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Cheap flights from Chicago to Brussels from $223

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Brussels departing on 11/18. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
10:40 am - 9:40 amORD-BRU
16h 00m2 stops
Scandinavian Airlines Logo
7:45 pm - 4:45 pmBRU-ORD
28h 00m2 stops
$420Scandinavian Airlines
Find Deal
Tue, Feb 24 - Sun, Mar 1
Scandinavian Airlines Logo
7:20 pm - 2:30 pmORD-BRU
12h 10m1 stop
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$438Scandinavian Airlines
Find Deal
Wed, Jan 14 - Mon, Jan 19
Scandinavian Airlines Logo
7:20 pm - 10:50 amORD-BRU
32h 30m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$442Scandinavian Airlines
Find Deal
Wed, Jan 14 - Mon, Jan 19
Aer Lingus Logo
7:40 pm - 6:15 pmORD-BRU
15h 35m1 stop
Aer Lingus Logo
10:15 am - 5:55 pmBRU-ORD
14h 40m1 stop
$463Aer Lingus
Find Deal
Mon, Dec 8 - Tue, Dec 16
Aer Lingus Logo
7:40 pm - 6:15 pmORD-BRU
15h 35m1 stop
Aer Lingus Logo
10:15 am - 5:55 pmBRU-ORD
14h 40m1 stop
$470Aer Lingus
Find Deal
Wed, Nov 19 - Wed, Nov 26
Multiple Airlines Logo
7:10 pm - 10:50 pmORD-CRL
20h 40m2 stops
Multiple Airlines Logo
10:35 am - 3:00 pmCRL-ORD
35h 25m2 stops
$504Multiple Airlines
Find Deal
Wed, Feb 11 - Tue, Feb 17
Multiple Airlines Logo
7:10 am - 1:45 pmORD-BRU
23h 35m2 stops
Multiple Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$518Multiple Airlines
Find Deal
Tue, Nov 11 - Mon, Nov 17
Delta Logo
1:05 pm - 8:40 amMDW-BRU
12h 35m1 stop
Delta Logo
10:45 am - 9:45 pmBRU-MDW
18h 00m1 stop
$766Delta
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Sun, Apr 12 - Thu, Apr 30
Delta Logo
6:00 am - 8:00 amMDW-BRU
20h 00m1 stop
Delta Logo
10:45 am - 9:56 amBRU-MDW
29h 11m2 stops
$776Delta
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Wed, Mar 11 - Fri, Mar 20
KLM Logo
1:15 pm - 7:35 amMDW-BRU
11h 20m2 stops
KLM Logo
10:45 am - 6:08 pmBRU-MDW
14h 23m2 stops
$2,164KLM
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Fri, Nov 21 - Sat, Nov 29

Aer Lingus flights from Chicago to Brussels

Our best Aer Lingus deals on Chicago to Brussels flight tickets
Aer Lingus
Dec 8
ORD7:40 pmChicago O'Hare Intl
15h 35m
1 stop
BRU6:15 pmBrussels Bruxelles-National
Dec 16
BRU10:15 amBrussels Bruxelles-National
14h 40m
1 stop
ORD5:55 pmChicago O'Hare Intl
$463
Find similar
Aer Lingus
Nov 19
ORD7:40 pmChicago O'Hare Intl
15h 35m
1 stop
BRU6:15 pmBrussels Bruxelles-National
Nov 26
BRU10:15 amBrussels Bruxelles-National
14h 40m
1 stop
ORD5:55 pmChicago O'Hare Intl
$470
Find similar
Aer Lingus
Nov 9
ORD3:50 pmChicago O'Hare Intl
10h 45m
1 stop
BRU9:35 amBrussels Bruxelles-National
Nov 11
BRU10:15 amBrussels Bruxelles-National
14h 40m
1 stop
ORD5:55 pmChicago O'Hare Intl
$515
Find similar

