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

United Airlines and Air Canada are the most popular carriers operating from Illinois to Brussels Bruxelles-National

What airlines fly to Brussels Bruxelles-National Airport?

United Airlines, Scandinavian Airlines and Icelandair are the top three most popular airlines that fly to Brussels Bruxelles-National Airport from Illinois according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Brussels Bruxelles-National Airport. Keep in mind that there are 8 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 January 2026, 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.

$278 Cheap Flights from Illinois to Brussels Bruxelles-National Airport in 2026

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

As of January 2026, 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.

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 January 2026. The most frequent departure time is 5:00PM, with 100% of daily flights leaving in the afternoon.

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 pm - 8:05 pm

ORD

BRU

19h 05m

1 stop

5:55 am - 4:00 pm

BRU

ORD

17h 05m

1 stop

$440TAP AIR PORTUGAL

Fri, Apr 24 - Wed, May 6

7:10 pm - 5:05 pm

ORD

BRU

14h 55m

1 stop

5:55 pm - 4:00 pm

BRU

ORD

28h 05m

1 stop

$441TAP AIR PORTUGAL

Wed, Mar 4 - Tue, Mar 10

7:15 pm - 9:40 am

ORD

BRU

31h 25m

1 stop

9:10 pm - 4:10 pm

BRU

ORD

50h 00m

2 stops

$455Scandinavian Airlines

Wed, Apr 15 - Wed, Apr 22

7:15 pm - 6:30 pm

ORD

BRU

16h 15m

1 stop

5:45 am - 4:10 pm

BRU

ORD

17h 25m

1 stop

$459Scandinavian Airlines

Mon, Apr 13 - Wed, Apr 22

7:41 am - 8:55 am

STL

BRU

18h 14m

1 stop

10:00 am - 2:42 pm

BRU

STL

34h 42m

2 stops

$489United Airlines

Sun, Mar 1 - Wed, Mar 11

7:40 am - 7:50 am

STL

BRU

18h 10m

2 stops

10:00 am - 2:42 pm

BRU

STL

34h 42m

2 stops

$493Air Canada

Wed, Mar 18 - Wed, Mar 25

5:00 am - 1:15 pm

PAH

BRU

25h 15m

2 stops

10:10 am - 1:27 pm

BRU

PAH

34h 17m

1 stop

$502United Airlines

Wed, Feb 25 - Sun, Mar 1

4:05 pm - 1:15 pm

STL

BRU

14h 10m

2 stops

10:00 am - 9:05 pm

BRU

STL

18h 05m

2 stops

$513Air Canada

Wed, Feb 25 - Sun, Mar 1

10:45 am - 7:40 am

MDW

BRU

13h 55m

1 stop

9:45 am - 4:25 pm

BRU

MDW

13h 40m

1 stop

$767Delta

Sun, Apr 12 - Thu, Apr 23

10:45 am - 8:00 am

MDW

BRU

15h 15m

1 stop

8:05 am - 5:54 pm

BRU

MDW

16h 49m

2 stops

$776Delta

Mon, Mar 23 - Wed, Apr 1

United Airlines flights from Illinois to Brussels Bruxelles-National Airport

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

United Airlines

Mar 1

STL7:41 amLambert-St Louis

18h 14m

1 stop

BRU8:55 amBrussels Bruxelles-National

Mar 11

BRU10:00 amBrussels Bruxelles-National

34h 42m

2 stops

STL2:42 pmLambert-St Louis

$489

United Airlines

Feb 25

PAH5:00 amPaducah Barkley Regional

25h 15m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Mar 1

BRU10:10 amBrussels Bruxelles-National

34h 17m

1 stop

PAH1:27 pmPaducah Barkley Regional

$502

United Airlines

Feb 25

PAH2:05 pmPaducah Barkley Regional

40h 10m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Mar 1

BRU10:00 amBrussels Bruxelles-National

34h 27m

2 stops

PAH1:27 pmPaducah Barkley Regional

$505

Air Canada flights from Illinois to Brussels Bruxelles-National Airport

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

Air Canada

Mar 18

STL7:40 amLambert-St Louis

18h 10m

2 stops

BRU7:50 amBrussels Bruxelles-National

Mar 25

BRU10:00 amBrussels Bruxelles-National

34h 42m

2 stops

STL2:42 pmLambert-St Louis

$493

Air Canada

Feb 25

STL4:05 pmLambert-St Louis

14h 10m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Mar 1

BRU10:00 amBrussels Bruxelles-National

18h 05m

2 stops

STL9:05 pmLambert-St Louis

$513

Air Canada

Feb 10

STL4:05 pmLambert-St Louis

33h 50m

2 stops

BRU8:55 amBrussels Bruxelles-National

Feb 24

BRU10:00 amBrussels Bruxelles-National

43h 59m

2 stops

STL10:59 pmLambert-St Louis

$690

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

Fri 4/24

6:00 pm-8:05 pm

1 stop19h 05m

Brussels Bruxelles-National

Wed 5/6

5:55 am-4:00 pm

1 stop17h 05m

$440

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 3/4

7:10 pm-5:05 pm

1 stop14h 55m

Brussels Bruxelles-National

Tue 3/10

5:55 pm-4:00 pm

1 stop28h 05m

$441

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/15

7:15 pm-9:40 am

1 stop31h 25m

Brussels Bruxelles-National

Wed 4/22

9:10 pm-4:10 pm

2 stops50h 00m

$455

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 4/13

7:15 pm-6:30 pm

1 stop16h 15m

Brussels Bruxelles-National

