What is the cheapest airline that flies from Chicago to Brussels?

Icelandair and United Airlines are the most popular carriers operating from Chicago to Brussels

How many flights depart from Chicago to Brussels on average per day?

As of June 2026, there are 5 flights per day flying from Chicago to Brussels. The most common time of day flights depart is 6:00PM, with 100% of flights taking off in the evening.

How many flights depart from Chicago to Brussels on average per week?

As of June 2026, 35 flights take off from Chicago and land in Brussels each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

What airlines fly to Brussels?

United Airlines, Scandinavian Airlines and Icelandair are the top three most popular airlines that fly to Brussels from Chicago according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Brussels. Keep in mind that there are 8 different airlines that fly to Brussels on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Chicago to Brussels?

Prices for flights from Chicago to Brussels refresh daily.

How many operators does momondo search for flights from Chicago to Brussels?

The number of operators available for flights from Chicago to Brussels is 8 as of June 2026.

How old do you have to be to fly from Chicago to Brussels?

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.

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

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

$323 Cheap Flights from Chicago to Brussels in 2026

Q: What is the typical price of a round-trip flight between Chicago and Brussels?

Prices are currently low for flights on this route. Typical prices usually range from $2,106 to $998. The lowest price recently found on this route was $625.

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Chicago to Brussels

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 pm - 11:00 pm

ORD

BRU

20h 45m

1 stop

5:45 am - 4:10 pm

BRU

ORD

17h 25m

1 stop

$625Scandinavian Airlines

Sat, Oct 10 - Wed, Oct 14

8:15 pm - 6:35 pm

ORD

BRU

16h 20m

1 stop

7:00 pm - 4:45 pm

BRU

ORD

28h 45m

2 stops

$629Scandinavian Airlines

Wed, Oct 28 - Wed, Nov 11

7:15 pm - 6:20 pm

ORD

BRU

16h 05m

2 stops

10:20 am - 4:10 pm

BRU

ORD

12h 50m

1 stop

$634Scandinavian Airlines

Sat, Oct 17 - Fri, Oct 23

8:15 pm - 6:40 pm

ORD

BRU

16h 25m

2 stops

7:00 pm - 4:45 pm

BRU

ORD

28h 45m

2 stops

$635Scandinavian Airlines

Wed, Oct 28 - Wed, Nov 11

9:30 pm - 10:35 pm

ORD

CRL

18h 05m

1 stop

7:55 am - 5:50 pm

CRL

ORD

16h 55m

2 stops

$733Multiple Airlines

Sun, Aug 30 - Tue, Sep 29

9:30 pm - 10:35 pm

ORD

CRL

18h 05m

1 stop

8:50 am - 5:50 pm

CRL

ORD

16h 00m

2 stops

$768Multiple Airlines

Sun, Aug 30 - Mon, Sep 28

10:48 am - 7:40 am

MDW

BRU

13h 52m

1 stop

9:45 am - 4:11 pm

BRU

MDW

13h 26m

1 stop

$1,017Delta

Wed, Sep 16 - Tue, Sep 22

1:00 pm - 7:40 am

MDW

BRU

11h 40m

1 stop

9:45 am - 6:33 pm

BRU

MDW

15h 48m

2 stops

$1,021Delta

Wed, Sep 16 - Tue, Sep 22

1:05 pm - 10:55 am

MDW

BRU

14h 50m

1 stop

12:55 pm - 9:45 pm

BRU

MDW

15h 50m

1 stop

$1,037Air France

Sun, Nov 29 - Sun, Dec 6

12:50 pm - 7:40 am

MDW

BRU

11h 50m

1 stop

9:45 am - 4:15 pm

BRU

MDW

13h 30m

1 stop

$1,140Air France

Sun, Jul 5 - Tue, Jul 14

Delta flights from Chicago to Brussels

Our best Delta deals on Chicago to Brussels flight tickets

Delta

Sep 16

MDW10:48 amChicago Midway

13h 52m

1 stop

BRU7:40 amBrussels Bruxelles-National

