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

TAP AIR PORTUGAL and Scandinavian Airlines are the most popular carriers operating from Illinois to Brussels Bruxelles-National

What airlines fly to Brussels Bruxelles-National Airport?

Scandinavian Airlines, United Airlines and Aer Lingus are the top three most popular airlines that fly to Brussels Bruxelles-National Airport from Illinois according to our data. Scandinavian Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Brussels Bruxelles-National Airport. Keep in mind that there are 9 different airlines that fly to Brussels Bruxelles-National Airport on a routine basis, so you have a few additional options to choose from.

How many operators does momondo search for flights from Illinois to Brussels Bruxelles-National Airport?

As of September 2025, there are 9 operators available to choose from for flights from Illinois to Brussels Bruxelles-National Airport.

How old do you have to be to fly from Illinois to Brussels Bruxelles-National Airport?

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 Bruxelles-National Airport.

What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?

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

$243 Cheap Flights from Illinois to Brussels Bruxelles-National Airport in 2025/26

Q: How many flights depart from Illinois to Brussels Bruxelles-National Airport on average per day?

The number of flights available between Illinois and Brussels Bruxelles-National Airport is 5 per day as of September 2025. The most frequent departure time is 5:00PM, with 100% of daily flights leaving in the afternoon.

Q: How many flights depart from Illinois to Brussels Bruxelles-National Airport on average per week?

As of September 2025, 35 flights take off from Illinois and land in Brussels Bruxelles-National Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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Find the cheapest flights from Illinois to Brussels

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

10:40 am - 7:50 pmORD-BRU

26h 10m2 stops

10:20 am - 4:45 pmBRU-ORD

13h 25m1 stop

$412Scandinavian Airlines

Find Deal

Tue, Feb 24 - Thu, Mar 5

7:10 am - 7:50 pmORD-BRU

29h 40m2 stops

10:20 am - 4:45 pmBRU-ORD

13h 25m1 stop

$422Scandinavian Airlines

Find Deal

Tue, Nov 18 - Sun, Nov 23

12:31 pm - 8:55 amSTL-BRU

13h 24m1 stop

10:00 am - 12:28 pmBRU-STL

33h 28m2 stops

$584United Airlines

Find Deal

Wed, Nov 12 - Thu, Nov 27

4:05 pm - 1:15 pmSTL-BRU

14h 10m2 stops

10:00 am - 12:28 pmBRU-STL

33h 28m2 stops

$590Air Canada

Find Deal

Wed, Nov 12 - Thu, Nov 27

3:14 pm - 8:55 amSTL-BRU

10h 41m1 stop

10:10 am - 12:28 pmBRU-STL

33h 18m1 stop

$612United Airlines

Find Deal

Wed, Nov 12 - Thu, Nov 27

3:19 pm - 7:50 amSTL-BRU

33h 31m2 stops

10:00 am - 2:26 pmBRU-STL

35h 26m2 stops

$660Air Canada

Find Deal

Mon, Dec 15 - Thu, Dec 25

10:20 am - 9:00 amEVV-BRU

15h 40m2 stops

6:15 am - 5:15 pmBRU-EVV

18h 00m2 stops

$677KLM

Find Deal

Wed, Nov 5 - Sun, Nov 9

3:14 pm - 8:55 amSTL-BRU

10h 41m1 stop

7:30 pm - 1:55 pmBRU-STL

25h 25m1 stop

$716Lufthansa

Find Deal

Wed, Nov 12 - Thu, Nov 27

6:40 pm - 10:10 amSTL-BRU

32h 30m2 stops

8:30 am - 1:30 pmBRU-STL

12h 00m1 stop

$802Lufthansa

Find Deal

Sat, Jan 31 - Sun, May 31

10:35 am - 8:40 amMDW-BRU

15h 05m1 stop

10:45 am - 9:36 pmBRU-MDW

17h 51m1 stop

$2,077KLM

Find Deal

Thu, Oct 2 - Sun, Oct 5

Lufthansa flights from Illinois to Brussels Bruxelles-National Airport

Our best Lufthansa deals on Illinois to Brussels Bruxelles-National Airport flight tickets

Lufthansa

Nov 12

STL3:14 pmLambert-St Louis

10h 41m

1 stop

BRU8:55 amBrussels Bruxelles-National

Nov 27

BRU7:30 pmBrussels Bruxelles-National

25h 25m

1 stop

STL1:55 pmLambert-St Louis

$716

Find similar

Lufthansa

Jan 31

STL6:40 pmLambert-St Louis

32h 30m

2 stops

BRU10:10 amBrussels Bruxelles-National

May 31

BRU8:30 amBrussels Bruxelles-National

12h 00m

1 stop

STL1:30 pmLambert-St Louis

$802

Find similar

Lufthansa

Feb 1

STL1:15 pmLambert-St Louis

12h 40m

1 stop

BRU8:55 amBrussels Bruxelles-National

Jun 1

BRU10:15 amBrussels Bruxelles-National

12h 06m

1 stop

STL3:21 pmLambert-St Louis

$962

Find similar

Scandinavian Airlines flights from Illinois to Brussels Bruxelles-National Airport

