HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Brussels

$239+ Cheap flights from Chicago (CHI) to Brussels

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BRU
feb. 6 — feb. 131
vie. 2/6
vie. 2/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Brussels with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Chicago to Brussels are usually found in September or October, booked 38 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Chicago to Brussels

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Brussels (BR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 7, 2026.

Round-trip from

$441
(CrystalTravel)

One-way from

$239
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$612
From Chicago (CHI) to Brussels
Search Deals
One-way flight from Chicago (CHI) to Brussels
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($360 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Chicago to Brussels

Cheapest flights from Chicago to Brussels
Explore the most affordable flight options available from Chicago to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 7, 2026.

This CrystalTravel deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/57:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
jue. 2/1210:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 1/6$441
This CrystalTravel deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/267:20 pmORD - BRU
1 stop16h 15mScandinavian Airlines
dom. 3/110:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 1/5$442
This CrystalTravel deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/217:15 pmORD - BRU
1 stop16h 15mScandinavian Airlines
mié. 10/287:20 pmBRU - ORD
2 stops28h 25mScandinavian Airlines
Deal found 1/5$448
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/47:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
mié. 2/1110:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 1/7$452
This CrystalTravel deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/47:20 pmORD - BRU
1 stop16h 15mScandinavian Airlines
mar. 3/107:20 pmBRU - ORD
2 stops28h 25mScandinavian Airlines
Deal found 1/6$454
This FlightHub deal was found by Cheapflights users on 1/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/88:20 pmORD - BRU
2 stops32h 30mScandinavian Airlines
mié. 3/1811:30 amBRU - ORD
2 stops36h 15mScandinavian Airlines
Deal found 1/4$455
This FlightHub deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/17:10 pmORD - BRU
2 stops32h 40mScandinavian Airlines
jue. 2/510:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 1/5$457
This FlightHub deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/207:15 pmORD - BRU
1 stop12h 20mScandinavian Airlines
mar. 10/278:30 pmBRU - ORD
1 stop27h 15mScandinavian Airlines
Deal found 1/5$458
This Mytrip deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/16:30 pmORD - CRL
2 stops20h 50mMultiple Airlines
mar. 3/106:20 amCRL - ORD
2 stops18h 00mMultiple Airlines
Deal found 1/6$472
This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/254:50 pmORD - CRL
1 stop16h 55mMultiple Airlines
mar. 3/319:00 pmCRL - ORD
2 stops27h 50mMultiple Airlines
Deal found 1/6$589
This Kiwi.com deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/13:50 pmORD - CRL
1 stop13h 55mMultiple Airlines
mar. 3/319:00 pmCRL - ORD
2 stops27h 50mMultiple Airlines
Deal found 1/5$599
This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/258:40 pmORD - CRL
1 stop13h 05mMultiple Airlines
mié. 4/19:45 pmCRL - ORD
2 stops27h 05mMultiple Airlines
Deal found 1/6$603

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated enero 7, 2026.
Use the filters below to find and compare flights from Chicago to Brussels that are best for you.

