:40 am

1 stop11h 20m

$587

BillundChicago

BLL - MDW

BLLMDW

Billund

Wed 11/26

6:00 am-4:39 pm

2 stops17h 39m

Chicago Midway

Sun 1/4

11:48 am-11:20 am

2 stops16h 32m

$690

BillundChicago

BLL - ORD

BLLORD

Billund

Wed 11/26

10:20 am-12:05 pm

2 stops32h 45m

Chicago O'Hare Intl

Sun 1/4

8:15 pm-1:20 pm

2 stops34h 05m

$893

BillundChicago

BLL - ORD

BLLORD

Billund

Mon 12/1

9:40 am-2:00 pm

3 stops35h 20m

Chicago O'Hare Intl

Mon 12/8

7:40 pm-9:25 am

3 stops30h 45m

$915

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Billund to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Billund is in February. Flight prices, which tend to average around $490, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $515.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Billund to Illinois is on a Tuesday when prices can be found for as low as $408. Flights from Billund to Illinois on a Saturday will generally be more expensive and average around $850. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Billund to Illinois during this time can be as low as $564. Flights at noon are often more expensive with an average ticket price of $595.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Billund when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $662 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Billund for as low as $533 on momondo.

Cheap Billund to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Billund to Illinois

Direct flights	None

There are no direct flights from Billund to Illinois. There are no popular flight routes from Billund to Illinois.

Search flight deals

When did momondo last update prices for flights from Billund Airport to Illinois?
Prices for flights from Billund Airport to Illinois were last updated today.
How many operators does momondo search for flights from Billund Airport to Illinois?
As of November 2025, there is 1 operator available to choose from for flights from Billund Airport to Illinois.
How old do you have to be to fly from Billund Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Billund Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Billund to Illinois

Compare and see reviews for airlines that fly from Billund to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $530	Free Cancellation	Rating 6.8 7,550 reviews		Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Billund to Illinois?

Finding the right flight to Illinois from Billund is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

Can I find flights from Billund to Illinois with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Illinois from Billund with this policy.

How can momondo help me find flights from Billund to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Billund.

I’m not ready to book a flight from Billund to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Billund. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.