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 July 2025, there are 2 operators 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.

$493 Cheap Flights from Billund to Illinois in 2025

1 adult

0 bags

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Find the cheapest flights from Billund to Illinois

Round-trip

Cheap round-trip flights

2:15 pm - 2:10 pmBLL-ORD

30h 55m1 stop

4:15 pm - 10:30 amORD-BLL

11h 15m1 stop

$493Air France

Find Deal

Wed, Sep 17 - Sat, Sep 27

11:55 am - 2:10 pmBLL-ORD

33h 15m1 stop

4:15 pm - 1:30 pmORD-BLL

14h 15m1 stop

$494

Find Deal

Wed, Sep 17 - Sat, Sep 27

11:55 am - 2:10 pmBLL-ORD

33h 15m1 stop

5:15 pm - 1:30 pmORD-BLL

13h 15m2 stops

$498KLM

Find Deal

Wed, Sep 17 - Sat, Sep 27

11:55 am - 2:10 pmBLL-ORD

33h 15m1 stop

5:15 pm - 1:30 pmORD-BLL

13h 15m2 stops

$499KLM

Find Deal

Wed, Sep 17 - Sat, Sep 27

6:00 am - 12:30 pmBLL-ORD

13h 30m1 stop

4:00 pm - 10:15 amORD-BLL

11h 15m1 stop

$502Lufthansa

Find Deal

Wed, Sep 17 - Sat, Sep 27

5:05 pm - 11:50 amBLL-ORD

25h 45m1 stop

10:35 pm - 4:20 pmORD-BLL

10h 45m1 stop

$510American Airlines

Find Deal

Mon, Sep 8 - Tue, Sep 23

2:05 pm - 9:13 amBLL-ORD

26h 08m2 stops

3:20 pm - 1:20 pmORD-BLL

15h 00m1 stop

$511United Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

6:35 am - 5:28 pmBLL-ORD

17h 53m2 stops

9:04 am - 9:40 amORD-BLL

17h 36m2 stops

$512United Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

5:05 pm - 9:15 amBLL-ORD

23h 10m2 stops

5:40 pm - 4:20 pmORD-BLL

15h 40m1 stop

$515American Airlines

Find Deal

Mon, Sep 8 - Mon, Sep 22

10:35 am - 8:05 pmBLL-ORD

16h 30m1 stop

3:20 pm - 1:20 pmORD-BLL

15h 00m1 stop

$517Lufthansa

Find Deal

Thu, Dec 4 - Mon, Dec 8

United Airlines flights from Billund to Illinois

Our best United Airlines deals on Billund to Illinois flight tickets

United Airlines

Dec 4

BLL2:05 pmBillund

26h 08m

2 stops

ORD9:13 amChicago O'Hare Intl

Dec 8

ORD3:20 pmChicago O'Hare Intl

15h 00m

1 stop

BLL1:20 pmBillund

$511

Find similar

United Airlines

Dec 4

BLL6:35 amBillund

17h 53m

2 stops

ORD5:28 pmChicago O'Hare Intl

Dec 8

ORD9:04 amChicago O'Hare Intl

17h 36m

2 stops

BLL9:40 amBillund

$512

Find similar

United Airlines

Dec 4

BLL10:35 amBillund

35h 54m

2 stops

STL3:29 pmLambert-St Louis

Dec 8

STL1:00 pmLambert-St Louis

13h 40m

2 stops

BLL9:40 amBillund

$523

Find similar

KLM flights from Billund to Illinois

Our best KLM deals on Billund to Illinois flight tickets

KLM

Sep 17

BLL11:55 amBillund

33h 15m

1 stop

ORD2:10 pmChicago O'Hare Intl

Sep 27

ORD5:15 pmChicago O'Hare Intl

13h 15m

2 stops

BLL1:30 pmBillund

$498

Find similar

KLM

Sep 17

BLL11:55 amBillund

33h 15m

1 stop

ORD2:10 pmChicago O'Hare Intl

Sep 27

ORD5:15 pmChicago O'Hare Intl

13h 15m

2 stops

BLL1:30 pmBillund

$499

Find similar

KLM

Sep 10

BLL6:35 pmBillund

26h 35m

1 stop

ORD2:10 pmChicago O'Hare Intl

Sep 23

ORD4:20 pmChicago O'Hare Intl

11h 50m

1 stop

BLL11:10 amBillund

$541

Find similar

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

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 $456, 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 November is also cheap. Prices for this month can be found on momondo for an average of $471.

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 $638 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 $510 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

Best Price Found	$493
Fastest flight time	11h 25m
Direct flights	None
Airports in Illinois	3 airports

The best flight deal from Billund to Illinois found on momondo in the last 72 hours is $493

The fastest flight from Billund to Illinois takes 11h 25m

There are no direct flights from Billund to Illinois. Popular non-direct routes for this connection are Billund Airport - Chicago O'Hare Intl Airport, Billund Airport - Lambert-St Louis Airport and Billund Airport - Chicago Midway Airport.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

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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 July 2025, there are 2 operators 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
United Airlines	PriceFrom $427	Free Cancellation	Rating 7.4 8,846 reviews		Search United Airlines flights
Lufthansa	PriceFrom $559	Free Cancellation	Rating 6.8 7,199 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.