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

Scandinavian Airlines, Aer Lingus, and United Airlines are the most popular carriers operating from Illinois to Brussels

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

The number of flights available between Illinois and Brussels is 4 per day as of March 2026. The most frequent departure time is 5:00PM, with 100% of daily flights leaving in the afternoon.

What airlines fly to Brussels?

Scandinavian Airlines, United Airlines and Icelandair are the top three most popular airlines that fly to Brussels from Illinois according to our data. Scandinavian Airlines is the first choice among our users, with 39% 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.

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

As of March 2026, 30 flights take off from Illinois and land in Brussels each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

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

Prices for flights from Illinois to Brussels were last updated today.

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

As of March 2026, there are 8 operators available to choose from for flights from Illinois to Brussels.

How old do you have to be to fly from Illinois 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 Illinois 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.

$219 Cheap Flights from Illinois to Brussels in 2026

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Find the cheapest flights from Illinois to Brussels

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:20 pm - 7:50 pm

ORD

BRU

17h 30m

1 stop

5:45 am - 4:10 pm

BRU

ORD

17h 25m

1 stop

$467Scandinavian Airlines

Sun, Mar 22 - Wed, Apr 15

7:15 pm - 9:40 am

ORD

BRU

31h 25m

1 stop

9:10 pm - 4:10 pm

BRU

ORD

50h 00m

2 stops

$469Scandinavian Airlines

Wed, Apr 29 - Wed, May 6

7:15 pm - 2:35 pm

ORD

BRU

12h 20m

1 stop

10:20 am - 4:10 pm

BRU

ORD

12h 50m

1 stop

$470Scandinavian Airlines

Wed, Apr 29 - Wed, May 6

7:15 pm - 2:35 pm

ORD

BRU

12h 20m

1 stop

8:30 pm - 4:10 pm

BRU

ORD

26h 40m

1 stop

$473Scandinavian Airlines

Mon, Apr 20 - Tue, Apr 28

7:15 pm - 7:40 pm

ORD

CRL

17h 25m

2 stops

8:15 pm - 4:10 pm

CRL

ORD

26h 55m

2 stops

$589Multiple Airlines

Mon, Apr 20 - Thu, Apr 23

7:25 pm - 8:35 pm

ORD

CRL

18h 10m

2 stops

5:30 pm - 9:25 pm

CRL

ORD

34h 55m

3 stops

$651Multiple Airlines

Mon, Apr 20 - Thu, Apr 23

4:05 pm - 7:50 am

STL

BRU

32h 45m

1 stop

9:55 am - 9:13 pm

BRU

STL

18h 18m

2 stops

$708Air Canada

Tue, Apr 14 - Tue, Apr 21

12:15 pm - 7:15 am

STL

BRU

12h 00m

1 stop

12:00 pm - 7:22 pm

BRU

STL

14h 22m

1 stop

$717Lufthansa

Tue, Apr 14 - Tue, Apr 21

11:37 am - 1:15 pm

STL

BRU

18h 38m

2 stops

10:15 am - 9:13 pm

BRU

STL

17h 58m

1 stop

$724United Airlines

Wed, Apr 15 - Wed, Apr 22

10:00 am - 9:00 am

STL

BRU

16h 00m

1 stop

10:15 am - 7:31 pm

BRU

STL

16h 16m

1 stop

$727United Airlines

Wed, Apr 15 - Wed, Apr 22

United Airlines flights from Illinois to Brussels

Our best United Airlines deals on Illinois to Brussels flight tickets

United Airlines

Apr 15

STL11:37 amLambert-St Louis

18h 38m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Apr 22

BRU10:15 amBrussels Bruxelles-National

17h 58m

1 stop

STL9:13 pmLambert-St Louis

$724

United Airlines

Apr 15

STL10:00 amLambert-St Louis

16h 00m

1 stop

BRU9:00 amBrussels Bruxelles-National

Apr 22

BRU10:15 amBrussels Bruxelles-National

16h 16m

1 stop

STL7:31 pmLambert-St Louis

$727

United Airlines

Apr 15

STL8:21 amLambert-St Louis

15h 54m

2 stops

BRU7:15 amBrussels Bruxelles-National

Apr 22

BRU11:10 amBrussels Bruxelles-National

17h 03m

2 stops

STL9:13 pmLambert-St Louis

$732

Scandinavian Airlines flights from Illinois to Brussels

Our best Scandinavian Airlines deals on Illinois to Brussels flight tickets

Scandinavian Airlines

Mar 22

ORD8:20 pmChicago O'Hare Intl

17h 30m

1 stop

BRU7:50 pmBrussels Bruxelles-National

Apr 15

BRU5:45 amBrussels Bruxelles-National

17h 25m

1 stop

ORD4:10 pmChicago O'Hare Intl

$467

Scandinavian Airlines

Apr 29

ORD7:15 pmChicago O'Hare Intl

31h 25m

1 stop

BRU9:40 amBrussels Bruxelles-National

May 6

BRU9:10 pmBrussels Bruxelles-National

50h 00m

2 stops

ORD4:10 pmChicago O'Hare Intl

$469

Scandinavian Airlines

Apr 29

ORD7:15 pmChicago O'Hare Intl

12h 20m

1 stop

BRU2:35 pmBrussels Bruxelles-National

May 6

BRU10:20 amBrussels Bruxelles-National

12h 50m

1 stop

ORD4:10 pmChicago O'Hare Intl

$470

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 3/22

8:20 pm-7:50 pm

1 stop17h 30m

Brussels Bruxelles-National

Wed 4/15

5:45 am-4:10 pm

1 stop17h 25m

$467

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/29

7:15 pm-9:40 am

1 stop31h 25m

Brussels Bruxelles-National

Wed 5/6

9:10 pm-4:10 pm

2 stops50h 00m

$469

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/29

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Wed 5/6

10:20 am-4:10 pm

1 stop12h 50m

$470

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 4/20

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Tue 4/28

8:30 pm-4:10 pm

1 stop26h 40m

$473

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Mon 4/20

7:15 pm-7:40 pm

2 stops17h 25m

Charleroi Brussels

Thu 4/23

8:15 pm-4:10 pm

2 stops26h 55m

$589

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Mon 4/20