Fly from

Chicago

Fly to

Brussels

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

mié. 2/4

7:20 pm-9:40 am

1 stop31h 20m

Brussels Bruxelles-National

mié. 2/11

11:30 am-4:45 pm

2 stops36h 15m

$456

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

mié. 2/4

7:20 pm-6:40 pm

2 stops16h 20m

Brussels Bruxelles-National

dom. 2/8

7:45 pm-4:45 pm

2 stops28h 00m

$471

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

dom. 3/1

6:30 pm-10:20 pm

2 stops20h 50m

Charleroi Brussels

mar. 3/10

6:20 am-6:20 pm

2 stops18h 00m

$472

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

lun. 3/9

8:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

jue. 3/19

10:20 am-5:45 pm

1 stop13h 25m

$491

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

dom. 1/25

7:10 pm-7:50 pm

1 stop17h 40m

Brussels Bruxelles-National

jue. 1/29

8:30 pm-4:55 pm

1 stop27h 25m

$501

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

mar. 3/10

1:37 pm-2:30 pm

2 stops18h 53m

Brussels Bruxelles-National

jue. 3/19

10:20 am-5:45 pm

1 stop13h 25m

$546

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

jue. 2/19

7:00 am-9:40 am

2 stops19h 40m

Brussels Bruxelles-National

jue. 2/26

7:20 pm-4:45 pm

2 stops28h 25m

$566

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

jue. 3/12

7:35 pm-9:40 am

2 stops32h 05m

Brussels Bruxelles-National

mié. 3/18

10:20 am-5:45 pm

1 stop13h 25m

$588

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

dom. 3/1

3:50 pm-12:45 pm

1 stop13h 55m

Charleroi Brussels

mar. 3/31

9:00 pm-5:50 pm

2 stops27h 50m

$599

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

jue. 4/2

10:40 am-9:40 am

2 stops16h 00m

Brussels Bruxelles-National

lun. 4/13

9:10 pm-9:56 pm

2 stops31h 46m

$607

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 53 results
1
2
3
...
6

Best time to book a flight from Chicago to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Brussels

How far ahead should I book a flight from Chicago to Brussels?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Brussels. Price data was last updated on January 2, 2026.

Booking 38 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Brussels. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago to Brussels?

Currently, September is the cheapest month in which you can book a flight from Chicago to Brussels (average of $293). Flying from Chicago to Brussels in April is currently the most expensive (average of $539). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to BRU?

Find hourly flight availability from Chicago to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 7, 2026.

When flying from Chicago to Brussels, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Chicago to Brussels

Explore weekly flight availability from Chicago to Brussels. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated enero 7, 2026.

The most flights from CHI to BR1 are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Chicago to Brussels?

Reviews of airlines servicing Brussels

Get insights into the airlines that provide service to Brussels. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brussels. Reviews last updated enero 7, 2026.
Read reviews from past customers who have flown United Airlines, Turkish Airlines, and Scandinavian Airlines from Chicago to Brussels. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,139 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Turkish Airlines
7.3
Good
4,150 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Scandinavian Airlines
7.3
Good
1,635 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Aer Lingus
7.2
Good
1,427 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Icelandair
7.1
Good
593 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Brussels. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Brussels?

    Departing from Chicago to Brussels will take you 13h 13m. Chicago and Brussels are separated by a distance of 4148 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Chicago to Brussels round-trip?

    According to our current data, Scandinavian Airlines ($298), Icelandair ($428), and TAP AIR PORTUGAL ($445) offers the cheapest pricing from Chicago to Brussels. You may be able to fly from Chicago to Brussels for 63% less than the average price by searching for these airlines.

  • What are the most popular routes from Chicago to Brussels?

    When deciding which route to take from Chicago to Brussels consider Chicago O'Hare Intl - Brussels Bruxelles-National, Chicago Midway - Brussels Bruxelles-National or Chicago O'Hare Intl - Charleroi Brussels as they are the most popular.

  • What are the most reliable airlines from Chicago to Brussels?

    Consider Air Canada (27%), Austrian Airlines (27%) or Brussels Airlines (27%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Brussels.

  • What are the cheapest flights from Chicago to Brussels?

    Looking for the cheapest flight from Chicago to Brussels? While on average our users pay $1,037, our data indicates the cheapest price to be $457. The most popular route (Chicago O'Hare Intl - Brussels Bruxelles-National), is priced around $452.

  • Can I find deals for flights from Chicago to Brussels that include hotel bookings?

    Yes. In addition to deals on Chicago to Brussels flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Brussels?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Brussels.

  • Can I find deals for business class flights from Chicago to Brussels?

    Yes. Cheapflights offers flight deals from Chicago to Brussels by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Brussels?

    Currently, September is the cheapest month in which you can book a flight from Chicago to Brussels (average of $293). Flying from Chicago to Brussels in April is currently the most expensive (average of $539). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 8 airlines flying from Chicago to Brussels

Discover the top 8 airlines that operate flights from Chicago to Brussels. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$298Average$486FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$428Average$607FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$445Average$463FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$492Average$793FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$531Average$677FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$590Average$1,045FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$752Average$1,745FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.