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

United Airlines, British Airways, and Icelandair are the most popular carriers operating from Illinois to Belgium

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

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

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

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

What airlines fly to Belgium?

United Airlines, Scandinavian Airlines and Icelandair are the top three most popular airlines that fly to Belgium 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 Belgium. Keep in mind that there are 8 different airlines that fly to Belgium on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to Belgium are refreshed on a daily basis.

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

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

How old do you have to be to fly from Illinois to Belgium?

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 Belgium.

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

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

$339 Cheap Flights from Illinois to Belgium in 2026

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Find the cheapest flights from Illinois to Belgium

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 pm - 7:50 pm

ORD

BRU

17h 35m

1 stop

8:30 pm - 5:45 pm

BRU

ORD

28h 15m

1 stop

$676Scandinavian Airlines

Wed, Sep 30 - Sat, Oct 24

11:25 am - 10:10 am

ORD

BRU

15h 45m

1 stop

6:55 pm - 9:40 am

BRU

ORD

21h 45m

1 stop

$682Turkish Airlines

Wed, Sep 16 - Tue, Sep 22

11:25 am - 10:10 am

ORD

BRU

15h 45m

1 stop

11:20 am - 9:40 am

BRU

ORD

29h 20m

1 stop

$683Turkish Airlines

Wed, Sep 16 - Tue, Sep 22

7:25 pm - 3:30 pm

ORD

CRL

13h 05m

2 stops

4:50 pm - 11:50 am

CRL

ORD

26h 00m

1 stop

$804Multiple Airlines

Thu, Sep 3 - Sat, Sep 12

7:25 pm - 10:55 pm

ORD

CRL

20h 30m

2 stops

6:45 am - 11:50 am

CRL

ORD

36h 05m

1 stop

$827Multiple Airlines

Tue, Jul 28 - Sat, Aug 8

9:35 pm - 9:55 am

STL

BRU

29h 20m

1 stop

8:50 pm - 7:30 pm

BRU

STL

29h 40m

1 stop

$878British Airways

Wed, Sep 30 - Mon, Oct 5

9:35 pm - 8:25 pm

STL

BRU

15h 50m

1 stop

10:50 am - 11:25 pm

BRU

STL

19h 35m

2 stops

$928American Airlines

Wed, Sep 30 - Mon, Oct 5

9:35 pm - 8:25 pm

STL

BRU

15h 50m

1 stop

8:50 pm - 11:25 pm

BRU

STL

33h 35m

2 stops

$931British Airways

Wed, Sep 30 - Mon, Oct 5

8:55 am - 7:50 am

STL

BRU

15h 55m

1 stop

9:55 am - 6:42 pm

BRU

STL

39h 47m

2 stops

$994Air Canada

Wed, Jul 22 - Wed, Jul 29

6:39 pm - 8:40 pm

EVV

BRU

19h 01m

2 stops

10:50 am - 12:21 am

BRU

EVV

20h 31m

2 stops

$1,253American Airlines

Thu, Jun 18 - Thu, Jun 25

Turkish Airlines flights from Illinois to Belgium

Our best Turkish Airlines deals on Illinois to Belgium flight tickets

Turkish Airlines

Sep 16

ORD11:25 amChicago O'Hare Intl

15h 45m

1 stop

BRU10:10 amBrussels Bruxelles-National

Sep 22

BRU6:55 pmBrussels Bruxelles-National

21h 45m

1 stop

ORD9:40 amChicago O'Hare Intl

$682

Turkish Airlines

Sep 16

ORD11:25 amChicago O'Hare Intl

27h 00m

1 stop

BRU9:25 pmBrussels Bruxelles-National

Sep 22

BRU11:20 amBrussels Bruxelles-National

29h 20m

1 stop

ORD9:40 amChicago O'Hare Intl

$684

Turkish Airlines

Sep 27

ORD11:25 amChicago O'Hare Intl

15h 30m

1 stop

BRU9:55 amBrussels Bruxelles-National

Oct 8

BRU6:50 pmBrussels Bruxelles-National

21h 50m

1 stop

ORD9:40 amChicago O'Hare Intl

$688

British Airways flights from Illinois to Belgium

