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Cheap flights from Chicago to Brussels from $259

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 1/9. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
6:30 pm - 11:55 amORD-BRU
10h 25m1 stop
Icelandair Logo
12:50 pm - 5:20 pmBRU-ORD
11h 30m1 stop
$384Icelandair
Find Deal
Thu, Feb 19 - Fri, Feb 27
Icelandair Logo
6:30 pm - 11:55 amORD-BRU
10h 25m1 stop
Icelandair Logo
12:50 pm - 5:20 pmBRU-ORD
11h 30m1 stop
$392Icelandair
Find Deal
Wed, Jan 28 - Fri, Feb 6
Scandinavian Airlines Logo
10:36 am - 2:30 pmORD-BRU
20h 54m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$419Scandinavian Airlines
Find Deal
Mon, Feb 16 - Mon, Feb 23
Scandinavian Airlines Logo
10:36 am - 2:30 pmORD-BRU
20h 54m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$420Scandinavian Airlines
Find Deal
Mon, Feb 16 - Mon, Feb 23
Multiple Airlines Logo
6:50 pm - 9:35 pmORD-CRL
19h 45m2 stops
Multiple Airlines Logo
3:30 pm - 1:10 pmCRL-ORD
28h 40m2 stops
$581Multiple Airlines
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Mon, Jan 12 - Tue, Jan 20
Multiple Airlines Logo
11:55 am - 8:25 amORD-CRL
37h 30m2 stops
Multiple Airlines Logo
7:15 am - 2:55 pmCRL-ORD
14h 40m1 stop
$664Multiple Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 8
Delta Logo
1:28 pm - 7:35 amMDW-BRU
11h 07m2 stops
Delta Logo
10:45 am - 5:55 pmBRU-MDW
14h 10m2 stops
$785Delta
Find Deal
Mon, Jan 12 - Tue, Jan 20
Delta Logo
1:28 pm - 10:10 amMDW-BRU
13h 42m2 stops
Delta Logo
8:05 am - 5:55 pmBRU-MDW
16h 50m2 stops
$786Delta
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Mon, Jan 12 - Tue, Jan 20
KLM Logo
1:28 pm - 7:35 amMDW-BRU
11h 07m2 stops
KLM Logo
8:05 am - 4:16 pmBRU-MDW
15h 11m2 stops
$885KLM
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Thu, Feb 19 - Sat, Feb 28
KLM Logo
1:28 pm - 7:35 amMDW-BRU
11h 07m2 stops
KLM Logo
8:05 am - 4:31 pmBRU-MDW
15h 26m2 stops
$900KLM
Find Deal
Thu, Jan 8 - Thu, Jan 15

Icelandair flights from Chicago to Brussels

Our best Icelandair deals on Chicago to Brussels flight tickets
Icelandair
Feb 19
ORD6:30 pmChicago O'Hare Intl
10h 25m
1 stop
BRU11:55 amBrussels Bruxelles-National
Feb 27
BRU12:50 pmBrussels Bruxelles-National
11h 30m
1 stop
ORD5:20 pmChicago O'Hare Intl
$384
Find similar
Icelandair
Feb 19
ORD6:30 pmChicago O'Hare Intl
10h 25m
1 stop
BRU11:55 amBrussels Bruxelles-National
Feb 27
BRU12:50 pmBrussels Bruxelles-National
11h 30m
1 stop
ORD5:20 pmChicago O'Hare Intl
$391
Find similar
Icelandair
Jan 28
ORD6:30 pmChicago O'Hare Intl
10h 25m
1 stop
BRU11:55 amBrussels Bruxelles-National
Feb 6
BRU12:50 pmBrussels Bruxelles-National
11h 30m
1 stop
ORD5:20 pmChicago O'Hare Intl
$392
Find similar

Scandinavian Airlines flights from Chicago to Brussels

Our best Scandinavian Airlines deals on Chicago to Brussels flight tickets
Scandinavian Airlines
Jan 30
ORD10:29 amChicago O'Hare Intl
16h 11m
2 stops
BRU9:40 amBrussels Bruxelles-National
Feb 8
BRU10:20 amBrussels Bruxelles-National
13h 35m
1 stop
ORD4:55 pmChicago O'Hare Intl
$419
Find similar
Scandinavian Airlines
Feb 16
ORD10:36 amChicago O'Hare Intl
20h 54m
2 stops
BRU2:30 pmBrussels Bruxelles-National
Feb 23
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$420
Find similar
Scandinavian Airlines
Jan 30
ORD10:29 amChicago O'Hare Intl
21h 01m
2 stops
BRU2:30 pmBrussels Bruxelles-National
Feb 8
BRU6:55 pmBrussels Bruxelles-National
28h 50m
2 stops
ORD4:45 pmChicago O'Hare Intl
$423
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 November 21, 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

Thu 2/19

6:30 pm-11:55 am

1 stop10h 25m

Brussels Bruxelles-National

Fri 2/27

12:50 pm-5:20 pm

1 stop11h 30m

$384

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 1/28

6:30 pm-11:55 am

1 stop10h 25m

Brussels Bruxelles-National

Fri 2/6

12:50 pm-5:20 pm

1 stop11h 30m

$392

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 2/16

10:36 am-2:30 pm

2 stops20h 54m

Brussels Bruxelles-National

Mon 2/23

10:20 am-4:45 pm

1 stop13h 25m

$419

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 2/16

10:36 am-2:30 pm

2 stops20h 54m

Brussels Bruxelles-National

Mon 2/23

10:20 am-4:45 pm

1 stop13h 25m

$420

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Mon 1/12

6:50 pm-9:35 pm

2 stops19h 45m

Charleroi Brussels

Tue 1/20

3:30 pm-1:10 pm

2 stops28h 40m

$581

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Fri 1/30

11:55 am-8:25 am

2 stops37h 30m

Charleroi Brussels

Sun 2/8

7:15 am-2:55 pm

1 stop14h 40m

$664

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Mon 1/12

1:28 pm-7:35 am

2 stops11h 07m

Brussels Bruxelles-National

Tue 1/20

10:45 am-5:55 pm

2 stops14h 10m

$785

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Mon 1/12

1:28 pm-10:10 am

2 stops13h 42m

Brussels Bruxelles-National

Tue 1/20

8:05 am-5:55 pm

2 stops16h 50m

$786

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Thu 2/19

1:28 pm-7:35 am

2 stops11h 07m

Brussels Bruxelles-National

Sat 2/28

8:05 am-4:16 pm

2 stops15h 11m

$885

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Thu 1/8

1:28 pm-7:35 am

2 stops11h 07m

Brussels Bruxelles-National

Thu 1/15

8:05 am-4:31 pm

2 stops15h 26m

$900

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 $573. If you are unable to visit Brussels during the month of April, then departing from Chicago during the month October is also very affordable. Most momondo users find prices during this month for around $600.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,106. 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 $1,400.

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 $1,208.

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 $764 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 $486 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)
Search flight deals

  • 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 25m.

  • 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
1,584 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $428Free CancellationRating
7.0
581 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $492Free CancellationRating
7.3
4,044 reviews
Search Turkish Airlines flights
Aer LingusPriceFrom $536Free CancellationRating
7.2
1,377 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $551Free CancellationRating
6.7
7,533 reviews
Search British Airways flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights
LufthansaPriceFrom $725Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $744Free CancellationRating
7.1
2,070 reviews
Search TAP AIR PORTUGAL 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