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Cheap flights from Chicago O'Hare Intl Airport to Brussels from $243

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 10/12. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Brussels

Cheap round-trip flights

Scandinavian Airlines Logo
7:00 am - 7:50 pmORD-BRU
29h 50m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$412Scandinavian Airlines
Find Deal
Tue, Nov 18 - Thu, Nov 27
Scandinavian Airlines Logo
10:40 am - 9:40 amORD-BRU
16h 00m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$428Scandinavian Airlines
Find Deal
Wed, Jan 28 - Fri, Feb 6
Scandinavian Airlines Logo
10:35 am - 2:30 pmORD-BRU
20h 55m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmBRU-ORD
13h 25m1 stop
$440Scandinavian Airlines
Find Deal
Tue, Nov 18 - Thu, Nov 27
Scandinavian Airlines Logo
10:35 am - 2:30 pmORD-BRU
20h 55m2 stops
Scandinavian Airlines Logo
7:45 pm - 4:45 pmBRU-ORD
28h 00m2 stops
$441Scandinavian Airlines
Find Deal
Tue, Nov 18 - Sun, Nov 23
Scandinavian Airlines Logo
7:20 pm - 10:50 amORD-BRU
32h 30m2 stops
Scandinavian Airlines Logo
7:45 pm - 5:45 pmBRU-ORD
28h 00m2 stops
$446Scandinavian Airlines
Find Deal
Mon, Feb 16 - Sun, Mar 8
Scandinavian Airlines Logo
7:20 pm - 2:30 pmORD-BRU
12h 10m1 stop
Scandinavian Airlines Logo
7:20 pm - 4:45 pmBRU-ORD
28h 25m2 stops
$449Scandinavian Airlines
Find Deal
Wed, Nov 5 - Tue, Dec 9
Scandinavian Airlines Logo
10:35 am - 2:30 pmORD-BRU
20h 55m2 stops
Scandinavian Airlines Logo
3:10 pm - 4:45 pmBRU-ORD
32h 35m1 stop
$450Scandinavian Airlines
Find Deal
Tue, Nov 18 - Wed, Dec 3
Scandinavian Airlines Logo
8:20 pm - 6:35 pmORD-BRU
16h 15m1 stop
Scandinavian Airlines Logo
10:20 am - 5:45 pmBRU-ORD
13h 25m1 stop
$452Scandinavian Airlines
Find Deal
Thu, Mar 12 - Wed, Mar 18
TAP AIR PORTUGAL Logo
8:25 pm - 11:50 pmORD-BRU
20h 25m1 stop
TAP AIR PORTUGAL Logo
5:55 pm - 3:00 pmBRU-ORD
28h 05m1 stop
$476TAP AIR PORTUGAL
Find Deal
Sun, Dec 14 - Tue, Dec 23
Multiple Airlines Logo
3:35 pm - 9:00 pmORD-CRL
22h 25m2 stops
Multiple Airlines Logo
6:20 am - 8:00 pmCRL-ORD
20h 40m2 stops
$537Multiple Airlines
Find Deal
Mon, Nov 3 - Tue, Nov 11

TAP AIR PORTUGAL flights from Chicago O'Hare Intl Airport to Brussels

Our best TAP AIR PORTUGAL deals on Chicago O'Hare Intl Airport to Brussels flight tickets
TAP AIR PORTUGAL
Dec 14
ORD8:25 pmChicago O'Hare Intl
20h 25m
1 stop
BRU11:50 pmBrussels Bruxelles-National
Dec 23
BRU5:55 pmBrussels Bruxelles-National
28h 05m
1 stop
ORD3:00 pmChicago O'Hare Intl
$476
Find similar
TAP AIR PORTUGAL
Sep 22
ORD6:10 pmChicago O'Hare Intl
13h 55m
1 stop
BRU3:05 pmBrussels Bruxelles-National
Sep 24
BRU8:55 pmBrussels Bruxelles-National
22h 40m
1 stop
ORD12:35 pmChicago O'Hare Intl
$881
Find similar

