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

British Airways and Finnair are the most popular carriers operating from Brussels to Illinois

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

42 flights are operational weekly from Brussels to Illinois as of February 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

The number of flights available between Brussels and Illinois is 6 per day as of February 2026. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.

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

Prices for flights from Brussels to Illinois were last updated today.

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

As of February 2026, there are 2 operators available to choose from for flights from Brussels to Illinois.

How old do you have to be to fly from Brussels 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 Brussels 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.

$293 Cheap Flights from Brussels to Illinois in 2026

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Find the cheapest flights from Brussels to Illinois

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:55 am - 4:00 pm

BRU

ORD

17h 05m

1 stop

6:05 pm - 8:05 pm

ORD

BRU

19h 00m

1 stop

$508TAP AIR PORTUGAL

Fri, Apr 17 - Sat, Apr 25

9:00 pm - 4:00 pm

BRU

ORD

26h 00m

1 stop

6:05 pm - 8:05 pm

ORD

BRU

19h 00m

1 stop

$533TAP AIR PORTUGAL

Thu, Apr 23 - Sat, May 2

6:55 pm - 1:10 pm

BRU

ORD

25h 15m

1 stop

3:00 pm - 12:25 pm

ORD

BRU

14h 25m

1 stop

$591ITA Airways

Thu, Jun 25 - Tue, Jul 7

11:35 am - 1:10 pm

BRU

ORD

32h 35m

1 stop

3:00 pm - 10:45 am

ORD

BRU

12h 45m

1 stop

$593ITA Airways

Tue, Jun 23 - Tue, Jul 7

8:30 am - 1:25 pm

BRU

STL

11h 55m

1 stop

1:10 pm - 10:10 am

STL

BRU

14h 00m

2 stops

$662Lufthansa

Sun, Apr 19 - Mon, Apr 27

12:00 pm - 7:22 pm

BRU

STL

14h 22m

1 stop

11:37 am - 7:45 am

STL

BRU

13h 08m

1 stop

$667Multiple Airlines

Fri, Apr 17 - Tue, Apr 21

12:00 pm - 7:22 pm

BRU

STL

14h 22m

1 stop

11:37 am - 7:45 am

STL

BRU

13h 08m

1 stop

$668Multiple Airlines

Fri, Apr 17 - Tue, Apr 21

8:30 am - 3:48 pm

BRU

STL

14h 18m

2 stops

3:30 pm - 10:10 am

STL

BRU

11h 40m

1 stop

$669Lufthansa

Fri, Apr 17 - Wed, Apr 22

8:30 am - 1:25 pm

BRU

STL

11h 55m

1 stop

12:15 pm - 7:15 am

STL

BRU

12h 00m

1 stop

$689United Airlines

Fri, Apr 17 - Tue, Apr 21

12:00 pm - 9:06 pm

BRU

MLI

16h 06m

2 stops

6:30 am - 7:15 am

MLI

BRU

17h 45m

2 stops

$763United Airlines

Fri, Apr 10 - Fri, Apr 17

TAP AIR PORTUGAL flights from Brussels to Illinois

Our best TAP AIR PORTUGAL deals on Brussels to Illinois flight tickets

TAP AIR PORTUGAL

Apr 17

BRU5:55 amBrussels Bruxelles-National

17h 05m

1 stop

ORD4:00 pmChicago O'Hare Intl

Apr 25

ORD6:05 pmChicago O'Hare Intl

19h 00m

1 stop

BRU8:05 pmBrussels Bruxelles-National

$508

TAP AIR PORTUGAL

Mar 3

BRU5:55 pmBrussels Bruxelles-National

28h 05m

1 stop

ORD3:00 pmChicago O'Hare Intl

Mar 11

ORD8:10 pmChicago O'Hare Intl

21h 40m

1 stop

BRU11:50 pmBrussels Bruxelles-National

$524

TAP AIR PORTUGAL

Mar 5

BRU11:50 amBrussels Bruxelles-National

34h 35m

1 stop

ORD3:25 pmChicago O'Hare Intl

Mar 11

ORD8:10 pmChicago O'Hare Intl

21h 40m

1 stop

BRU11:50 pmBrussels Bruxelles-National

$531

ITA Airways flights from Brussels to Illinois

Our best ITA Airways deals on Brussels to Illinois flight tickets

ITA Airways

Jun 25

BRU6:55 pmBrussels Bruxelles-National

25h 15m

1 stop

ORD1:10 pmChicago O'Hare Intl

Jul 7

ORD3:00 pmChicago O'Hare Intl

14h 25m

1 stop

BRU12:25 pmBrussels Bruxelles-National

$591

ITA Airways

Jun 23

BRU11:35 amBrussels Bruxelles-National

32h 35m

1 stop

ORD1:10 pmChicago O'Hare Intl

Jul 7

ORD3:00 pmChicago O'Hare Intl

12h 45m

1 stop

BRU10:45 amBrussels Bruxelles-National

$593

ITA Airways

Jun 23

BRU6:55 pmBrussels Bruxelles-National

25h 15m

1 stop

ORD1:10 pmChicago O'Hare Intl

Jul 7

ORD3:00 pmChicago O'Hare Intl

12h 45m

1 stop

BRU10:45 amBrussels Bruxelles-National

$597

Fly from

Fly to

Route

Depart

Return

Price

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Fri 4/17

5:55 am-4:00 pm

1 stop17h 05m

Chicago O'Hare Intl

Sat 4/25

6:05 pm-8:05 pm

1 stop19h 00m

