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Cheap flights from Illinois to Brussels from $330

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 5/29. 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
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 - 8:30 pm
ORD
-
BRU
18h 15m
2 stops
Scandinavian Airlines Logo
8:30 pm - 4:45 pm
BRU
-
ORD
27h 15m
1 stop
$663Scandinavian Airlines
Mon, Oct 5 - Tue, Nov 3
Scandinavian Airlines Logo
7:15 pm - 2:35 pm
ORD
-
BRU
12h 20m
1 stop
Scandinavian Airlines Logo
10:20 am - 4:45 pm
BRU
-
ORD
13h 25m
1 stop
$664Scandinavian Airlines
Mon, Oct 5 - Wed, Nov 4
Turkish Airlines Logo
11:25 am - 9:25 pm
ORD
-
BRU
27h 00m
1 stop
Turkish Airlines Logo
11:20 am - 9:40 am
BRU
-
ORD
29h 20m
1 stop
$686Turkish Airlines
Wed, Sep 16 - Tue, Sep 22
Turkish Airlines Logo
8:10 pm - 9:25 pm
ORD
-
BRU
18h 15m
1 stop
Turkish Airlines Logo
6:55 pm - 9:40 am
BRU
-
ORD
21h 45m
1 stop
$688Turkish Airlines
Wed, Sep 16 - Tue, Sep 22
Multiple Airlines Logo
7:25 pm - 3:30 pm
ORD
-
CRL
13h 05m
2 stops
Multiple Airlines Logo
4:10 pm - 11:50 am
CRL
-
ORD
26h 40m
1 stop
$806Multiple Airlines
Tue, Sep 29 - Wed, Oct 7
Multiple Airlines Logo
8:45 am - 9:00 pm
ORD
-
CRL
29h 15m
2 stops
Multiple Airlines Logo
6:55 am - 10:18 am
CRL
-
ORD
34h 23m
2 stops
$816Multiple Airlines
Sun, May 10 - Tue, May 19
British Airways Logo
9:35 pm - 8:25 pm
STL
-
BRU
15h 50m
1 stop
British Airways Logo
8:50 pm - 7:30 pm
BRU
-
STL
29h 40m
1 stop
$873British Airways
Wed, Sep 30 - Mon, Oct 5
British Airways Logo
9:35 pm - 8:25 pm
STL
-
BRU
15h 50m
1 stop
British Airways Logo
8:50 pm - 7:30 pm
BRU
-
STL
29h 40m
1 stop
$878British Airways
Wed, Sep 30 - Mon, Oct 5
United Airlines Logo
12:10 pm - 7:10 am
STL
-
BRU
12h 00m
1 stop
United Airlines Logo
9:25 am - 11:06 am
BRU
-
STL
32h 41m
2 stops
$896United Airlines
Mon, Aug 31 - Thu, Sep 10
United Airlines Logo
2:17 pm - 8:55 am
PAH
-
BRU
35h 38m
2 stops
United Airlines Logo
9:45 am - 11:40 pm
BRU
-
PAH
20h 55m
2 stops
$1,778United Airlines
Fri, Jun 5 - Fri, Jun 12

Turkish Airlines flights from Illinois to Brussels

Our best Turkish Airlines deals on Illinois to Brussels flight tickets
Turkish Airlines
Sep 16
ORD11:25 amChicago O'Hare Intl
27h 00m
1 stop
BRU9:25 pmBrussels Bruxelles-National
Sep 22
BRU11:20 amBrussels Bruxelles-National
29h 20m
1 stop
ORD9:40 amChicago O'Hare Intl
$686
Turkish Airlines
Sep 16
ORD8:10 pmChicago O'Hare Intl
18h 15m
1 stop
BRU9:25 pmBrussels Bruxelles-National
Sep 22
BRU6:55 pmBrussels Bruxelles-National
21h 45m
1 stop
ORD9:40 amChicago O'Hare Intl
$688
Turkish Airlines
Oct 1
ORD8:10 pmChicago O'Hare Intl
18h 15m
1 stop
BRU9:25 pmBrussels Bruxelles-National
Oct 8
BRU6:50 pmBrussels Bruxelles-National
21h 50m
1 stop
ORD9:40 amChicago O'Hare Intl
$693

