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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 11/23. 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

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Icelandair Logo
6:30 pm - 11:55 amORD-BRU
10h 25m1 stop
Icelandair Logo
12:50 pm - 6:20 pmBRU-ORD
11h 30m1 stop
$391Icelandair
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Thu, Mar 5 - Sun, Mar 8
Icelandair Logo
6:30 pm - 11:55 amORD-BRU
10h 25m1 stop
Icelandair Logo
12:50 pm - 5:20 pmBRU-ORD
11h 30m1 stop
$399Icelandair
Find Deal
Wed, Jan 28 - Fri, Feb 6
Scandinavian Airlines Logo
7:10 am - 9:40 amORD-BRU
19h 30m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$421Scandinavian Airlines
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Fri, Dec 5 - Fri, Dec 12
Scandinavian Airlines Logo
7:10 am - 9:40 amORD-BRU
19h 30m2 stops
Scandinavian Airlines Logo
3:10 pm - 4:45 pmBRU-ORD
32h 35m1 stop
$433Scandinavian Airlines
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Fri, Dec 5 - Fri, Dec 12
TAP AIR PORTUGAL Logo
8:15 pm - 11:50 pmORD-BRU
20h 35m1 stop
TAP AIR PORTUGAL Logo
6:00 am - 2:45 pmBRU-ORD
15h 45m1 stop
$457TAP AIR PORTUGAL
Find Deal
Fri, Nov 28 - Sun, Dec 7
TAP AIR PORTUGAL Logo
7:10 pm - 5:05 pmORD-BRU
14h 55m1 stop
TAP AIR PORTUGAL Logo
6:00 am - 3:00 pmBRU-ORD
16h 00m1 stop
$480TAP AIR PORTUGAL
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Wed, Feb 11 - Wed, Feb 18
Multiple Airlines Logo
12:50 pm - 3:55 pmORD-CRL
20h 05m3 stops
Multiple Airlines Logo
8:40 am - 6:25 pmCRL-ORD
16h 45m2 stops
$602Multiple Airlines
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Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
3:35 pm - 10:20 pmORD-CRL
23h 45m2 stops
Multiple Airlines Logo
6:20 am - 8:00 pmCRL-ORD
20h 40m2 stops
$603Multiple Airlines
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Sun, Nov 16 - Tue, Nov 25
Delta Logo
10:35 am - 8:00 amMDW-BRU
15h 25m1 stop
Delta Logo
10:45 am - 9:46 pmBRU-MDW
18h 01m1 stop
$757Delta
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Mon, Mar 16 - Tue, Apr 7
Delta Logo
1:28 pm - 7:35 amMDW-BRU
11h 07m2 stops
Delta Logo
8:05 am - 5:55 pmBRU-MDW
16h 50m2 stops
$785Delta
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Wed, Jan 28 - Fri, Feb 6

TAP AIR PORTUGAL flights from Chicago to Brussels

Our best TAP AIR PORTUGAL deals on Chicago to Brussels flight tickets
TAP AIR PORTUGAL
Nov 28
ORD8:15 pmChicago O'Hare Intl
20h 35m
1 stop
BRU11:50 pmBrussels Bruxelles-National
Dec 7
BRU6:00 amBrussels Bruxelles-National
15h 45m
1 stop
ORD2:45 pmChicago O'Hare Intl
$457
Find similar
TAP AIR PORTUGAL
Nov 12
ORD7:10 pmChicago O'Hare Intl
32h 50m
1 stop
BRU11:00 amBrussels Bruxelles-National
Nov 19
BRU6:00 amBrussels Bruxelles-National
16h 00m
1 stop
ORD3:00 pmChicago O'Hare Intl
$461
Find similar
TAP AIR PORTUGAL
Feb 11
ORD7:10 pmChicago O'Hare Intl
14h 55m
1 stop
BRU5:05 pmBrussels Bruxelles-National
Feb 18
BRU6:00 amBrussels Bruxelles-National
16h 00m
1 stop
ORD3:00 pmChicago O'Hare Intl
$480
Find similar

KLM flights from Chicago to Brussels

Our best KLM deals on Chicago to Brussels flight tickets
KLM
Feb 8
MDW1:28 pmChicago Midway
11h 07m
2 stops
BRU7:35 amBrussels Bruxelles-National
Feb 28
BRU8:05 amBrussels Bruxelles-National
15h 11m
2 stops
MDW4:16 pmChicago Midway
$867
Find similar
KLM
Mar 19
MDW5:25 pmChicago Midway
32h 35m
1 stop
BRU8:00 amBrussels Bruxelles-National
Apr 5
BRU6:10 amBrussels Bruxelles-National
17h 15m
2 stops
MDW4:25 pmChicago Midway
$1,015
Find similar
KLM
Dec 7
MDW10:49 amChicago Midway
15h 11m
2 stops
BRU9:00 amBrussels Bruxelles-National
Dec 16
BRU8:05 amBrussels Bruxelles-National
17h 13m
2 stops
MDW6:18 pmChicago Midway
$1,087
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 6, 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 3/5

6:30 pm-11:55 am

1 stop10h 25m

Brussels Bruxelles-National

Sun 3/8

12:50 pm-6:20 pm

1 stop11h 30m

$391

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

$399

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 12/5

7:10 am-9:40 am

2 stops19h 30m

Brussels Bruxelles-National

Fri 12/12

10:20 am-4:45 pm

1 stop13h 25m

$421

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 12/5

7:10 am-9:40 am

2 stops19h 30m

Brussels Bruxelles-National

Fri 12/12

3:10 pm-4:45 pm

1 stop32h 35m

$433

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 11/28

8:15 pm-11:50 pm

1 stop20h 35m

Brussels Bruxelles-National

Sun 12/7

6:00 am-2:45 pm

1 stop15h 45m

$457

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 2/11

7:10 pm-5:05 pm

1 stop14h 55m

Brussels Bruxelles-National

Wed 2/18

6:00 am-3:00 pm

1 stop16h 00m

$480

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Tue 12/2

12:50 pm-3:55 pm

3 stops20h 05m

Charleroi Brussels

Tue 12/9

8:40 am-6:25 pm

2 stops16h 45m

$602

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Sun 11/16

3:35 pm-10:20 pm

2 stops23h 45m

Charleroi Brussels

Tue 11/25

6:20 am-8:00 pm

2 stops20h 40m

$603

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Mon 3/16

10:35 am-8:00 am

1 stop15h 25m

Brussels Bruxelles-National

Tue 4/7

10:45 am-9:46 pm

1 stop18h 01m

$757

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Wed 1/28

1:28 pm-7:35 am

2 stops11h 07m

Brussels Bruxelles-National

Fri 2/6

8:05 am-5:55 pm

2 stops16h 50m

$785

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 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 $779 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 $616 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 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
1,561 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $428Free CancellationRating
7.1
571 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $492Free CancellationRating
7.3
4,031 reviews
Search Turkish Airlines flights
Aer LingusPriceFrom $536Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $551Free CancellationRating
6.7
7,500 reviews
Search British Airways flights
United AirlinesPriceFrom $639Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights
LufthansaPriceFrom $725Free CancellationRating
6.8
7,555 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $744Free CancellationRating
7.1
2,046 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