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Cheap flights from Illinois to Brussels from $301

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Brussels departing on 4/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Illinois to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:15 pm - 7:50 pm
ORD
-
BRU
17h 35m
1 stop
Scandinavian Airlines Logo
10:20 am - 4:10 pm
BRU
-
ORD
12h 50m
1 stop
$465Scandinavian Airlines
Fri, May 1 - Fri, May 8
Scandinavian Airlines Logo
7:15 pm - 7:50 pm
ORD
-
BRU
17h 35m
1 stop
Scandinavian Airlines Logo
10:20 am - 4:10 pm
BRU
-
ORD
12h 50m
1 stop
$485Scandinavian Airlines
Fri, May 1 - Fri, May 8
Scandinavian Airlines Logo
7:15 pm - 8:30 pm
ORD
-
BRU
18h 15m
2 stops
Scandinavian Airlines Logo
5:45 am - 4:10 pm
BRU
-
ORD
17h 25m
1 stop
$506Scandinavian Airlines
Mon, Apr 27 - Mon, May 4
Turkish Airlines Logo
11:25 am - 5:55 pm
ORD
-
BRU
23h 30m
1 stop
Turkish Airlines Logo
6:50 pm - 9:40 am
BRU
-
ORD
21h 50m
1 stop
$546Turkish Airlines
Mon, May 4 - Thu, May 14
Turkish Airlines Logo
11:25 am - 1:25 pm
ORD
-
BRU
19h 00m
1 stop
Turkish Airlines Logo
7:20 am - 9:40 am
BRU
-
ORD
33h 20m
1 stop
$548Turkish Airlines
Tue, Apr 28 - Thu, May 21
Multiple Airlines Logo
9:35 pm - 3:05 pm
STL
-
BRU
10h 30m
1 stop
Multiple Airlines Logo
7:05 am - 7:33 pm
BRU
-
STL
19h 28m
2 stops
$702Multiple Airlines
Wed, Apr 29 - Wed, May 6
American Airlines Logo
5:21 pm - 3:05 pm
STL
-
BRU
14h 44m
2 stops
American Airlines Logo
11:00 am - 10:59 pm
BRU
-
STL
18h 59m
2 stops
$704American Airlines
Wed, Apr 29 - Wed, May 6
British Airways Logo
4:30 pm - 3:15 pm
STL
-
BRU
15h 45m
2 stops
British Airways Logo
7:55 pm - 7:30 pm
BRU
-
STL
30h 35m
1 stop
$725British Airways
Tue, Apr 14 - Tue, Apr 28
Multiple Airlines Logo
12:27 pm - 10:35 pm
STL
-
BRU
27h 08m
2 stops
Multiple Airlines Logo
7:05 pm - 7:30 pm
BRU
-
STL
31h 25m
2 stops
$732Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
British Airways Logo
8:54 am - 2:10 pm
STL
-
BRU
22h 16m
2 stops
British Airways Logo
7:55 pm - 7:30 pm
BRU
-
STL
30h 35m
1 stop
$739British Airways
Sun, Apr 19 - Tue, Apr 28

Turkish Airlines flights from Illinois to Brussels Bruxelles-National Airport

Our best Turkish Airlines deals on Illinois to Brussels Bruxelles-National Airport flight tickets
Turkish Airlines
May 4
ORD11:25 amChicago O'Hare Intl
23h 30m
1 stop
BRU5:55 pmBrussels Bruxelles-National
May 14
BRU6:50 pmBrussels Bruxelles-National
21h 50m
1 stop
ORD9:40 amChicago O'Hare Intl
$546
Turkish Airlines
Apr 28
ORD11:25 amChicago O'Hare Intl
19h 00m
1 stop
BRU1:25 pmBrussels Bruxelles-National
May 21
BRU7:20 amBrussels Bruxelles-National
33h 20m
1 stop
ORD9:40 amChicago O'Hare Intl
$548
Turkish Airlines
Apr 28
ORD11:25 amChicago O'Hare Intl
15h 45m
1 stop
BRU10:10 amBrussels Bruxelles-National
May 5
BRU2:25 pmBrussels Bruxelles-National
26h 15m
1 stop
ORD9:40 amChicago O'Hare Intl
$549

British Airways flights from Illinois to Brussels Bruxelles-National Airport

Our best British Airways deals on Illinois to Brussels Bruxelles-National Airport flight tickets
British Airways
Apr 14
STL4:30 pmLambert-St Louis
15h 45m
2 stops
BRU3:15 pmBrussels Bruxelles-National
Apr 28
BRU7:55 pmBrussels Bruxelles-National
30h 35m
1 stop
STL7:30 pmLambert-St Louis
$725
British Airways
Apr 19
STL8:54 amLambert-St Louis
22h 16m
2 stops
BRU2:10 pmBrussels Bruxelles-National
Apr 28
BRU7:55 pmBrussels Bruxelles-National
30h 35m
1 stop
STL7:30 pmLambert-St Louis
$739
British Airways
Apr 28
STL9:35 pmLambert-St Louis
10h 40m
1 stop
BRU3:15 pmBrussels Bruxelles-National
May 5
BRU7:55 pmBrussels Bruxelles-National
30h 35m
2 stops
STL7:30 pmLambert-St Louis
$747