7:25 pm-8:35 pm

2 stops18h 10m

Charleroi Brussels

Thu 4/23

5:30 pm-9:25 pm

3 stops34h 55m

$651

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 4/14

4:05 pm-7:50 am

1 stop32h 45m

Brussels Bruxelles-National

Tue 4/21

9:55 am-9:13 pm

2 stops18h 18m

$708

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 4/14

12:15 pm-7:15 am

1 stop12h 00m

Brussels Bruxelles-National

Tue 4/21

12:00 pm-7:22 pm

1 stop14h 22m

$717

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/15

11:37 am-1:15 pm

2 stops18h 38m

Brussels Bruxelles-National

Wed 4/22

10:15 am-9:13 pm

1 stop17h 58m

$724

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 4/15

10:00 am-9:00 am

1 stop16h 00m

Brussels Bruxelles-National

Wed 4/22

10:15 am-7:31 pm

1 stop16h 16m

$727

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 Illinois 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 cheapest month to fly to Brussels?

In general, February is the cheapest month to fly from Illinois to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $532. If you are unable to visit Brussels during the month of February, then departing from Illinois during the month January is also very affordable. Most momondo users find prices during this month for around $556.

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

On average, the least expensive day to fly to Brussels from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,063. 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 Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,309.

What is the cheapest Illinois to Brussels flight route?

Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Illinois - 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 Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around $768 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from Illinois for as low as $480 on momondo.

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

There are 3 cabin classes available to choose from on Illinois to Brussels flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Illinois to Brussels flight deals and tips

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

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

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

Direct flights go from Illinois to Brussels every day.

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

Search flight deals

When did momondo last update prices for flights from Illinois to Brussels?
Prices for flights from Illinois to Brussels were last updated today.
How many operators does momondo search for flights from Illinois to Brussels?
As of March 2026, there are 8 operators available to choose from for flights from Illinois to Brussels.
How old do you have to be to fly from Illinois 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 Illinois 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 Illinois to Brussels

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

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $298	Free Cancellation	Rating 7.3 1,703 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $433	Free Cancellation	Rating 7.1 617 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $444	Free Cancellation	Rating 7.1 2,155 reviews	Search TAP AIR PORTUGAL flights
Turkish Airlines	PriceFrom $492	Free Cancellation	Rating 7.3 4,240 reviews	Search Turkish Airlines flights
Aer Lingus	PriceFrom $531	Free Cancellation	Rating 7.2 1,464 reviews	Search Aer Lingus flights
United Airlines	PriceFrom $589	Free Cancellation	Rating 7.4 9,381 reviews	Search United Airlines flights
Brussels Airlines	PriceFrom $752	Free Cancellation	Rating 7.2 388 reviews	Search Brussels Airlines flights
Lufthansa	PriceFrom $969	Free Cancellation	Rating 6.8 7,822 reviews	Search Lufthansa flights

Why use momondo?

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

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

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

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

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

Once you have performed a search for Illinois to Brussels flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Illinois 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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Cheap flights from Illinois to Brussels from $219

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Brussels departing on 4/26. 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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How to get the cheapest flight ticket from Illinois to 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 Illinois to Brussels flight route?

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

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

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

What airlines fly to Brussels?

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

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

Cheap Illinois to Brussels flight deals and tips

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

Fastest flight time

Direct flights

Airports in Brussels

Best airlines flying from Illinois to Brussels

Compare and see reviews for airlines that fly from Illinois 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

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