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

Our best Scandinavian Airlines deals on Chicago O'Hare Intl Airport to Brussels flight tickets
Scandinavian Airlines
Nov 18
ORD7:00 amChicago O'Hare Intl
29h 50m
2 stops
BRU7:50 pmBrussels Bruxelles-National
Nov 27
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$412
Find similar
Scandinavian Airlines
Jan 28
ORD10:40 amChicago O'Hare Intl
16h 00m
2 stops
BRU9:40 amBrussels Bruxelles-National
Feb 6
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$428
Find similar
Scandinavian Airlines
Nov 18
ORD10:35 amChicago O'Hare Intl
20h 55m
2 stops
BRU2:30 pmBrussels Bruxelles-National
Nov 27
BRU10:20 amBrussels Bruxelles-National
13h 25m
1 stop
ORD4:45 pmChicago O'Hare Intl
$440
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 September 16, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/18

7:00 am-7:50 pm

2 stops29h 50m

Brussels Bruxelles-National

Thu 11/27

10:20 am-4:45 pm

1 stop13h 25m

$412

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 1/28

10:40 am-9:40 am

2 stops16h 00m

Brussels Bruxelles-National

Fri 2/6

10:20 am-4:45 pm

1 stop13h 25m

$428

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/18

10:35 am-2:30 pm

2 stops20h 55m

Brussels Bruxelles-National

Thu 11/27

10:20 am-4:45 pm

1 stop13h 25m

$440

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/18

10:35 am-2:30 pm

2 stops20h 55m

Brussels Bruxelles-National

Sun 11/23

7:45 pm-4:45 pm

2 stops28h 00m

$441

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 2/16

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Sun 3/8

7:45 pm-5:45 pm

2 stops28h 00m

$446

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 11/5

7:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Tue 12/9

7:20 pm-4:45 pm

2 stops28h 25m

$449

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/18

10:35 am-2:30 pm

2 stops20h 55m

Brussels Bruxelles-National

Wed 12/3

3:10 pm-4:45 pm

1 stop32h 35m

$450

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 3/12

8:20 pm-6:35 pm

1 stop16h 15m

Brussels Bruxelles-National

Wed 3/18

10:20 am-5:45 pm

1 stop13h 25m

$452

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 12/14

8:25 pm-11:50 pm

1 stop20h 25m

Brussels Bruxelles-National

Tue 12/23

5:55 pm-3:00 pm

1 stop28h 05m

$476

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Mon 11/3

3:35 pm-9:00 pm

2 stops22h 25m

Charleroi Brussels

Tue 11/11

6:20 am-8:00 pm

2 stops20h 40m

$537

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 O'Hare Intl Airport 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 cheapest month to fly to Brussels?

In general, September is the cheapest month to fly from Chicago O'Hare Intl Airport to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $519. If you are unable to visit Brussels during the month of September, then departing from Chicago O'Hare Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $634.

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

On average, the least expensive day to fly to Brussels from Chicago O'Hare Intl Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,098. 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 O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,378.

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 O'Hare Intl Airport 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 $1,186.

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

Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around $780 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from Chicago O'Hare Intl Airport for as low as $614 on momondo.

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

There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl Airport to Brussels flight deals and tips

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

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Brussels

1 airport
The fastest flight from Chicago O'Hare Intl Airport to Brussels takes 8h 00m
Direct flights go from Chicago O'Hare Intl Airport to Brussels every day.
There is 1 airport near Brussels: Brussels Bruxelles-National (BRU)
Search flight deals

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

    The straight-line distance from Chicago O'Hare Intl to Brussels is 4141.6 mi. By plane, this route typically takes 11h 55m.

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

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

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

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Brussels?

    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.

  • What documentation or ID do you need to fly to Brussels?

    The required travel and health documents for your Brussels 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Brussels with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $312Free CancellationRating
7.4
1,486 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $405Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Turkish AirlinesPriceFrom $492Free CancellationRating
7.3
3,968 reviews
Search Turkish Airlines flights
KLMPriceFrom $506Free CancellationRating
7.8
1,386 reviews
Search KLM flights
Aer LingusPriceFrom $536Free CancellationRating
7.2
1,274 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $551Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
LufthansaPriceFrom $728Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $744Free CancellationRating
7.1
1,975 reviews
Search TAP AIR PORTUGAL flights

Why use momondo?

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

It is quick and easy to find Chicago to Brussels flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Brussels that suits you.

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

Yes. All flights to Brussels from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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 can track prices for Chicago to Brussels flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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