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Cheap flights from Brussels Bruxelles-National Airport to Illinois from $442

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Brussels Bruxelles-National Airport to Illinois departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Brussels Bruxelles-National Airport to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
ITA Airways Logo
6:55 pm - 1:10 pm
BRU
-
ORD
25h 15m
1 stop
ITA Airways Logo
3:00 pm - 6:00 pm
ORD
-
BRU
20h 00m
1 stop
$645ITA Airways
Wed, Jul 22 - Sat, Aug 8
ITA Airways Logo
6:55 pm - 1:10 pm
BRU
-
ORD
25h 15m
1 stop
ITA Airways Logo
3:00 pm - 6:00 pm
ORD
-
BRU
20h 00m
1 stop
$647ITA Airways
Tue, Aug 25 - Mon, Sep 28
Icelandair Logo
1:50 pm - 6:15 pm
BRU
-
ORD
11h 25m
1 stop
Icelandair Logo
7:25 pm - 12:55 pm
ORD
-
BRU
10h 30m
1 stop
$652Icelandair
Fri, Aug 28 - Fri, Sep 25
Icelandair Logo
1:50 pm - 9:25 pm
BRU
-
ORD
14h 35m
1 stop
Icelandair Logo
7:25 pm - 12:55 pm
ORD
-
BRU
10h 30m
1 stop
$653Icelandair
Tue, Aug 25 - Tue, Sep 22
Multiple Airlines Logo
9:25 pm - 6:15 pm
BRU
-
ORD
51h 50m
2 stops
Multiple Airlines Logo
6:30 pm - 9:10 pm
ORD
-
BRU
19h 40m
2 stops
$679Multiple Airlines
Mon, Sep 28 - Sun, Nov 29
Lufthansa Logo
7:00 am - 1:25 pm
BRU
-
STL
13h 25m
1 stop
Lufthansa Logo
1:13 pm - 9:00 am
STL
-
BRU
12h 47m
1 stop
$772Lufthansa
Sun, May 17 - Sun, May 24
Lufthansa Logo
8:30 am - 4:39 pm
BRU
-
STL
15h 09m
2 stops
Lufthansa Logo
1:13 pm - 9:00 am
STL
-
BRU
12h 47m
1 stop
$773Lufthansa
Sun, May 17 - Sun, May 24
United Airlines Logo
6:20 am - 1:25 pm
BRU
-
STL
14h 05m
1 stop
United Airlines Logo
10:24 am - 9:00 am
STL
-
BRU
15h 36m
1 stop
$790United Airlines
Fri, Aug 28 - Tue, Sep 1
United Airlines Logo
6:20 am - 1:25 pm
BRU
-
STL
14h 05m
1 stop
United Airlines Logo
8:44 am - 7:15 am
STL
-
BRU
15h 31m
1 stop
$791United Airlines
Fri, Aug 28 - Tue, Sep 1
Multiple Airlines Logo
9:45 am - 4:12 pm
BRU
-
MDW
13h 27m
1 stop
Multiple Airlines Logo
12:53 pm - 7:40 am
MDW
-
BRU
11h 47m
1 stop
$814Multiple Airlines
Thu, May 21 - Thu, Jun 4

United Airlines flights from Brussels Bruxelles-National Airport to Illinois

Our best United Airlines deals on Brussels Bruxelles-National Airport to Illinois flight tickets
United Airlines
Jun 22
BRU12:00 pmBrussels Bruxelles-National
13h 55m
1 stop
ORD6:55 pmChicago O'Hare Intl
Jul 8
ORD11:07 amChicago O'Hare Intl
13h 08m
1 stop
BRU7:15 amBrussels Bruxelles-National
$714
United Airlines
May 20
BRU11:10 amBrussels Bruxelles-National
14h 16m
1 stop
ORD6:26 pmChicago O'Hare Intl
May 24
ORD6:00 pmChicago O'Hare Intl
8h 00m
BRU9:00 amBrussels Bruxelles-National
$754
United Airlines
Aug 28
BRU6:20 amBrussels Bruxelles-National
14h 05m
1 stop
STL1:25 pmLambert-St Louis
Sep 1
STL10:24 amLambert-St Louis
15h 36m
1 stop
BRU9:00 amBrussels Bruxelles-National
$790

