Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Brussels departing on 3/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago O'Hare Intl Airport to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:10 pm - 10:50 am
ORD
-
BRU
32h 40m2 stops
Scandinavian Airlines Logo
11:30 am - 4:45 pm
BRU
-
ORD
36h 15m2 stops
$459Scandinavian Airlines
Sun, Feb 15 - Tue, Feb 24
Scandinavian Airlines Logo
8:20 pm - 10:50 am
ORD
-
BRU
32h 30m2 stops
Scandinavian Airlines Logo
10:20 am - 5:45 pm
BRU
-
ORD
13h 25m1 stop
$460Scandinavian Airlines
Mon, Mar 16 - Mon, Mar 23
Scandinavian Airlines Logo
7:10 pm - 10:50 am
ORD
-
BRU
32h 40m2 stops
Scandinavian Airlines Logo
11:30 am - 4:45 pm
BRU
-
ORD
36h 15m2 stops
$461Scandinavian Airlines
Sun, Feb 15 - Tue, Feb 24
Scandinavian Airlines Logo
7:20 pm - 10:50 am
ORD
-
BRU
32h 30m2 stops
Scandinavian Airlines Logo
11:30 am - 4:45 pm
BRU
-
ORD
36h 15m2 stops
$464Scandinavian Airlines
Mon, Jan 19 - Wed, Feb 25
Scandinavian Airlines Logo
7:15 pm - 2:35 pm
ORD
-
BRU
12h 20m1 stop
Scandinavian Airlines Logo
9:20 pm - 4:10 pm
BRU
-
ORD
25h 50m2 stops
$465Scandinavian Airlines
Wed, Apr 15 - Sun, Apr 26
Scandinavian Airlines Logo
7:20 pm - 10:50 am
ORD
-
BRU
32h 30m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pm
BRU
-
ORD
13h 25m1 stop
$466Scandinavian Airlines
Mon, Jan 26 - Mon, Feb 2
Scandinavian Airlines Logo
7:20 pm - 7:50 pm
ORD
-
BRU
17h 30m1 stop
Scandinavian Airlines Logo
10:20 am - 4:45 pm
BRU
-
ORD
13h 25m1 stop
$468Scandinavian Airlines
Wed, Jan 28 - Fri, Feb 6
Scandinavian Airlines Logo
7:20 pm - 10:50 am
ORD
-
BRU
32h 30m2 stops
Scandinavian Airlines Logo
7:20 pm - 4:45 pm
BRU
-
ORD
28h 25m2 stops
$469Scandinavian Airlines
Mon, Feb 16 - Tue, Feb 24
Scandinavian Airlines Logo
7:15 pm - 2:35 pm
ORD
-
BRU
12h 20m1 stop
Scandinavian Airlines Logo
3:15 pm - 4:10 pm
BRU
-
ORD
31h 55m1 stop
$471Scandinavian Airlines
Wed, Apr 15 - Sun, Apr 26
Scandinavian Airlines Logo
7:20 pm - 9:40 am
ORD
-
BRU
31h 20m1 stop
Scandinavian Airlines Logo
8:30 pm - 5:45 pm
BRU
-
ORD
27h 15m1 stop
$472Scandinavian Airlines
Fri, Feb 20 - Sun, Mar 8

Scandinavian Airlines flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport flight tickets
Scandinavian Airlines
Jan 14
ORD7:20 pmChicago O'Hare Intl
12h 10m
1 stop
BRU2:30 pmBrussels Bruxelles-National
Jan 18
BRU10:20 amBrussels Bruxelles-National
13h 35m
1 stop
ORD4:55 pmChicago O'Hare Intl
$459
Find similar
Scandinavian Airlines
Mar 16
ORD8:20 pmChicago O'Hare Intl
32h 30m
2 stops
BRU10:50 amBrussels Bruxelles-National
Mar 23
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD5:45 pmChicago O'Hare Intl
$460
Find similar
Scandinavian Airlines
Jan 14
ORD7:20 pmChicago O'Hare Intl
32h 30m
2 stops
BRU10:50 amBrussels Bruxelles-National
Jan 18
BRU10:20 amBrussels Bruxelles-National
13h 35m
1 stop
ORD4:55 pmChicago O'Hare Intl
$462
Find similar

Lufthansa flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport flight tickets
Lufthansa
Jan 9
ORD5:55 pmChicago O'Hare Intl
8h 00m
BRU8:55 amBrussels Bruxelles-National
Jan 18
BRU10:10 amBrussels Bruxelles-National
9h 00m
ORD12:10 pmChicago O'Hare Intl
$1,544
Find similar
Lufthansa
Jan 11
ORD5:55 pmChicago O'Hare Intl
8h 00m
BRU8:55 amBrussels Bruxelles-National
Jan 17
BRU10:10 amBrussels Bruxelles-National
9h 00m
ORD12:10 pmChicago O'Hare Intl
$1,627
Find similar
Lufthansa
Jan 1
ORD5:55 pmChicago O'Hare Intl
8h 00m
BRU8:55 amBrussels Bruxelles-National
Jan 16
BRU10:10 amBrussels Bruxelles-National
9h 00m
ORD12:10 pmChicago O'Hare Intl
$1,848
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 December 30, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 2/15