Our best Scandinavian Airlines deals on Illinois to Brussels Bruxelles-National Airport flight tickets

Scandinavian Airlines

Feb 24

ORD10:40 amChicago O'Hare Intl

26h 10m

2 stops

BRU7:50 pmBrussels Bruxelles-National

Mar 5

BRU10:20 amBrussels Bruxelles-National

13h 25m

1 stop

ORD4:45 pmChicago O'Hare Intl

$412

Find similar

Scandinavian Airlines

Nov 18

ORD7:10 amChicago O'Hare Intl

29h 40m

2 stops

BRU7:50 pmBrussels Bruxelles-National

Nov 23

BRU10:20 amBrussels Bruxelles-National

13h 25m

1 stop

ORD4:45 pmChicago O'Hare Intl

$422

Find similar

Scandinavian Airlines

Nov 18

ORD10:30 amChicago O'Hare Intl

21h 00m

2 stops

BRU2:30 pmBrussels Bruxelles-National

Nov 23

BRU7:45 pmBrussels Bruxelles-National

28h 00m

2 stops

ORD4:45 pmChicago O'Hare Intl

$424

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Brussels Bruxelles-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 2/24

10:40 am-7:50 pm

2 stops26h 10m

Brussels Bruxelles-National

Thu 3/5

10:20 am-4:45 pm

1 stop13h 25m

$412

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 11/18

7:10 am-7:50 pm

2 stops29h 40m

Brussels Bruxelles-National

Sun 11/23

10:20 am-4:45 pm

1 stop13h 25m

$422

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

12:31 pm-8:55 am

1 stop13h 24m

Brussels Bruxelles-National

Thu 11/27

10:00 am-12:28 pm

2 stops33h 28m

$584

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Thu 11/27

10:00 am-12:28 pm

2 stops33h 28m

$590

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

3:14 pm-8:55 am

1 stop10h 41m

Brussels Bruxelles-National

Thu 11/27

10:10 am-12:28 pm

1 stop33h 18m

$612

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 12/15

3:19 pm-7:50 am

2 stops33h 31m

Brussels Bruxelles-National

Thu 12/25

10:00 am-2:26 pm

2 stops35h 26m

$660

EvansvilleBrussels

EVV - BRU

EVVBRU

Evansville Dress Regional

Wed 11/5

10:20 am-9:00 am

2 stops15h 40m

Brussels Bruxelles-National

Sun 11/9

6:15 am-5:15 pm

2 stops18h 00m

$677

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

3:14 pm-8:55 am

1 stop10h 41m

Brussels Bruxelles-National

Thu 11/27

7:30 pm-1:55 pm

1 stop25h 25m

$716

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 1/31

6:40 pm-10:10 am

2 stops32h 30m

Brussels Bruxelles-National

Sun 5/31

8:30 am-1:30 pm

1 stop12h 00m

$802

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Thu 10/2

10:35 am-8:40 am

1 stop15h 05m

Brussels Bruxelles-National

Sun 10/5

10:45 am-9:36 pm

1 stop17h 51m

$2,077

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 Bruxelles-National Airport

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 Bruxelles-National Airport?

The cheapest month to fly to Brussels Bruxelles-National Airport from Illinois is in April. Flight prices, which tend to average around $581, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Brussels Bruxelles-National Airport from Illinois during February instead. Flights to Brussels Bruxelles-National Airport in February, while not as cheap as those in April, still average around $592.

What is the cheapest day to depart on your flight to Brussels Bruxelles-National Airport?

The cheapest day to depart from Illinois to Brussels Bruxelles-National Airport is on a Wednesday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Wednesday will often find tickets for as low as $1,103. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Brussels Bruxelles-National Airport for around $1,396.

What is the cheapest time of day to depart on your flight to Brussels Bruxelles-National Airport?

Our most recent data shows that the best time of day to fly to Brussels Bruxelles-National Airport is in the evening. Flights from Illinois to Brussels Bruxelles-National Airport during this time can be as low as $579. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,186 on average. Flights to Brussels Bruxelles-National Airport from Illinois in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to Brussels Bruxelles-National flight route?

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

How far in advance should I book a flight to Brussels Bruxelles-National Airport?

You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport 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 Bruxelles-National Airport from Illinois for as low as $614 on momondo.

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

There are 3 cabin classes available to choose from on Illinois to Brussels Bruxelles-National 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 Bruxelles-National Airport flight deals and tips

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

Best Price Found	$614
Fastest flight time	8h 00m
Direct flights	Every day

The best one-way flight to Brussels Bruxelles-National Airport from Illinois in the past 72 hours is $614. The best round-trip flight deal from Illinois to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $888.

The fastest flight from Illinois to Brussels Bruxelles-National Airport takes 8h 00m

Direct flights go from Illinois to Brussels Bruxelles-National Airport every day.