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Brussels Bruxelles-National Airport 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 20, 2026.
Use the filters below to find and compare flights from Illinois to Brussels Bruxelles-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 5/1

7:15 pm-7:50 pm

1 stop17h 35m

Brussels Bruxelles-National

Fri 5/8

10:20 am-4:10 pm

1 stop12h 50m

$465

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 5/1

7:15 pm-7:50 pm

1 stop17h 35m

Brussels Bruxelles-National

Fri 5/8

10:20 am-4:10 pm

1 stop12h 50m

$485

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 4/27

7:15 pm-8:30 pm

2 stops18h 15m

Brussels Bruxelles-National

Mon 5/4

5:45 am-4:10 pm

1 stop17h 25m

$506

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 5/4

11:25 am-5:55 pm

1 stop23h 30m

Brussels Bruxelles-National

Thu 5/14

6:50 pm-9:40 am

1 stop21h 50m

$546

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 4/28

11:25 am-1:25 pm

1 stop19h 00m

Brussels Bruxelles-National

Thu 5/21

7:20 am-9:40 am

1 stop33h 20m

$548
Quickest round-trip

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/29

9:35 pm-3:05 pm

1 stop10h 30m

Brussels Bruxelles-National

Wed 5/6

7:05 am-7:33 pm

2 stops19h 28m

$702

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/29

5:21 pm-3:05 pm

2 stops14h 44m

Brussels Bruxelles-National

Wed 5/6

11:00 am-10:59 pm

2 stops18h 59m

$704

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 4/14

4:30 pm-3:15 pm

2 stops15h 45m

Brussels Bruxelles-National

Tue 4/28

7:55 pm-7:30 pm

1 stop30h 35m

$725

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 4/19

12:27 pm-10:35 pm

2 stops27h 08m

Brussels Bruxelles-National

Tue 4/28

7:05 pm-7:30 pm

2 stops31h 25m

$732

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 4/19

8:54 am-2:10 pm

2 stops22h 16m

Brussels Bruxelles-National

Tue 4/28

7:55 pm-7:30 pm

1 stop30h 35m

$739

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 Brussels from

How to get the cheapest flight ticket from Illinois to Brussels Bruxelles-National Airport

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 Brussels Bruxelles-National Airport?

The cheapest month to fly to Brussels Bruxelles-National Airport from Illinois is in February. Flight prices, which tend to average around $512, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Brussels Bruxelles-National Airport from Illinois during January instead. Flights to Brussels Bruxelles-National Airport in January, while not as cheap as those in February, still average around $556.

What is the cheapest day to depart on your flight to Brussels Bruxelles-National Airport?

The cheapest day to depart from Illinois to Brussels Bruxelles-National Airport is on a Tuesday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Tuesday will often find tickets for as low as $1,058. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Brussels Bruxelles-National Airport for around $1,304.

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

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

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

You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $721 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels Bruxelles-National Airport from Illinois for as low as $475 on momondo.

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

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

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

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

Best Price Found

$797

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Brussels Bruxelles-National Airport from Illinois in the past 72 hours is $797. The best round-trip flight deal from Illinois to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $932.
The fastest flight from Illinois to Brussels Bruxelles-National Airport takes 8h 00m
Direct flights go from Illinois to Brussels Bruxelles-National Airport every day.
Search flight deals

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

    Prices for flights from Illinois to Brussels Bruxelles-National Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Brussels Bruxelles-National Airport.

  • What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?

    The travel and health documents you'll need for your trip to Brussels Bruxelles-National Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Brussels Bruxelles-National Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Illinois to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Illinois to Brussels Bruxelles-National Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $298Free CancellationRating
7.3
1,720 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $418Free CancellationRating
7.0
625 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $419Free CancellationRating
7.3
4,259 reviews
Search Turkish Airlines flights
TAP AIR PORTUGALPriceFrom $444Free CancellationRating
7.1
2,171 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $531Free CancellationRating
7.2
1,480 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $589Free CancellationRating
7.4
9,451 reviews
Search United Airlines flights
Brussels AirlinesPriceFrom $752Free CancellationRating
7.2
391 reviews
Search Brussels Airlines flights
LufthansaPriceFrom $969Free CancellationRating
6.8
7,858 reviews
Search Lufthansa flights

Traveling to a place near Brussels?

Book flights to Brussels if you plan to visit one of these locations
Ghent
Bruges
Leuven
Charleroi
Zaventem
Hasselt
Genk
Namur
Dinant
Waterloo
Mons
Durbuy
Aalst
Spa
Knokke-Heist
Mechelen
Francorchamps
Tournai
Oostkamp
Halle

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Brussels for you.

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

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

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

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 Illinois to Brussels.

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

If you are simply researching potential flights to Brussels, momondo offers a useful price alert feature which will track prices for flights to Brussels from Illinois and alert you when they change.

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