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

American Airlines, British Airways, and Delta are the most popular carriers operating from Belgium to Illinois

How many flights depart from Belgium to Illinois on average per week?

As of January 2026, there are 42 flights per week flying from Belgium to Illinois. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

How many flights depart from Belgium to Illinois on average per day?

6 flights are operational daily from Belgium to Illinois as of January 2026. The most popular departure time for this route is 10:00AM, with 100% of flights per day taking off at noon.

What airlines fly to Illinois?

United Airlines, Lufthansa and Brussels Airlines are the top three most popular airlines that fly to Illinois from Belgium according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Belgium to Illinois refresh daily.

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

There are 3 operators available for flights from Belgium to Illinois as of January 2026.

How old do you have to be to fly from Belgium to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belgium to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$319 Cheap Flights from Belgium to Illinois in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Belgium to Illinois

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Belgium to Illinois

Enter your travel dates to find the best prices.

3:10 pm - 4:45 pm

BRU

ORD

32h 35m

1 stop

8:20 pm - 7:50 pm

ORD

BRU

17h 30m

1 stop

$539Scandinavian Airlines

Wed, Mar 4 - Wed, Mar 11

3:10 pm - 4:45 pm

BRU

ORD

32h 35m

1 stop

8:20 pm - 9:40 am

ORD

BRU

31h 20m

1 stop

$553Scandinavian Airlines

Fri, Mar 6 - Sun, Mar 22

3:10 pm - 4:45 pm

BRU

ORD

32h 35m

1 stop

8:20 pm - 10:50 am

ORD

BRU

32h 30m

2 stops

$554Scandinavian Airlines

Fri, Mar 6 - Sun, Mar 22

1:50 pm - 6:15 pm

BRU

ORD

11h 25m

1 stop

10:25 pm - 12:55 pm

ORD

BRU

31h 30m

1 stop

$560Icelandair

Mon, May 18 - Sun, May 31

1:50 pm - 9:25 pm

BRU

ORD

14h 35m

1 stop

7:25 pm - 12:55 pm

ORD

BRU

10h 30m

1 stop

$591Icelandair

Wed, May 20 - Fri, Jun 5

7:00 am - 4:47 pm

BRU

MLI

16h 47m

2 stops

12:23 pm - 8:55 am

MLI

BRU

13h 32m

1 stop

$719Lufthansa

Wed, Feb 18 - Sun, Mar 1

10:30 am - 9:27 pm

BRU

MLI

17h 57m

2 stops

12:23 pm - 8:55 am

MLI

BRU

13h 32m

1 stop

$722Lufthansa

Tue, Feb 17 - Sun, Mar 1

9:00 am - 7:02 pm

BRU

MLI

17h 02m

2 stops

3:25 pm - 8:55 am

MLI

BRU

35h 30m

2 stops

$743United Airlines

Wed, Mar 4 - Wed, Mar 11

10:10 am - 4:47 pm

BRU

MLI

13h 37m

1 stop

3:25 pm - 7:55 am

MLI

BRU

10h 30m

1 stop

$797United Airlines

Wed, Mar 4 - Wed, Mar 11

10:15 am - 11:48 pm

BRU

STL

20h 33m

2 stops

9:37 am - 9:35 am

STL

BRU

40h 58m

2 stops

$990Aer Lingus

Wed, Feb 25 - Fri, Feb 27

Lufthansa flights from Belgium to Illinois

Our best Lufthansa deals on Belgium to Illinois flight tickets

Lufthansa

Jan 23

BRU10:10 amBrussels Bruxelles-National

9h 00m

ORD12:10 pmChicago O'Hare Intl

Feb 5

ORD5:55 pmChicago O'Hare Intl

8h 00m

BRU8:55 amBrussels Bruxelles-National

$593

Lufthansa

Jan 23

BRU10:10 amBrussels Bruxelles-National

9h 00m

ORD12:10 pmChicago O'Hare Intl

Feb 5

ORD5:55 pmChicago O'Hare Intl

8h 00m

BRU8:55 amBrussels Bruxelles-National

$602

Lufthansa

Mar 3

BRU10:30 amBrussels Bruxelles-National

11h 50m

1 stop

ORD3:20 pmChicago O'Hare Intl

Mar 10

ORD5:55 pmChicago O'Hare Intl

8h 00m

BRU7:55 amBrussels Bruxelles-National

$616

Delta flights from Belgium to Illinois

Our best Delta deals on Belgium to Illinois flight tickets

Delta

Mar 9

BRU10:00 amBrussels Bruxelles-National

19h 58m

1 stop

STL11:58 pmLambert-St Louis

Mar 18

STL12:04 pmLambert-St Louis

13h 56m

1 stop

BRU8:00 amBrussels Bruxelles-National

$609

Delta

Mar 9

BRU6:15 amBrussels Bruxelles-National

23h 43m

2 stops

STL11:58 pmLambert-St Louis

Mar 18

STL10:12 amLambert-St Louis

15h 48m

1 stop

BRU8:00 amBrussels Bruxelles-National

$611

Delta

Mar 6

BRU10:45 amBrussels Bruxelles-National

10h 35m

1 stop

ORD2:20 pmChicago O'Hare Intl

Apr 26

ORD8:55 amChicago O'Hare Intl

15h 40m

2 stops

BRU7:35 amBrussels Bruxelles-National

$627

Fly from

Fly to

Route

Depart

Return

Price

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Wed 3/4

3:10 pm-4:45 pm

1 stop32h 35m

Chicago O'Hare Intl

Wed 3/11

8:20 pm-7:50 pm

1 stop17h 30m

$539

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Fri 3/6

3:10 pm-4:45 pm

1 stop32h 35m

Chicago O'Hare Intl

Sun 3/22

8:20 pm-9:40 am

1 stop31h 20m

$553

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Fri 3/6

3:10 pm-4:45 pm

1 stop32h 35m

Chicago O'Hare Intl

Sun 3/22

8:20 pm-10:50 am

2 stops32h 30m

$554