Scandinavian Airlines flights from Chicago to Brussels

Our best Scandinavian Airlines deals on Chicago to Brussels flight tickets
Scandinavian Airlines
Feb 24
ORD10:40 amChicago O'Hare Intl
16h 00m
2 stops
BRU9:40 amBrussels Bruxelles-National
Mar 1
BRU7:45 pmBrussels Bruxelles-National
28h 00m
2 stops
ORD4:45 pmChicago O'Hare Intl
$420
Find similar
Scandinavian Airlines
Jan 14
ORD7:20 pmChicago O'Hare Intl
12h 10m
1 stop
BRU2:30 pmBrussels Bruxelles-National
Jan 19
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$438
Find similar
Scandinavian Airlines
Jan 14
ORD7:20 pmChicago O'Hare Intl
32h 30m
2 stops
BRU10:50 amBrussels Bruxelles-National
Jan 19
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$442
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 October 16, 2025.
Use the filters below to find and compare flights from Chicago to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 2/24

10:40 am-9:40 am

2 stops16h 00m

Brussels Bruxelles-National

Sun 3/1

7:45 pm-4:45 pm

2 stops28h 00m

$420

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 1/14

7:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Mon 1/19

10:20 am-4:45 pm

1 stop13h 25m

$438

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 1/14

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Mon 1/19

10:20 am-4:45 pm

1 stop13h 25m

$442

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 12/8

7:40 pm-6:15 pm

1 stop15h 35m

Brussels Bruxelles-National

Tue 12/16

10:15 am-5:55 pm

1 stop14h 40m

$463

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 11/19

7:40 pm-6:15 pm

1 stop15h 35m

Brussels Bruxelles-National

Wed 11/26

10:15 am-5:55 pm

1 stop14h 40m

$470

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Wed 2/11

7:10 pm-10:50 pm

2 stops20h 40m

Charleroi Brussels

Tue 2/17

10:35 am-3:00 pm

2 stops35h 25m

$504

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/11

7:10 am-1:45 pm

2 stops23h 35m

Brussels Bruxelles-National

Mon 11/17

10:20 am-4:45 pm

1 stop13h 25m

$518

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sun 4/12

1:05 pm-8:40 am

1 stop12h 35m

Brussels Bruxelles-National

Thu 4/30

10:45 am-9:45 pm

1 stop18h 00m

$766

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Wed 3/11

6:00 am-8:00 am

1 stop20h 00m

Brussels Bruxelles-National

Fri 3/20

10:45 am-9:56 am

2 stops29h 11m

$776

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Fri 11/21

1:15 pm-7:35 am

2 stops11h 20m

Brussels Bruxelles-National

Sat 11/29

10:45 am-6:08 pm

2 stops14h 23m

$2,164

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 Chicago 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 typical price of a round-trip flight between Chicago and Brussels?

What is the cheapest month to fly to Brussels?

In general, April is the cheapest month to fly from Chicago to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $579. If you are unable to visit Brussels during the month of April, then departing from Chicago during the month February is also very affordable. Most momondo users find prices during this month for around $597.

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

On average, the least expensive day to fly to Brussels from Chicago is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,101. 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 Chicago because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,411.

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

According to our data, the cheapest time of day to fly to Brussels is in the evening. momondo users have found flights departing from Chicago to Brussels in the evening for as low as $579. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $1,197.

What is the cheapest Chicago to Brussels flight route?

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

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

You are more likely to see cheaper flights to Brussels from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around $794 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from Chicago for as low as $614 on momondo.

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

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

Cheap Chicago to Brussels flight deals and tips

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

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Brussels

1 airport
The fastest flight from Chicago to Brussels takes 8h 00m
Direct flights go from Chicago to Brussels every day.
There is 1 airport near Brussels: Brussels Bruxelles-National (BRU)
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  • How far is Chicago to Brussels by plane?

    The distance between Chicago and Brussels is about 4136.1 mi. By plane, this route typically takes 10h 45m.

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

    Prices for flights from Chicago to Brussels refresh daily.

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

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

    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 Chicago 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 Chicago to Brussels

Compare and see reviews for airlines that fly from Chicago to Brussels with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $310Free CancellationRating
7.4
1,533 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $428Free CancellationRating
7.0
556 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $492Free CancellationRating
7.3
4,010 reviews
Search Turkish Airlines flights
KLMPriceFrom $506Free CancellationRating
7.7
1,404 reviews
Search KLM flights
British AirwaysPriceFrom $551Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
Aer LingusPriceFrom $581Free CancellationRating
7.2
1,341 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $744Free CancellationRating
7.1
2,016 reviews
Search TAP AIR PORTUGAL flights
LufthansaPriceFrom $754Free CancellationRating
6.8
7,497 reviews
Search Lufthansa flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Brussels. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 Brussels from Chicago.

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

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