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Cheap flights from Brussels Bruxelles-National Airport to Illinois from $404

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 6/17. 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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0 bags

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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.
TAP AIR PORTUGAL Logo
5:55 am - 4:05 pm
BRU
-
ORD
17h 10m
1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 8:05 pm
ORD
-
BRU
19h 05m
1 stop
$553TAP AIR PORTUGAL
Sat, May 2 - Sun, May 3
ITA Airways Logo
11:35 am - 1:10 pm
BRU
-
ORD
32h 35m
1 stop
ITA Airways Logo
3:00 pm - 6:00 pm
ORD
-
BRU
20h 00m
1 stop
$558ITA Airways
Wed, Jun 10 - Thu, Jul 9
Lufthansa Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
Lufthansa Logo
11:37 am - 7:45 am
STL
-
BRU
13h 08m
1 stop
$714Lufthansa
Fri, Apr 17 - Tue, Apr 21
Lufthansa Logo
8:30 am - 3:48 pm
BRU
-
STL
14h 18m
2 stops
Lufthansa Logo
11:37 am - 7:45 am
STL
-
BRU
13h 08m
1 stop
$716Lufthansa
Fri, Apr 17 - Tue, Apr 21
Multiple Airlines Logo
10:30 am - 3:25 pm
BRU
-
STL
35h 55m
2 stops
Multiple Airlines Logo
4:05 pm - 1:15 pm
STL
-
BRU
14h 10m
2 stops
$718Multiple Airlines
Fri, Apr 17 - Tue, Apr 21
Multiple Airlines Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
Multiple Airlines Logo
9:10 am - 7:10 am
STL
-
BRU
15h 00m
2 stops
$721Multiple Airlines
Fri, Apr 17 - Tue, Apr 21
United Airlines Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
United Airlines Logo
9:10 am - 9:00 am
STL
-
BRU
16h 50m
1 stop
$726United Airlines
Fri, Apr 17 - Tue, Apr 21
United Airlines Logo
8:30 am - 1:25 pm
BRU
-
STL
11h 55m
1 stop
United Airlines Logo
6:30 am - 7:10 am
STL
-
BRU
17h 40m
2 stops
$729United Airlines
Fri, Apr 17 - Tue, Apr 21
Delta Logo
9:45 am - 4:29 pm
BRU
-
MDW
13h 44m
1 stop
Delta Logo
9:27 am - 7:40 am
MDW
-
BRU
15h 13m
2 stops
$737Delta
Thu, Apr 16 - Mon, Apr 20
Delta Logo
8:05 am - 6:33 pm
BRU
-
MDW
17h 28m
2 stops
Delta Logo
6:23 am - 7:40 am
MDW
-
BRU
18h 17m
1 stop
$738Delta
Wed, May 20 - Fri, Jun 5

ITA Airways flights from Brussels Bruxelles-National Airport to Illinois

Our best ITA Airways deals on Brussels Bruxelles-National Airport to Illinois flight tickets
ITA Airways
Jun 10
BRU11:35 amBrussels Bruxelles-National
32h 35m
1 stop
ORD1:10 pmChicago O'Hare Intl
Jul 9
ORD3:00 pmChicago O'Hare Intl
20h 00m
1 stop
BRU6:00 pmBrussels Bruxelles-National
$558
ITA Airways
Sep 2
BRU6:55 pmBrussels Bruxelles-National
25h 15m
1 stop
ORD1:10 pmChicago O'Hare Intl
Sep 9
ORD10:50 amChicago O'Hare Intl
16h 55m
2 stops
BRU10:45 amBrussels Bruxelles-National
$576
ITA Airways
Sep 2
BRU6:55 pmBrussels Bruxelles-National
25h 15m
1 stop
ORD1:10 pmChicago O'Hare Intl
Sep 9
ORD8:40 amChicago O'Hare Intl
19h 05m
2 stops
BRU10:45 amBrussels Bruxelles-National
$578

Icelandair flights from Brussels Bruxelles-National Airport to Illinois

Our best Icelandair deals on Brussels Bruxelles-National Airport to Illinois flight tickets
Icelandair
May 17
BRU1:50 pmBrussels Bruxelles-National
14h 35m
1 stop
ORD9:25 pmChicago O'Hare Intl
May 30
ORD10:25 pmChicago O'Hare Intl
31h 30m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$624
Icelandair
May 17
BRU1:50 pmBrussels Bruxelles-National
14h 35m
1 stop
ORD9:25 pmChicago O'Hare Intl
May 30
ORD10:25 pmChicago O'Hare Intl
31h 30m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$657
Icelandair
May 20
BRU1:50 pmBrussels Bruxelles-National
14h 35m
1 stop
ORD9:25 pmChicago O'Hare Intl
May 24
ORD10:25 pmChicago O'Hare Intl
31h 30m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$667

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 March 18, 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

Sat 5/2

5:55 am-4:05 pm

1 stop17h 10m

Chicago O'Hare Intl

Sun 5/3

6:00 pm-8:05 pm

1 stop19h 05m

$553

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Wed 6/10

11:35 am-1:10 pm

1 stop32h 35m

Chicago O'Hare Intl

Thu 7/9

3:00 pm-6:00 pm

1 stop20h 00m

$558
Quickest round-trip

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

11:37 am-7:45 am

1 stop13h 08m

$714

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 4/17

8:30 am-3:48 pm

2 stops14h 18m

Lambert-St Louis

Tue 4/21

11:37 am-7:45 am

1 stop13h 08m

$716

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Fri 4/17

10:30 am-3:25 pm

2 stops35h 55m

Lambert-St Louis

Tue 4/21

4:05 pm-1:15 pm

2 stops14h 10m

$718

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

9:10 am-7:10 am

2 stops15h 00m

$721

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

9:10 am-9:00 am

1 stop16h 50m

$726

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

6:30 am-7:10 am

2 stops17h 40m

$729

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

Thu 4/16

9:45 am-4:29 pm

1 stop13h 44m

Chicago Midway

Mon 4/20

9:27 am-7:40 am

2 stops15h 13m

$737

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

Wed 5/20

8:05 am-6:33 pm

2 stops17h 28m

Chicago Midway

Fri 6/5

6:23 am-7:40 am

1 stop18h 17m

$738

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 September. Flight prices, which tend to average around $555, 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 February is also cheap. Prices for this month can be found on momondo for an average of $561.

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 Thursday when prices can be found for as low as $740. Flights from Brussels Bruxelles-National Airport to Illinois on a Saturday will generally be more expensive and average around $853. 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 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 $699 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 $586 on momondo.

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

There are 3 cabin classes available to choose from on Brussels Bruxelles-National 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 Brussels Bruxelles-National Airport to Illinois flights?

You could potentially save up to 30% 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

$769

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 $769. The best round-trip flight deal from Brussels Bruxelles-National Airport to Illinois found on momondo in the last 72 hours is $730.
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

  • 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
7,858 reviews
Search Lufthansa flights
United AirlinesPriceFrom $568Free CancellationRating
7.4
9,435 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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