How does KAYAK find such low prices on flights from Illinois to Brussels?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Brussels. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Brussels?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Brussels?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Brussels?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$259 CHEAP FLIGHTS from Illinois to Brussels

KAYAK searches hundreds of travel sites at once for deals on flights to Brussels

...and more

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41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$459

Overall average: $677

Scandinavian Airlines

Sun 2/15Tue 2/24

ORD - BRU • 2 stops

Cheapest non-stop

$706

Typical prices: $1,107-$1,435

Multiple Airlines

Tue 2/24Tue 3/3

ORD - BRU • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Brussels!

Flight Deals

Cheap Flights from Illinois to Brussels

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Brussels that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Brussels

Sun, Feb 15 - Tue, Feb 24

7:10 pm - 10:50 am

ORD

BRU

32h 40m2 stops

11:30 am - 4:45 pm

BRU

ORD

36h 15m2 stops

$459Scandinavian Airlines

Sun, Feb 15 - Tue, Feb 24

7:10 pm - 10:50 am

ORD

BRU

32h 40m2 stops

11:30 am - 4:45 pm

BRU

ORD

36h 15m2 stops

$461Scandinavian Airlines

Thu, Feb 5 - Mon, Feb 9

12:44 pm - 7:15 am

STL

BRU

11h 31m1 stop

7:55 pm - 11:59 pm

BRU

STL

35h 04m2 stops

$470Multiple Airlines

Wed, Mar 18 - Wed, Mar 25

4:05 pm - 1:15 pm

STL

BRU

15h 10m2 stops

10:00 am - 2:42 pm

BRU

STL

34h 42m2 stops

$487United Airlines

Wed, Mar 18 - Wed, Mar 25

8:30 am - 7:15 am

STL

BRU

16h 45m1 stop

10:00 am - 2:42 pm

BRU

STL

34h 42m2 stops

$488United Airlines

Thu, Feb 5 - Sun, Feb 8

11:22 am - 8:05 am

STL

BRU

13h 43m1 stop

9:30 am - 11:59 pm

BRU

STL

21h 29m2 stops

$494Lufthansa

Tue, Feb 24 - Mon, Mar 2

7:41 am - 7:50 am

STL

BRU

17h 09m2 stops

11:15 am - 12:05 am

BRU

STL

19h 50m1 stop

$502Multiple Airlines

Wed, Mar 18 - Wed, Mar 25

11:28 am - 8:05 am

STL

BRU

14h 37m1 stop

10:10 am - 10:59 pm

BRU

STL

18h 49m1 stop

$504Lufthansa

Tue, Feb 10 - Tue, Feb 17

11:20 am - 7:50 am

STL

BRU

37h 30m2 stops

10:00 am - 9:05 pm

BRU

STL

18h 05m2 stops

$506Air Canada

Thu, Feb 5 - Sun, Feb 8

4:05 pm - 1:15 pm

STL

BRU

14h 10m2 stops

10:00 am - 3:29 pm

BRU

STL

36h 29m2 stops

$507Air Canada

Useful Info

Cheapest flight	$259

Flight from Chicago O'Hare Airport to Brussels Airport

How does KAYAK find such low prices on flights from Illinois to Brussels?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Brussels.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Brussels?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Brussels?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Brussels?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Brussels

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Illinois

First Class flights to Brussels

Business Class flights to Brussels

Prem Econ Class flights to Brussels

Economy Class flights to Brussels

$259 Find Cheap Flights from Illinois to Brussels

KAYAK searches hundreds of travel sites at once for deals on flights to Brussels

Everything you should know

Cheap Flights from Illinois to Brussels

Recent round-trip flight deals from Illinois to Brussels

Recent one-way flight deals from Illinois to Brussels

Recent last minute flight deals from Illinois to Brussels

Recent direct flight deals from Illinois to Brussels

Good to know

FAQs for booking flights from Illinois to Brussels

How does KAYAK find such low prices on flights from Illinois to Brussels?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Brussels.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Brussels?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Brussels?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Brussels?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Brussels

Cabin class types available on flights to Illinois

Complete your trip to Brussels with a hotel stay or car rental

Find direct flights for Brussels

Flights to other popular destinations

Flights from domestic origins to Brussels

Choose which airport to fly into in Brussels

Find deals for your return flight