Wed 4/22

5:45 am-4:10 pm

1 stop17h 25m

$459

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 3/1

7:41 am-8:55 am

1 stop18h 14m

Brussels Bruxelles-National

Wed 3/11

10:00 am-2:42 pm

2 stops34h 42m

$489

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/18

7:40 am-7:50 am

2 stops18h 10m

Brussels Bruxelles-National

Wed 3/25

10:00 am-2:42 pm

2 stops34h 42m

$493

PaducahBrussels

PAH - BRU

PAHBRU

Paducah Barkley Regional

Wed 2/25

5:00 am-1:15 pm

2 stops25h 15m

Brussels Bruxelles-National

Sun 3/1

10:10 am-1:27 pm

1 stop34h 17m

$502

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 2/25

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Sun 3/1

10:00 am-9:05 pm

2 stops18h 05m

$513

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Sun 4/12

10:45 am-7:40 am

1 stop13h 55m

Brussels Bruxelles-National

Thu 4/23

9:45 am-4:25 pm

1 stop13h 40m

$767

ChicagoBrussels

MDW - BRU

MDWBRU

Chicago Midway

Mon 3/23

10:45 am-8:00 am

1 stop15h 15m

Brussels Bruxelles-National

Wed 4/1

8:05 am-5:54 pm

2 stops16h 49m

$776

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 September. Flight prices, which tend to average around $578, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Brussels Bruxelles-National Airport from Illinois during October instead. Flights to Brussels Bruxelles-National Airport in October, while not as cheap as those in September, still average around $600.

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 Tuesday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Tuesday will often find tickets for as low as $1,067. 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 $1,347.

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 $764 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 $500 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	$658
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 $658. The best round-trip flight deal from Illinois to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $944.

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 January 2026, 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 46.52% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 26.01%, Boeing 787-9 Dreamliner with 4.40%, and Airbus A330-300 with 4.40%.

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 $293	Free Cancellation	Rating 7.3 1,674 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $428	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $445	Free Cancellation	Rating 7.1 2,130 reviews	Search TAP AIR PORTUGAL flights
Turkish Airlines	PriceFrom $492	Free Cancellation	Rating 7.3 4,208 reviews	Search Turkish Airlines flights
Aer Lingus	PriceFrom $531	Free Cancellation	Rating 7.2 1,443 reviews	Search Aer Lingus flights
British Airways	PriceFrom $551	Free Cancellation	Rating 6.7 7,705 reviews	Search British Airways flights
United Airlines	PriceFrom $590	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
Brussels Airlines	PriceFrom $752	Free Cancellation	Rating 7.2 381 reviews	Search Brussels Airlines flights

Ghent

Bruges

Leuven

Charleroi

Zaventem

Hasselt

Spa

Namur

Dinant

Genk

Mons

Waterloo

Durbuy

Aalst

Knokke-Heist

Mechelen

Francorchamps

Tournai

Oostkamp

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.

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Brussels Bruxelles-National Airport flight routes

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

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Flights from Newark to Brussels Bruxelles-National

Flights from London Heathrow to Brussels Bruxelles-National

Flights from Chicago O'Hare Intl to Brussels Bruxelles-National

Cheap flights from Illinois to Brussels from $278

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 4/29. 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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United Airlines flights from Illinois to Brussels Bruxelles-National Airport

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

Air Canada flights from Illinois to Brussels Bruxelles-National Airport

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

momondo Fare Finder

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

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

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 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?

United Airlines and Air Canada 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 January 2026. 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 January 2026, 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