$508

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Thu 4/23

9:00 pm-4:00 pm

1 stop26h 00m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-8:05 pm

1 stop19h 00m

$533

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Thu 6/25

6:55 pm-1:10 pm

1 stop25h 15m

Chicago O'Hare Intl

Tue 7/7

3:00 pm-12:25 pm

1 stop14h 25m

$591

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Tue 6/23

11:35 am-1:10 pm

1 stop32h 35m

Chicago O'Hare Intl

Tue 7/7

3:00 pm-10:45 am

1 stop12h 45m

$593

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 4/19

8:30 am-1:25 pm

1 stop11h 55m

Lambert-St Louis

Mon 4/27

1:10 pm-10:10 am

2 stops14h 00m

$662

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 4/17

12:00 pm-7:22 pm

1 stop14h 22m

Lambert-St Louis

Tue 4/21

11:37 am-7:45 am

1 stop13h 08m

$667

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 4/17

12:00 pm-7:22 pm

1 stop14h 22m

Lambert-St Louis

Tue 4/21

11:37 am-7:45 am

1 stop13h 08m

$668

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 4/17

8:30 am-3:48 pm

2 stops14h 18m

Lambert-St Louis

Wed 4/22

3:30 pm-10:10 am

1 stop11h 40m

$669

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 4/17

8:30 am-1:25 pm

1 stop11h 55m

Lambert-St Louis

Tue 4/21

12:15 pm-7:15 am

1 stop12h 00m

$689

BrusselsMoline

BRU - MLI

BRUMLI

Brussels Bruxelles-National

Fri 4/10

12:00 pm-9:06 pm

2 stops16h 06m

Moline Quad-City

Fri 4/17

6:30 am-7:15 am

2 stops17h 45m

$763

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 Brussels 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 Brussels is in September. Flight prices, which tend to average around $559, 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 September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $559.

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

The cheapest day to depart from Brussels to Illinois is on a Thursday when prices can be found for as low as $740. Flights from Brussels to Illinois on a Saturday will generally be more expensive and average around $846. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Brussels to Illinois flight route?

Fly from Brussels Bruxelles-National to Chicago O'Hare Intl for the best Brussels - 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 Brussels when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $688 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Brussels for as low as $586 on momondo.

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

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

Cheap Brussels to Illinois flight deals and tips

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

Fastest flight time	8h 45m
Direct flights	Every day
Airports in Illinois	98 airports

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

Direct flights go from Brussels to Illinois every day.

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

Search flight deals

When did momondo last update prices for flights from Brussels to Illinois?
Prices for flights from Brussels to Illinois were last updated today.
How many operators does momondo search for flights from Brussels to Illinois?
As of February 2026, there are 2 operators available to choose from for flights from Brussels to Illinois.
How old do you have to be to fly from Brussels 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 Brussels 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 Brussels to Illinois

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

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $521	Free Cancellation	Rating 6.8 7,810 reviews		Search Lufthansa flights
United Airlines	PriceFrom $568	Free Cancellation	Rating 7.4 9,348 reviews		Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Brussels to Illinois. Millions of users trust and use momondo every year so you are in good hands.

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

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

How can momondo help me find flights from Brussels 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 Brussels.

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

Yes. momondo can track prices for Brussels to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.