Turkish Airlines flights from Brussels Bruxelles-National Airport to Illinois

Our best Turkish Airlines deals on Brussels Bruxelles-National Airport to Illinois flight tickets
Turkish Airlines
Oct 29
BRU7:50 amBrussels Bruxelles-National
33h 15m
1 stop
ORD11:05 amChicago O'Hare Intl
Nov 19
ORD11:50 amChicago O'Hare Intl
27h 20m
1 stop
BRU10:10 pmBrussels Bruxelles-National
$781
Turkish Airlines
Oct 29
BRU7:50 amBrussels Bruxelles-National
33h 15m
1 stop
ORD11:05 amChicago O'Hare Intl
Nov 19
ORD11:50 amChicago O'Hare Intl
19h 25m
1 stop
BRU2:15 pmBrussels Bruxelles-National
$783

momondo Fare Finder

 
Customize your flight search to find flights from Brussels Bruxelles-National Airport to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 5, 2026.
Use the filters below to find and compare flights from Brussels Bruxelles-National Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Wed 7/22

6:55 pm-1:10 pm

1 stop25h 15m

Chicago O'Hare Intl

Sat 8/8

3:00 pm-6:00 pm

1 stop20h 00m

$645

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Tue 8/25

6:55 pm-1:10 pm

1 stop25h 15m

Chicago O'Hare Intl

Mon 9/28

3:00 pm-6:00 pm

1 stop20h 00m

$647
Quickest round-trip

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Fri 8/28

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Fri 9/25

7:25 pm-12:55 pm

1 stop10h 30m

$652

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Tue 8/25

1:50 pm-9:25 pm

1 stop14h 35m

Chicago O'Hare Intl

Tue 9/22

7:25 pm-12:55 pm

1 stop10h 30m

$653

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Mon 9/28

9:25 pm-6:15 pm

2 stops51h 50m

Chicago O'Hare Intl

Sun 11/29

6:30 pm-9:10 pm

2 stops19h 40m

$679

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 5/17

7:00 am-1:25 pm

1 stop13h 25m

Lambert-St Louis

Sun 5/24

1:13 pm-9:00 am

1 stop12h 47m

$772

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 5/17

8:30 am-4:39 pm

2 stops15h 09m

Lambert-St Louis

Sun 5/24

1:13 pm-9:00 am

1 stop12h 47m

$773

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 8/28

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Tue 9/1

10:24 am-9:00 am

1 stop15h 36m

$790

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 8/28

6:20 am-1:25 pm

1 stop14h 05m

Lambert-St Louis

Tue 9/1

8:44 am-7:15 am

1 stop15h 31m

$791

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

Thu 5/21

9:45 am-4:12 pm

1 stop13h 27m

Chicago Midway

Thu 6/4

12:53 pm-7:40 am

1 stop11h 47m

$814

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Brussels Bruxelles-National Airport 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 Brussels Bruxelles-National Airport 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 Bruxelles-National Airport to Illinois is on a Sunday when prices can be found for as low as $732. Flights from Brussels Bruxelles-National Airport to Illinois on a Saturday will generally be more expensive and average around $944. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Brussels Bruxelles-National to Illinois flight route?

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

How far in advance should I book a flight from Brussels Bruxelles-National Airport to Illinois?

You are more likely to see cheaper flights to Illinois from Brussels Bruxelles-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $724 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Brussels Bruxelles-National Airport for as low as $592 on momondo.

Can stopping save me money on Brussels Bruxelles-National Airport to Illinois flights?

You could potentially save up to 20% on your flight if you consider stops on a Brussels Bruxelles-National Airport to Illinois flight.

Cheap Brussels Bruxelles-National Airport to Illinois flight deals and tips

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

Best Price Found

$923

Fastest flight time

8h 45m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Brussels Bruxelles-National Airport in the past 72 hours is $923. The best round-trip flight deal from Brussels Bruxelles-National Airport to Illinois found on momondo in the last 72 hours is $888.
The fastest flight from Brussels Bruxelles-National Airport to Illinois takes 8h 45m
Direct flights go from Brussels Bruxelles-National Airport to Illinois every day.
There are 98 airports in Illinois. From Brussels Bruxelles-National Airport there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

Frequently asked questions about flying from Brussels Bruxelles-National Airport to Illinois

  • When did momondo last update prices for flights from Brussels Bruxelles-National Airport to Illinois?

    Prices for flights from Brussels Bruxelles-National Airport to Illinois are updated daily.

  • How many operators does momondo search for flights from Brussels Bruxelles-National Airport to Illinois?

  • How old do you have to be to fly from Brussels Bruxelles-National Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Brussels Bruxelles-National Airport to Illinois.

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

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Brussels Bruxelles-National Airport to Illinois?

Best airlines flying from Brussels Bruxelles-National Airport to Illinois

Compare and see reviews for airlines that fly from Brussels Bruxelles-National Airport to Illinois with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $521Free CancellationRating
6.8
7,972 reviews
Search Lufthansa flights
United AirlinesPriceFrom $609Free CancellationRating
7.4
9,683 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Brussels to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

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

All flight searches from Brussels to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Brussels to Illinois.

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

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

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