Our best British Airways deals on Illinois to Belgium flight tickets

British Airways

Sep 30

STL9:35 pmLambert-St Louis

29h 20m

1 stop

BRU9:55 amBrussels Bruxelles-National

Oct 5

BRU8:50 pmBrussels Bruxelles-National

29h 40m

1 stop

STL7:30 pmLambert-St Louis

$878

British Airways

Sep 30

STL9:35 pmLambert-St Louis

15h 50m

1 stop

BRU8:25 pmBrussels Bruxelles-National

Oct 5

BRU8:50 pmBrussels Bruxelles-National

33h 35m

2 stops

STL11:25 pmLambert-St Louis

$931

British Airways

Sep 20

STL9:40 pmLambert-St Louis

15h 20m

1 stop

BRU8:00 pmBrussels Bruxelles-National

Sep 27

BRU10:40 amBrussels Bruxelles-National

15h 50m

1 stop

STL7:30 pmLambert-St Louis

$946

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 9/30

7:15 pm-7:50 pm

1 stop17h 35m

Brussels Bruxelles-National

Sat 10/24

8:30 pm-5:45 pm

1 stop28h 15m

$676

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 9/16

11:25 am-10:10 am

1 stop15h 45m

Brussels Bruxelles-National

Tue 9/22

6:55 pm-9:40 am

1 stop21h 45m

$682

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 9/16

11:25 am-10:10 am

1 stop15h 45m

Brussels Bruxelles-National

Tue 9/22

11:20 am-9:40 am

1 stop29h 20m

$683

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Thu 9/3

7:25 pm-3:30 pm

2 stops13h 05m

Charleroi Brussels

Sat 9/12

4:50 pm-11:50 am

1 stop26h 00m

$804

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Tue 7/28

7:25 pm-10:55 pm

2 stops20h 30m

Charleroi Brussels

Sat 8/8

6:45 am-11:50 am

1 stop36h 05m

$827

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-9:55 am

1 stop29h 20m

Brussels Bruxelles-National

Mon 10/5

8:50 pm-7:30 pm

1 stop29h 40m

$878

Quickest round-trip

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-8:25 pm

1 stop15h 50m

Brussels Bruxelles-National

Mon 10/5

10:50 am-11:25 pm

2 stops19h 35m

$928

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 9/30

9:35 pm-8:25 pm

1 stop15h 50m

Brussels Bruxelles-National

Mon 10/5

8:50 pm-11:25 pm

2 stops33h 35m

$931

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 7/22

8:55 am-7:50 am

1 stop15h 55m

Brussels Bruxelles-National

Wed 7/29

9:55 am-6:42 pm

2 stops39h 47m

$994

EvansvilleBrussels

EVV - BRU

EVVBRU

Evansville Dress Regional

Thu 6/18

6:39 pm-8:40 pm

2 stops19h 01m

Brussels Bruxelles-National

Thu 6/25

10:50 am-12:21 am

2 stops20h 31m

$1,253

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 Belgium

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 Belgium?

In general, May is the cheapest month to fly from Illinois to Belgium. 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 Belgium during the month of May, then departing from Illinois during the month September is also very affordable. Most momondo users find prices during this month for around $251.

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

Our data shows that Tuesday is the least expensive day to fly to Belgium. Tickets to fly out on this day can be as low as $1,047. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,381. These prices are subject to change though, so be sure to set up a Price Alert for flights to Belgium.

What is the cheapest Illinois to Belgium flight route?

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

How far in advance should I book a flight from Illinois to Belgium?

You are more likely to see cheaper flights to Belgium from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around $759 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from Illinois for as low as $463 on momondo.