Sep 22

BRU9:45 amBrussels Bruxelles-National

13h 26m

1 stop

MDW4:11 pmChicago Midway

$1,017

Delta

Sep 16

MDW1:00 pmChicago Midway

11h 40m

1 stop

BRU7:40 amBrussels Bruxelles-National

Sep 22

BRU9:45 amBrussels Bruxelles-National

15h 48m

2 stops

MDW6:33 pmChicago Midway

$1,021

Delta

Nov 29

MDW9:30 amChicago Midway

18h 25m

2 stops

BRU10:55 amBrussels Bruxelles-National

Dec 6

BRU12:55 pmBrussels Bruxelles-National

15h 50m

1 stop

MDW9:45 pmChicago Midway

$1,041

KLM flights from Chicago to Brussels

Our best KLM deals on Chicago to Brussels flight tickets

KLM

Jul 19

MDW11:05 amChicago Midway

13h 35m

1 stop

BRU7:40 amBrussels Bruxelles-National

Jul 26

BRU9:45 amBrussels Bruxelles-National

13h 30m

1 stop

MDW4:15 pmChicago Midway

$1,207

KLM

Aug 17

MDW10:54 amChicago Midway

13h 46m

1 stop

BRU7:40 amBrussels Bruxelles-National

Aug 30

BRU9:45 amBrussels Bruxelles-National

13h 30m

1 stop

MDW4:15 pmChicago Midway

$1,271

KLM

Sep 9

MDW10:35 amChicago Midway

14h 05m

1 stop

BRU7:40 amBrussels Bruxelles-National

Sep 17

BRU9:45 amBrussels Bruxelles-National

13h 26m

1 stop

MDW4:11 pmChicago Midway

$1,277

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sat 10/10

7:15 pm-11:00 pm

1 stop20h 45m

Brussels Bruxelles-National

Wed 10/14

5:45 am-4:10 pm

1 stop17h 25m

$625

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 10/28

8:15 pm-6:35 pm

1 stop16h 20m

Brussels Bruxelles-National

Wed 11/11

7:00 pm-4:45 pm

2 stops28h 45m

$629

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sat 10/17

7:15 pm-6:20 pm

2 stops16h 05m

Brussels Bruxelles-National

Fri 10/23

10:20 am-4:10 pm

1 stop12h 50m

$634

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 10/28

8:15 pm-6:40 pm

2 stops16h 25m

Brussels Bruxelles-National

Wed 11/11

7:00 pm-4:45 pm

2 stops28h 45m

$635

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Sun 8/30

9:30 pm-10:35 pm

1 stop18h 05m

Charleroi Brussels

Tue 9/29

7:55 am-5:50 pm

2 stops16h 55m

$733

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Sun 8/30

9:30 pm-10:35 pm

1 stop18h 05m

Charleroi Brussels

Mon 9/28

8:50 am-5:50 pm

2 stops16h 00m

$768

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Wed 9/16

10:48 am-7:40 am

1 stop13h 52m

Brussels Bruxelles-National

Tue 9/22

9:45 am-4:11 pm

1 stop13h 26m

$1,017

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Wed 9/16

1:00 pm-7:40 am

1 stop11h 40m

Brussels Bruxelles-National

Tue 9/22

9:45 am-6:33 pm

2 stops15h 48m

$1,021

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sun 11/29

1:05 pm-10:55 am

1 stop14h 50m

Brussels Bruxelles-National

Sun 12/6

12:55 pm-9:45 pm

1 stop15h 50m

$1,037

Quickest round-trip

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sun 7/5

12:50 pm-7:40 am

1 stop11h 50m

Brussels Bruxelles-National

Tue 7/14

9:45 am-4:15 pm

1 stop13h 30m

$1,140

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago 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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Chicago and Brussels?

What is the cheapest month to fly to Brussels?

In general, May is the cheapest month to fly from Chicago to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $129. If you are unable to visit Brussels during the month of May, then departing from Chicago during the month January is also very affordable. Most momondo users find prices during this month for around $377.