7:10 pm-10:50 am

2 stops32h 40m

Brussels Bruxelles-National

Tue 2/24

11:30 am-4:45 pm

2 stops36h 15m

$459

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 3/16

8:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Mon 3/23

10:20 am-5:45 pm

1 stop13h 25m

$460

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 2/15

7:10 pm-10:50 am

2 stops32h 40m

Brussels Bruxelles-National

Tue 2/24

11:30 am-4:45 pm

2 stops36h 15m

$461

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 1/19

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Wed 2/25

11:30 am-4:45 pm

2 stops36h 15m

$464

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/15

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Sun 4/26

9:20 pm-4:10 pm

2 stops25h 50m

$465

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 1/26

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Mon 2/2

10:20 am-4:45 pm

1 stop13h 25m

$466

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 1/28

7:20 pm-7:50 pm

1 stop17h 30m

Brussels Bruxelles-National

Fri 2/6

10:20 am-4:45 pm

1 stop13h 25m

$468

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 2/16

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Tue 2/24

7:20 pm-4:45 pm

2 stops28h 25m

$469

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/15

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Sun 4/26

3:15 pm-4:10 pm

1 stop31h 55m

$471

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 2/20

7:20 pm-9:40 am

1 stop31h 20m

Brussels Bruxelles-National

Sun 3/8

8:30 pm-5:45 pm

1 stop27h 15m

$472

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Brussels from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport is in September. Flight prices, which tend to average around $515, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Brussels Bruxelles-National Airport from Chicago O'Hare Intl Airport during October instead. Flights to Brussels Bruxelles-National Airport in October, while not as cheap as those in September, still average around $529.

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

The cheapest day to depart from Chicago O'Hare Intl Airport 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 $1,082. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport for around $1,361.

What is the cheapest Chicago O'Hare Intl to Brussels Bruxelles-National flight route?

Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Chicago O'Hare Intl - 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 Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $773 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 Chicago O'Hare Intl Airport for as low as $486 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Brussels Bruxelles-National flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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.

How have Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport flight prices changed over time?

As of December 2025, prices for Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport (ORD to BRU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

Best Price Found

$723

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Brussels Bruxelles-National Airport from Chicago O'Hare Intl Airport in the past 72 hours is $723. The best round-trip flight deal from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $1,029.
The fastest flight from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport takes 8h 00m
Direct flights go from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport every day.
Search flight deals

  • How far is Chicago O'Hare Intl to Brussels Bruxelles-National by plane?

    Chicago O'Hare Intl and Brussels Bruxelles-National are 4144.8 mi apart from one another. Flights usually cover this in 8h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport.

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

    The required travel and health documents for your Brussels Bruxelles-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Brussels Bruxelles-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport?

  • What is the most popular airline from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport?

Best airlines flying from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $298Free CancellationRating
7.4
1,632 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $428Free CancellationRating
7.0
592 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $445Free CancellationRating
7.2
2,098 reviews
Search TAP AIR PORTUGAL flights
Turkish AirlinesPriceFrom $492Free CancellationRating
7.3
4,131 reviews
Search Turkish Airlines flights
Aer LingusPriceFrom $531Free CancellationRating
7.2
1,415 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $551Free CancellationRating
6.7
7,625 reviews
Search British Airways flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
9,122 reviews
Search United Airlines flights
Brussels AirlinesPriceFrom $986Free CancellationRating
7.2
377 reviews
Search Brussels Airlines flights

  • United Airlines Flights From Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

    United Airlines flight deals from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport start from $590 round-trip. Over the 7 United Airlines flights for this route in a normal week, average airfare is usually $1,037 round-trip - but some users have found much cheaper deals with momondo.

  • Brussels Airlines Flights From Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport

    Another popular option for Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport flights is Brussels Airlines (7.2/10, 377 ratings). Brussels Airlines flies from Chicago O'Hare Intl Airport to Brussels Bruxelles-National Airport around 7 times per week, with deals starting from $986 round-trip and rising to an average price of around $1,763.

Traveling to a place near Brussels?

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

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?

momondo provides multiple filters to help you find the best flight to Brussels from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago 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 Chicago and alert you when they change.

An easier way to manage your Brussels Bruxelles-National Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 1/29
Thu 2/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brussels

Popular cities in Belgium

Popular flights according to clicks in the last 7 days on momondo
Flights to Charleroi Brussels Airportfrom $415