Can stopping save me money on Illinois to Belgium flights?

You could potentially save up to 71% on your flight if you consider stops on a Illinois to Belgium flight.

Cheap Illinois to Belgium flight deals and tips

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

Best Price Found	$638
Fastest flight time	8h 00m
Direct flights	Every day
Airports in Belgium	32 airports

The best one-way flight to Belgium from Illinois in the past 72 hours is $638. The best round-trip flight deal from Illinois to Belgium found on momondo in the last 72 hours is $1,389.

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

Direct flights go from Illinois to Belgium every day.

There are 32 airports in Belgium. From Illinois there are direct flights to Brussels Bruxelles-National (BRU).

Search flight deals

Frequently asked questions about flying from Illinois to Belgium

When did momondo last update prices for flights from Illinois to Belgium?
Prices for flights from Illinois to Belgium are refreshed on a daily basis.
How many operators does momondo search for flights from Illinois to Belgium?
As of May 2026, there are 8 operators available to choose from for flights from Illinois to Belgium.
How old do you have to be to fly from Illinois to Belgium?
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 Belgium.
What documentation or ID do you need to fly to Belgium?
The travel and health documents you'll need for your trip to Belgium 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 Belgium. 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 Belgium?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Belgium is Boeing 787 Dreamliner, representing 46.24% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 19.17%, Boeing 787-9 Dreamliner at 8.65%, and Boeing 787-8 Dreamliner at 7.89%.

Best airlines flying from Illinois to Belgium

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

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $298	Free Cancellation	Rating 7.4 1,769 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $418	Free Cancellation	Rating 7.0 650 reviews	Search Icelandair flights
Turkish Airlines	PriceFrom $419	Free Cancellation	Rating 7.4 4,344 reviews	Search Turkish Airlines flights
TAP AIR PORTUGAL	PriceFrom $444	Free Cancellation	Rating 7.2 2,230 reviews	Search TAP AIR PORTUGAL flights
Aer Lingus	PriceFrom $481	Free Cancellation	Rating 7.3 1,540 reviews	Search Aer Lingus flights
United Airlines	PriceFrom $586	Free Cancellation	Rating 7.4 9,681 reviews	Search United Airlines flights
Brussels Airlines	PriceFrom $752	Free Cancellation	Rating 7.3 405 reviews	Search Brussels Airlines flights
Lufthansa	PriceFrom $969	Free Cancellation	Rating 6.8 7,972 reviews	Search Lufthansa flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belgium from Illinois.

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

momondo does allow users to show only those flights to Belgium from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Illinois to Belgium 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 Belgium right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belgium from Illinois. 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 Belgium trip

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Flights to Brusselsfrom $492

Flights to Ostend

Cheap flights from Illinois to Belgium from $339

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 Belgium departing on 7/28. 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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Turkish Airlines flights from Illinois to Belgium

Our best Turkish Airlines deals on Illinois to Belgium flight tickets

British Airways flights from Illinois to Belgium

Our best British Airways deals on Illinois to Belgium flight tickets

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

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How to get the cheapest flight ticket from Illinois to Belgium

What is the cheapest month to fly to Belgium?

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

What is the cheapest Illinois to Belgium flight route?

How far in advance should I book a flight from Illinois to Belgium?

Can stopping save me money on Illinois to Belgium flights?

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

What airlines fly to Belgium?

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

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

Cheap Illinois to Belgium flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Belgium

Frequently asked questions about flying from Illinois to Belgium

Best airlines flying from Illinois to Belgium

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

Why use momondo?

An easier way to manage your Belgium 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

Popular cities in Belgium

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

Illinois flight routes

According to popular flight searches on momondo this year

Belgium flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Belgium

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

Cabin classes currently available on flights to Belgium

List of cabin classes available on flights landing in Belgium. Availability may vary depending on flight origin and airline.

Complete your trip to Belgium

Explore popular destinations other users love

According to popular flight searches on momondo this year