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

42 flights are operational weekly from Brussels to Illinois as of June 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 June 2026. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.

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

American Airlines, British Airways, and TAP AIR PORTUGAL are the most popular carriers operating from Brussels to Illinois

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 June 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.

$364 Cheap Flights from Brussels to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Brussels to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:05 am - 11:42 pm

BRU

STL

23h 37m

2 stops

9:40 pm - 8:00 pm

STL

BRU

15h 20m

1 stop

$741Multiple Airlines

Mon, Aug 24 - Sun, Sep 13

12:05 pm - 10:39 am

BRU

STL

29h 34m

2 stops

11:01 am - 10:35 pm

STL

BRU

28h 34m

2 stops

$757Multiple Airlines

Mon, Aug 24 - Sun, Sep 13

6:20 am - 1:25 pm

BRU

STL

14h 05m

1 stop

12:10 pm - 7:10 am

STL

BRU

12h 00m

1 stop

$767Multiple Airlines

Mon, Jun 29 - Sun, Jul 5

6:20 am - 3:46 pm

BRU

STL

16h 26m

2 stops

12:55 pm - 7:15 am

STL

BRU

11h 20m

1 stop

$771Lufthansa

Mon, Jun 29 - Sun, Jul 5

6:20 am - 1:25 pm

BRU

STL

14h 05m

1 stop

1:13 pm - 9:00 am

STL

BRU

12h 47m

1 stop

$774Lufthansa

Mon, Jun 29 - Sun, Jul 5

6:20 am - 1:25 pm

BRU

STL

14h 05m

1 stop

12:55 pm - 7:15 am

STL

BRU

11h 20m

1 stop

$780United Airlines

Mon, Jun 29 - Sun, Jul 5

6:20 am - 1:25 pm

BRU

STL

14h 05m

1 stop

12:55 pm - 7:15 am

STL

BRU

11h 20m

1 stop

$782United Airlines

Mon, Jun 29 - Sun, Jul 5

9:40 am - 8:07 pm

BRU

STL

17h 27m

2 stops

8:55 am - 7:10 am

STL

BRU

15h 15m

2 stops

$786Air Canada

Mon, Jun 29 - Sun, Jul 5

9:45 am - 4:57 pm

BRU

ORD

14h 12m

2 stops

8:45 am - 7:10 am

ORD

BRU

15h 25m

1 stop

$808Air Canada

Fri, Jun 26 - Thu, Jul 9

1:50 pm - 6:15 pm

BRU

ORD

11h 25m

1 stop

7:25 pm - 12:55 pm

ORD

BRU

10h 30m

1 stop

$809Icelandair

Sat, Jun 27 - Tue, Aug 4

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SWISS flights from Brussels to Illinois

Our best SWISS deals on Brussels to Illinois flight tickets

SWISS

Jul 15

BRU9:40 amBrussels Bruxelles-National

33h 55m

1 stop

ORD12:35 pmChicago O'Hare Intl

Jul 25

ORD2:40 pmChicago O'Hare Intl

15h 05m

2 stops

BRU12:45 pmBrussels Bruxelles-National

$856

SWISS

Jun 25

BRU6:55 amBrussels Bruxelles-National

13h 00m

1 stop

ORD12:55 pmChicago O'Hare Intl

Jul 8

ORD4:30 pmChicago O'Hare Intl

14h 45m

2 stops

BRU2:15 pmBrussels Bruxelles-National

$897

ITA Airways flights from Brussels to Illinois

Our best ITA Airways deals on Brussels to Illinois flight tickets

ITA Airways

Jun 18

BRU7:15 amBrussels Bruxelles-National

36h 55m

1 stop

ORD1:10 pmChicago O'Hare Intl

Jun 28

ORD3:00 pmChicago O'Hare Intl

12h 45m

1 stop

BRU10:45 amBrussels Bruxelles-National

$834

ITA Airways

Aug 27

BRU6:55 pmBrussels Bruxelles-National

29h 27m

2 stops

ORD5:22 pmChicago O'Hare Intl

Sep 3

ORD3:00 pmChicago O'Hare Intl

21h 15m

2 stops

BRU7:15 pmBrussels Bruxelles-National

$838

ITA Airways

Jul 24

BRU10:50 amBrussels Bruxelles-National

33h 20m

2 stops

ORD1:10 pmChicago O'Hare Intl

Aug 18

ORD3:00 pmChicago O'Hare Intl

19h 55m

1 stop

BRU5:55 pmBrussels Bruxelles-National

$850

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 8/24

7:05 am-11:42 pm

2 stops23h 37m

Lambert-St Louis

Sun 9/13

9:40 pm-8:00 pm

1 stop15h 20m

$741

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 8/24

12:05 pm-10:39 am

2 stops29h 34m

Lambert-St Louis

Sun 9/13

11:01 am-10:35 pm

2 stops28h 34m

$757

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/29

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Sun 7/5

12:10 pm-7:10 am

1 stop12h 00m

$767

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/29

6:20 am-3:46 pm

2 stops16h 26m

Lambert-St Louis

Sun 7/5

12:55 pm-7:15 am

1 stop11h 20m

$771

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/29

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Sun 7/5

1:13 pm-9:00 am

1 stop12h 47m

$774

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/29

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Sun 7/5

12:55 pm-7:15 am

1 stop11h 20m

$780

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/29

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Sun 7/5

12:55 pm-7:15 am

1 stop11h 20m

$782

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Mon 6/29

9:40 am-8:07 pm

2 stops17h 27m

Lambert-St Louis

Sun 7/5

8:55 am-7:10 am

2 stops15h 15m

$786

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Fri 6/26

9:45 am-4:57 pm

2 stops14h 12m

Chicago O'Hare Intl

Thu 7/9

8:45 am-7:10 am

1 stop15h 25m

$808

Quickest round-trip

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Sat 6/27

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Tue 8/4

7:25 pm-12:55 pm

1 stop10h 30m

$809

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 August. Flight prices, which tend to average around $374, 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 August, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $409.

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

The cheapest day to depart from Brussels to Illinois is on a Monday when prices can be found for as low as $821. Flights from Brussels to Illinois on a Saturday will generally be more expensive and average around $1,019. 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 from Brussels 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 $769 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 $625 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

Frequently asked questions about flying from Brussels to Illinois

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 June 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 8,061 reviews		Search Lufthansa flights
United Airlines	PriceFrom $609	Free Cancellation	Rating 7.4 9,831 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.