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

On average, the least expensive day to fly to Brussels from Chicago is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,046. 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 because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,373.

What is the cheapest Chicago to Brussels flight route?

Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Chicago - Brussels flight prices

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

You are more likely to see cheaper flights to Brussels from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around $787 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from Chicago for as low as $477 on momondo.

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

There are 3 cabin classes available to choose from on Chicago 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 to Brussels flight deals and tips

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

Fastest flight time	8h 00m
Direct flights	Every day
Airports in Brussels	2 airports

The fastest flight from Chicago to Brussels takes 8h 00m

Direct flights go from Chicago to Brussels every day.

There are 2 airports in Brussels. From Chicago there are direct flights to Brussels Bruxelles-National (BRU).

Search flight deals

Frequently asked questions about flying from Chicago to Brussels

How far is Chicago to Brussels by plane?
The distance between Chicago and Brussels is about 4136.1 mi. By plane, this route typically takes 8h 00m.
When did momondo last update prices for flights from Chicago to Brussels?
Prices for flights from Chicago to Brussels refresh daily.
How many operators does momondo search for flights from Chicago to Brussels?
The number of operators available for flights from Chicago to Brussels is 8 as of June 2026.
How old do you have to be to fly from Chicago to Brussels?
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.
What documentation or ID do you need to fly to Brussels?
The travel and health documents you'll need for your trip to Brussels 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Chicago to Brussels

Compare and see reviews for airlines that fly from Chicago to Brussels with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $418	Free Cancellation	Rating 7.0 665 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $444	Free Cancellation	Rating 7.2 2,272 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $448	Free Cancellation	Rating 7.4 1,806 reviews	Search Scandinavian Airlines flights
Aer Lingus	PriceFrom $531	Free Cancellation	Rating 7.3 1,595 reviews	Search Aer Lingus flights
Turkish Airlines	PriceFrom $582	Free Cancellation	Rating 7.4 4,409 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $642	Free Cancellation	Rating 7.4 9,778 reviews	Search United Airlines flights
Brussels Airlines	PriceFrom $752	Free Cancellation	Rating 7.2 409 reviews	Search Brussels Airlines flights
Lufthansa	PriceFrom $969	Free Cancellation	Rating 6.8 8,036 reviews	Search Lufthansa flights

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?

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 offers price alerts on flights to Brussels from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Brussels 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

Sat 7/4

Sat 7/11

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Belgium

Nearby airports

Airlines

Other Belgium destinations

Other flights from Chicago

Complete your trip

Feeling lucky

Fly into one of these airports located in Brussels

Brussels Bruxelles-National Airport

Charleroi Brussels Airport

Cheap flights from Chicago to Brussels from $323

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 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Chicago to Brussels

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Delta flights from Chicago to Brussels

Our best Delta deals on Chicago to Brussels flight tickets

KLM flights from Chicago to Brussels

Our best KLM deals on Chicago to Brussels flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Chicago to Brussels that are best for you.

See travel insights to Brussels from

How to get the cheapest flight ticket from Chicago to Brussels

What is the typical price of a round-trip flight between Chicago and Brussels?

What is the cheapest month to fly to Brussels?

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

What is the cheapest Chicago to Brussels flight route?

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

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

What is the cheapest airline that flies from Chicago to Brussels?

What airlines fly to Brussels?

How many flights depart from Chicago to Brussels on average per day?

How many flights depart from Chicago to Brussels on average per week?

Cheap Chicago to Brussels flight deals and tips

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

Fastest flight time

Direct flights

Airports in Brussels

Frequently asked questions about flying from Chicago to Brussels

Best airlines flying from Chicago to Brussels

Compare and see reviews for airlines that fly from Chicago to Brussels with momondo

Why use momondo?

An easier way to manage your Brussels 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Brussels

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Popular cities in Belgium

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Chicago

According to popular flight searches on momondo this year

Complete your trip to Brussels

Explore popular destinations other users love

According to popular flight searches on momondo this year