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Cheap flights from Chicago to Brussels from $268

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 12/3. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
10:24 am - 9:40 amORD-BRU
16h 16m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$411Scandinavian Airlines
Find Deal
Fri, Jan 30 - Mon, Feb 9
Scandinavian Airlines Logo
10:24 am - 9:40 amORD-BRU
16h 16m2 stops
Scandinavian Airlines Logo
7:45 pm - 4:45 pmBRU-ORD
28h 00m2 stops
$417Scandinavian Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 8
Scandinavian Airlines Logo
7:10 am - 9:40 amORD-BRU
19h 30m2 stops
Scandinavian Airlines Logo
7:45 pm - 4:45 pmBRU-ORD
28h 00m2 stops
$418Scandinavian Airlines
Find Deal
Sun, Dec 7 - Sun, Dec 14
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
$445TAP 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 - 2:45 pmBRU-ORD
15h 45m1 stop
$456TAP AIR PORTUGAL
Find Deal
Wed, Dec 3 - Sun, Jan 18
Aer Lingus Logo
3:50 pm - 9:35 amORD-BRU
10h 45m1 stop
Aer Lingus Logo
10:15 am - 5:55 pmBRU-ORD
14h 40m1 stop
$536Aer Lingus
Find Deal
Tue, Nov 25 - Tue, Dec 2
Delta Logo
1:05 pm - 8:00 amMDW-BRU
12h 55m1 stop
Delta Logo
10:45 am - 9:46 pmBRU-MDW
18h 01m1 stop
$766Delta
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Sun, Mar 15 - Tue, Mar 31
Delta Logo
1:05 pm - 8:00 amMDW-BRU
12h 55m1 stop
Delta Logo
10:45 am - 8:50 amBRU-MDW
29h 05m2 stops
$771Delta
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Sun, Mar 15 - Tue, Mar 31
Multiple Airlines Logo
1:45 pm - 11:55 amMDW-BRU
15h 10m2 stops
Multiple Airlines Logo
12:50 pm - 11:30 pmBRU-MDW
17h 40m2 stops
$1,092Multiple Airlines
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Wed, Dec 3 - Sun, Dec 7
Multiple Airlines Logo
4:50 pm - 11:55 amMDW-BRU
13h 05m2 stops
Multiple Airlines Logo
1:50 pm - 11:35 pmBRU-MDW
16h 45m2 stops
$1,880Multiple Airlines
Find Deal
Sat, Mar 14 - Mon, Mar 30

Scandinavian Airlines flights from Chicago to Brussels Bruxelles-National Airport

Our best Scandinavian Airlines deals on Chicago to Brussels Bruxelles-National Airport flight tickets
Scandinavian Airlines
Jan 30
ORD10:24 amChicago O'Hare Intl
16h 16m
2 stops
BRU9:40 amBrussels Bruxelles-National
Feb 9
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$411
Find similar
Scandinavian Airlines
Jan 30
ORD10:24 amChicago O'Hare Intl
16h 16m
2 stops
BRU9:40 amBrussels Bruxelles-National
Feb 8
BRU7:45 pmBrussels Bruxelles-National
28h 00m
2 stops
ORD4:45 pmChicago O'Hare Intl
$417
Find similar
Scandinavian Airlines
Dec 7
ORD7:10 amChicago O'Hare Intl
19h 30m
2 stops
BRU9:40 amBrussels Bruxelles-National
Dec 14
BRU7:45 pmBrussels Bruxelles-National
28h 00m
2 stops
ORD4:45 pmChicago O'Hare Intl
$418
Find similar

Aer Lingus flights from Chicago to Brussels Bruxelles-National Airport

Our best Aer Lingus deals on Chicago to Brussels Bruxelles-National Airport flight tickets
Aer Lingus
Nov 25
ORD3:50 pmChicago O'Hare Intl
10h 45m
1 stop
BRU9:35 amBrussels Bruxelles-National
Dec 2
BRU10:15 amBrussels Bruxelles-National
14h 40m
1 stop
ORD5:55 pmChicago O'Hare Intl
$536
Find similar
Aer Lingus
Nov 9
ORD3:50 pmChicago O'Hare Intl
10h 45m
1 stop
BRU9:35 amBrussels Bruxelles-National
Nov 12
BRU10:15 amBrussels Bruxelles-National
14h 40m
1 stop
ORD5:55 pmChicago O'Hare Intl
$568
Find similar
Aer Lingus
Nov 6
ORD3:50 pmChicago O'Hare Intl
10h 45m
1 stop
BRU9:35 amBrussels Bruxelles-National
Nov 13
BRU10:15 amBrussels Bruxelles-National
14h 40m
1 stop
ORD5:55 pmChicago O'Hare Intl
$570
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 October 31, 2025.
Use the filters below to find and compare flights from Chicago 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