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Mon 5/18

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Sun 5/31

10:25 pm-12:55 pm

1 stop31h 30m

$560

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Wed 5/20

1:50 pm-9:25 pm

1 stop14h 35m

Chicago O'Hare Intl

Fri 6/5

7:25 pm-12:55 pm

1 stop10h 30m

$591

BrusselsMoline

BRU - MLI

BRUMLI

Brussels Bruxelles-National

Wed 2/18

7:00 am-4:47 pm

2 stops16h 47m

Moline Quad-City

Sun 3/1

12:23 pm-8:55 am

1 stop13h 32m

$719

BrusselsMoline

BRU - MLI

BRUMLI

Brussels Bruxelles-National

Tue 2/17

10:30 am-9:27 pm

2 stops17h 57m

Moline Quad-City

Sun 3/1

12:23 pm-8:55 am

1 stop13h 32m

$722

BrusselsMoline

BRU - MLI

BRUMLI

Brussels Bruxelles-National

Wed 3/4

9:00 am-7:02 pm

2 stops17h 02m

Moline Quad-City

Wed 3/11

3:25 pm-8:55 am

2 stops35h 30m

$743

BrusselsMoline

BRU - MLI

BRUMLI

Brussels Bruxelles-National

Wed 3/4

10:10 am-4:47 pm

1 stop13h 37m

Moline Quad-City

Wed 3/11

3:25 pm-7:55 am

1 stop10h 30m

$797

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Wed 2/25

10:15 am-11:48 pm

2 stops20h 33m

Lambert-St Louis

Fri 2/27

9:37 am-9:35 am

2 stops40h 58m

$990

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 Belgium 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

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Belgium is in February. Flight prices, which tend to average around $530, 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 September is also cheap. Prices for this month can be found on momondo for an average of $539.

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

The cheapest day to depart from Belgium to Illinois is on a Thursday when prices can be found for as low as $719. Flights from Belgium to Illinois on a Saturday will generally be more expensive and average around $841. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Belgium to Illinois flight route?

Fly from Brussels Bruxelles-National to Chicago O'Hare Intl for the best Belgium - Illinois flight prices

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

You are more likely to see cheaper flights to Illinois from Belgium when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $677 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Belgium for as low as $602 on momondo.

What cabin class options are available on Belgium to Illinois flights?

There are 3 cabin classes available to choose from on Belgium to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Belgium to Illinois flights?

You could potentially save up to 14% on your flight if you consider stops on a Belgium to Illinois flight.

Cheap Belgium to Illinois flight deals and tips

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

Best Price Found	$895
Fastest flight time	8h 45m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Belgium in the past 72 hours is $895. The best round-trip flight deal from Belgium to Illinois found on momondo in the last 72 hours is $826.

The fastest flight from Belgium to Illinois takes 8h 45m

Direct flights go from Belgium to Illinois every day.

There are 98 airports in Illinois. From Belgium there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

When did momondo last update prices for flights from Belgium to Illinois?
Prices for flights from Belgium to Illinois refresh daily.
How many operators does momondo search for flights from Belgium to Illinois?
There are 3 operators available for flights from Belgium to Illinois as of January 2026.
How old do you have to be to fly from Belgium to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belgium to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Belgium to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Belgium to Illinois is Boeing 787 Dreamliner, representing 43.99% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 22.12%, Boeing 777-300ER at 4.81%, and Airbus A330-300 at 4.57%.

Best airlines flying from Belgium to Illinois

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

Airline	Rating	Free Cancellation	Price
Brussels Airlines	PriceFrom $521	Free Cancellation	Rating 7.2 382 reviews	Search Brussels Airlines flights
Lufthansa	PriceFrom $521	Free Cancellation	Rating 6.8 7,731 reviews	Search Lufthansa flights
United Airlines	PriceFrom $568	Free Cancellation	Rating 7.4 9,176 reviews	Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Belgium.

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

Yes. momondo allows you to filter the results for Belgium to Illinois flights to just show those with flexible booking policies.

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

Once all potential Belgium to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Illinois from Belgium. 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.