Search flight deals

When did momondo last update prices for flights from Illinois to Brussels Bruxelles-National Airport?
Prices for flights from Illinois to Brussels Bruxelles-National Airport were last updated today.
How many operators does momondo search for flights from Illinois to Brussels Bruxelles-National Airport?
As of September 2025, there are 9 operators available to choose from for flights from Illinois to Brussels Bruxelles-National Airport.
How old do you have to be to fly from Illinois to Brussels Bruxelles-National Airport?
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 Bruxelles-National Airport.
What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?
The travel and health documents you'll need for your trip to Brussels Bruxelles-National Airport 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 Bruxelles-National Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to Brussels Bruxelles-National Airport?
Based on momondo bookings for flights between Illinois and Brussels Bruxelles-National Airport, the leading plane model is Boeing 787 Dreamliner, making up 43.32% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 36.14%, Boeing 787-8 Dreamliner with 3.71%, and Airbus A330 with 2.97%.

Best airlines flying from Illinois to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Illinois to Brussels Bruxelles-National Airport with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $312	Free Cancellation	Rating 7.4 1,492 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $405	Free Cancellation	Rating 7.0 545 reviews	Search Icelandair flights
Turkish Airlines	PriceFrom $492	Free Cancellation	Rating 7.3 3,975 reviews	Search Turkish Airlines flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,387 reviews	Search KLM flights
British Airways	PriceFrom $551	Free Cancellation	Rating 6.7 7,386 reviews	Search British Airways flights
Aer Lingus	PriceFrom $581	Free Cancellation	Rating 7.2 1,296 reviews	Search Aer Lingus flights
United Airlines	PriceFrom $590	Free Cancellation	Rating 7.4 8,922 reviews	Search United Airlines flights
TAP AIR PORTUGAL	PriceFrom $744	Free Cancellation	Rating 7.1 1,987 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $754	Free Cancellation	Rating 6.8 7,421 reviews	Search Lufthansa flights

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Hasselt

Spa

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Aalst

Dinant

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Waterloo

Genk

Mechelen

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Knokke-Heist

Tournai

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Halle

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Brussels for you.

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

Yes. momondo allows you to filter the results for Illinois to Brussels flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Brussels.

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

If you are simply researching potential flights to Brussels, momondo offers a useful price alert feature which will track prices for flights to Brussels from Illinois and alert you when they change.

An easier way to manage your Brussels Bruxelles-National Airport trip

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Flights to Charleroi Brussels Airportfrom $438

Brussels Bruxelles-National Airport flight routes

Flights from New York John F Kennedy Intl to Brussels Bruxelles-National

Flights from Washington, D.C. Dulles Intl to Brussels Bruxelles-National

Flights from Newark to Brussels Bruxelles-National

Flights from Kinshasa N'djili to Brussels Bruxelles-National

Flights from London Heathrow to Brussels Bruxelles-National

Cheap flights from Illinois 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 Illinois to Brussels departing on 10/15. 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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Lufthansa flights from Illinois to Brussels Bruxelles-National Airport

Our best Lufthansa deals on Illinois to Brussels Bruxelles-National Airport flight tickets

Scandinavian Airlines flights from Illinois to Brussels Bruxelles-National Airport

Our best Scandinavian Airlines deals on Illinois to Brussels Bruxelles-National Airport flight tickets

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How to get the cheapest flight ticket from Illinois to Brussels Bruxelles-National Airport

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 Bruxelles-National Airport?

What is the cheapest day to depart on your flight to Brussels Bruxelles-National Airport?

What is the cheapest time of day to depart on your flight to Brussels Bruxelles-National Airport?

What is the cheapest Illinois to Brussels Bruxelles-National flight route?

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

How far in advance should I book a flight to Brussels Bruxelles-National Airport?

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

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

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

TAP AIR PORTUGAL and Scandinavian Airlines are the most popular carriers operating from Illinois to Brussels Bruxelles-National

What airlines fly to Brussels Bruxelles-National Airport?

How many flights depart from Illinois to Brussels Bruxelles-National Airport on average per day?

The number of flights available between Illinois and Brussels Bruxelles-National Airport is 5 per day as of September 2025. The most frequent departure time is 5:00PM, with 100% of daily flights leaving in the afternoon.

How many flights depart from Illinois to Brussels Bruxelles-National Airport on average per week?

As of September 2025, 35 flights take off from Illinois and land in Brussels Bruxelles-National Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

Cheap Illinois to Brussels Bruxelles-National Airport flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

When did momondo last update prices for flights from Illinois to Brussels Bruxelles-National Airport?

How many operators does momondo search for flights from Illinois to Brussels Bruxelles-National Airport?

How old do you have to be to fly from Illinois to Brussels Bruxelles-National Airport?

What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?

What is the most popular plane model from Illinois to Brussels Bruxelles-National Airport?

Best airlines flying from Illinois to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Illinois to Brussels Bruxelles-National Airport with momondo

Traveling to a place near Brussels?

Why use momondo?

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

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

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

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

An easier way to manage your Brussels Bruxelles-National Airport 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 Brussels

Popular cities in Belgium

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