Air Canada flights from Illinois to Brussels

Our best Air Canada deals on Illinois to Brussels flight tickets
Air Canada
May 4
STL1:05 pmLambert-St Louis
11h 05m
1 stop
BRU7:10 amBrussels Bruxelles-National
May 12
BRU9:55 amBrussels Bruxelles-National
17h 30m
1 stop
STL8:25 pmLambert-St Louis
$920
Air Canada
May 4
STL2:15 pmLambert-St Louis
22h 45m
2 stops
BRU8:00 pmBrussels Bruxelles-National
May 12
BRU9:55 amBrussels Bruxelles-National
17h 30m
1 stop
STL8:25 pmLambert-St Louis
$925
Air Canada
May 4
STL2:15 pmLambert-St Louis
15h 30m
2 stops
BRU12:45 pmBrussels Bruxelles-National
May 12
BRU9:55 amBrussels Bruxelles-National
18h 18m
2 stops
STL9:13 pmLambert-St Louis
$951

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Brussels 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 April 26, 2026.
Use the filters below to find and compare flights from Illinois to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 10/5

7:15 pm-8:30 pm

2 stops18h 15m

Brussels Bruxelles-National

Tue 11/3

8:30 pm-4:45 pm

1 stop27h 15m

$663
Quickest round-trip

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 10/5

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Wed 11/4

10:20 am-4:45 pm

1 stop13h 25m

$664

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 9/16

11:25 am-9:25 pm

1 stop27h 00m

Brussels Bruxelles-National

Tue 9/22

11:20 am-9:40 am

1 stop29h 20m

$686

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 9/16

8:10 pm-9:25 pm

1 stop18h 15m

Brussels Bruxelles-National

Tue 9/22

6:55 pm-9:40 am

1 stop21h 45m

$688

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Tue 9/29

7:25 pm-3:30 pm

2 stops13h 05m

Charleroi Brussels

Wed 10/7

4:10 pm-11:50 am

1 stop26h 40m

$806

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Sun 5/10

8:45 am-9:00 pm

2 stops29h 15m

Charleroi Brussels

Tue 5/19

6:55 am-10:18 am

2 stops34h 23m

$816

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-8:25 pm

1 stop15h 50m

Brussels Bruxelles-National

Mon 10/5

8:50 pm-7:30 pm

1 stop29h 40m

$873

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-8:25 pm

1 stop15h 50m

Brussels Bruxelles-National

Mon 10/5

8:50 pm-7:30 pm

1 stop29h 40m

$878

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 8/31

12:10 pm-7:10 am

1 stop12h 00m

Brussels Bruxelles-National

Thu 9/10

9:25 am-11:06 am

2 stops32h 41m

$896

PaducahBrussels

PAH - BRU

PAHBRU

Paducah Barkley Regional

Fri 6/5

2:17 pm-8:55 am

2 stops35h 38m

Brussels Bruxelles-National

Fri 6/12

9:45 am-11:40 pm

2 stops20h 55m

$1,778

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

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?

In general, February is the cheapest month to fly from Illinois to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $512. If you are unable to visit Brussels during the month of February, then departing from Illinois during the month January is also very affordable. Most momondo users find prices during this month for around $556.

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

On average, the least expensive day to fly to Brussels from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,040. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,370.

What is the cheapest Illinois to Brussels flight route?

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

How far in advance should I book a flight from Illinois to Brussels?

You are more likely to see cheaper flights to Brussels from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around $743 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from Illinois for as low as $463 on momondo.

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

There are 3 cabin classes available to choose from on Illinois to Brussels 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 flight deals and tips

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

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Brussels

2 airports
The fastest flight from Illinois to Brussels takes 8h 00m
Direct flights go from Illinois to Brussels every day.
There are 2 airports in Brussels. From Illinois there are direct flights to Brussels Bruxelles-National (BRU).
Search flight deals

Frequently asked questions about flying from Illinois to Brussels

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

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

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

  • How old do you have to be to fly from Illinois to Brussels?

    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.

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

    The travel and health documents you'll need for your trip to Brussels 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Brussels

Compare and see reviews for airlines that fly from Illinois to Brussels with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $293Free CancellationRating
7.4
1,761 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $418Free CancellationRating
7.0
642 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $419Free CancellationRating
7.4
4,337 reviews
Search Turkish Airlines flights
TAP AIR PORTUGALPriceFrom $444Free CancellationRating
7.1
2,223 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $481Free CancellationRating
7.3
1,533 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
9,664 reviews
Search United Airlines flights
Brussels AirlinesPriceFrom $752Free CancellationRating
7.2
404 reviews
Search Brussels Airlines flights
LufthansaPriceFrom $969Free CancellationRating
6.8
7,956 reviews
Search Lufthansa flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Brussels. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Brussels from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Illinois to Brussels flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Illinois to Brussels 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.

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Find better results for your trip to Belgium

Fly into one of these airports located in Brussels

Airports listed have a maximum distance of 27.4 mi from Brussels
Brussels Bruxelles-National Airport
Charleroi Brussels Airport