HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Brussels

Cheap flights from Chicago (CHI) to Brussels

CHI — BRU
Nov 12 — Nov 191
Thu 11/12
Thu 11/19
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 February or November, booked 41 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Find flight deals from Chicago to Brussels

Popular in

June

Cheapest in

February

Average price

$762
Highest demand for flights based on searches. 31% potential increase in price ($406 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($79 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

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

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?

Booking 33 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, April is the cheapest month in which you can book a flight from Chicago to Brussels (average of $635). Flying from Chicago to Brussels in June is currently the most expensive (average of $1,489). 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?

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.

Reviews of airlines servicing Brussels

Read reviews from past customers who have flown Scandinavian Airlines,United Airlines, andAer Lingus 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.
Scandinavian Airlines
7.4
Good
2,018 reviews

Boarding

7.7

Overall

7.4

Food

6.8

Comfort

7.4

Crew

8.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Scandinavian Airlines
7.4
Good
2,018 reviews
Scandinavian Airlines
7.4
Good
2,018 reviews

Boarding

7.7

Overall

7.4

Food

6.8

Comfort

7.4

Crew

8.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
United Airlines
7.4
Good
10,350 reviews
Scandinavian Airlines
7.4
Good
2,018 reviews

Boarding

7.7

Overall

7.4

Food

6.8

Comfort

7.4

Crew

8.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Aer Lingus
7.3
Good
1,826 reviews
Scandinavian Airlines
7.4
Good
2,018 reviews

Boarding

7.7

Overall

7.4

Food

6.8

Comfort

7.4

Crew

8.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Icelandair
6.9
Okay
758 reviews
Scandinavian Airlines
7.4
Good
2,018 reviews

Boarding

7.7

Overall

7.4

Food

6.8

Comfort

7.4

Crew

8.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(

Related info for your journey

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

    According to our current data, Icelandair ($433), TAP AIR PORTUGAL ($444), and Scandinavian Airlines ($477) offers the cheapest pricing from Chicago to Brussels. You may be able to fly from Chicago to Brussels for 51% 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 (60%), Austrian Airlines (60%) or Brussels Airlines (60%) 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 $1,196, our data indicates the cheapest price to be $590. The most popular route (Chicago O'Hare Intl - Brussels Bruxelles-National), is priced around $383.

  • 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, April is the cheapest month in which you can book a flight from Chicago to Brussels (average of $635). Flying from Chicago to Brussels in June is currently the most expensive (average of $1,489). 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

Alternative routes for Chicago to Brussels

O'Hare Intl to Bruxelles-National flights
St. Louis to Bruxelles-National flights

Top 7 airlines flying from Chicago to Brussels

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$433Average$665FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$444Average$463FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$477Average$704FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$534Average$751FlexibilityNo cancel feeOn-timeN/A
Brussels AirlinesCheapest$752Average$1,656FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$849Average$1,362FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$969Average$1,369FlexibilityNo cancel feeOn-time76%

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.