Fri 1/30

10:24 am-9:40 am

2 stops16h 16m

Brussels Bruxelles-National

Mon 2/9

10:20 am-4:45 pm

1 stop13h 25m

$411

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 1/30

10:24 am-9:40 am

2 stops16h 16m

Brussels Bruxelles-National

Sun 2/8

7:45 pm-4:45 pm

2 stops28h 00m

$417

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 12/7

7:10 am-9:40 am

2 stops19h 30m

Brussels Bruxelles-National

Sun 12/14

7:45 pm-4:45 pm

2 stops28h 00m

$418

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

$445

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 12/3

7:10 pm-5:05 pm

1 stop14h 55m

Brussels Bruxelles-National

Sun 1/18

6:00 am-2:45 pm

1 stop15h 45m

$456

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/25

3:50 pm-9:35 am

1 stop10h 45m

Brussels Bruxelles-National

Tue 12/2

10:15 am-5:55 pm

1 stop14h 40m

$536

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sun 3/15

1:05 pm-8:00 am

1 stop12h 55m

Brussels Bruxelles-National

Tue 3/31

10:45 am-9:46 pm

1 stop18h 01m

$766

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sun 3/15

1:05 pm-8:00 am

1 stop12h 55m

Brussels Bruxelles-National

Tue 3/31

10:45 am-8:50 am

2 stops29h 05m

$771

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Wed 12/3

1:45 pm-11:55 am

2 stops15h 10m

Brussels Bruxelles-National

Sun 12/7

12:50 pm-11:30 pm

2 stops17h 40m

$1,092

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sat 3/14

4:50 pm-11:55 am

2 stops13h 05m

Brussels Bruxelles-National

Mon 3/30

1:50 pm-11:35 pm

2 stops16h 45m

$1,880

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

What is the cheapest month to fly to Brussels Bruxelles-National Airport?

The cheapest month to fly to Brussels Bruxelles-National Airport from Chicago is in April. Flight prices, which tend to average around $579, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Brussels Bruxelles-National Airport from Chicago during February instead. Flights to Brussels Bruxelles-National Airport in February, while not as cheap as those in April, still average around $597.

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

The cheapest day to depart from Chicago 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 $1,098. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Brussels Bruxelles-National Airport for around $1,411.

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

Our most recent data shows that the best time of day to fly to Brussels Bruxelles-National Airport is in the evening. Flights from Chicago to Brussels Bruxelles-National Airport during this time can be as low as $579. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,202 on average. Flights to Brussels Bruxelles-National Airport from Chicago in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Chicago to Brussels Bruxelles-National flight route?

Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Chicago - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $795 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 for as low as $616 on momondo.

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

There are 3 cabin classes available to choose from on Chicago 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 to Brussels Bruxelles-National Airport flight prices changed over time?

As of October 2025, prices for Chicago to Brussels Bruxelles-National Airport flights are approximately 133% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to Brussels Bruxelles-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago 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 to Brussels Bruxelles-National Airport (CHI to BRU) flight deals and tips

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

Best Price Found

$805

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Brussels Bruxelles-National Airport from Chicago in the past 72 hours is $805. The best round-trip flight deal from Chicago to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $981.
The fastest flight from Chicago to Brussels Bruxelles-National Airport takes 8h 00m
Direct flights go from Chicago to Brussels Bruxelles-National Airport every day.
Search flight deals

  • How far is Chicago to Brussels Bruxelles-National by plane?

    There are 4139.4 mi between Chicago and Brussels Bruxelles-National. Flights usually cover this in 10h 45m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Chicago to Brussels Bruxelles-National Airport are updated daily.

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

  • How old do you have to be to fly from Chicago to Brussels Bruxelles-National Airport?

    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 Bruxelles-National Airport.

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

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

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

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

Best airlines flying from Chicago to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Chicago to Brussels Bruxelles-National Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $310Free CancellationRating
7.4
1,550 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $428Free CancellationRating
7.1
562 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $492Free CancellationRating
7.3
4,033 reviews
Search Turkish Airlines flights
Aer LingusPriceFrom $536Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $551Free CancellationRating
6.7
7,489 reviews
Search British Airways flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
8,995 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $744Free CancellationRating
7.1
2,041 reviews
Search TAP AIR PORTUGAL flights
LufthansaPriceFrom $754Free CancellationRating
6.8
7,543 reviews
Search Lufthansa flights

  • United Airlines Flights From Chicago to Brussels Bruxelles-National Airport

    United Airlines flies from Chicago to Brussels Bruxelles-National Airport around 4 times per week, with 8,995 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Chicago to Brussels Bruxelles-National Airport in the last 72 hours was $590 (round-trip), much lower than the average airfare cost of $1,035 for United Airlines flights on this route.

  • Lufthansa Flights From Chicago to Brussels Bruxelles-National Airport

    Lufthansa is also a popular choice for this route. Lufthansa flight deals for Chicago to Brussels Bruxelles-National Airport start from as low as $754 round-trip, depending on your selected dates, with average Lufthansa deals seen on momondo around $1,641. Lufthansa operates 4 flights to Brussels Bruxelles-National Airport from Chicago in an average week. Users have rated it 6.8/10 across 7,543 reviews.

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
Mons
Genk
Waterloo
Durbuy
Mechelen
Francorchamps
Knokke-Heist
Aalst
Tournai
Oostkamp
Halle

Why use momondo?

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

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

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

Flights from Chicago to Brussels with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Chicago to Brussels flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Brussels from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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