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$233+ Cheap flights from Illinois to Brussels

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Illinois to Brussels

Cheapest flights from Illinois to Brussels
Explore the most affordable flight options available from Illinois to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:15 pm
ORD
-
BRU
1 stop12h 20m
Scandinavian Airlines
Wed 4/295:45 am
BRU
-
ORD
1 stop17h 25m
Scandinavian Airlines
Deal found 2/1$450
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:15 pm
ORD
-
BRU
1 stop12h 20m
Scandinavian Airlines
Sun 4/263:15 pm
BRU
-
ORD
1 stop31h 55m
Scandinavian Airlines
Deal found 2/2$460
This CrystalTravel deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:20 pm
ORD
-
BRU
1 stop12h 10m
Scandinavian Airlines
Sat 3/710:20 am
BRU
-
ORD
1 stop13h 25m
Scandinavian Airlines
Deal found 2/1$464
This CrystalTravel deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:20 pm
ORD
-
BRU
1 stop12h 10m
Scandinavian Airlines
Mon 3/910:20 am
BRU
-
ORD
1 stop13h 25m
Scandinavian Airlines
Deal found 2/2$465
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/24:05 pm
STL
-
BRU
2 stops14h 10m
Multiple Airlines
Wed 3/117:00 am
BRU
-
STL
1 stop13h 55m
Multiple Airlines
Deal found 2/2$470
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:20 pm
ORD
-
BRU
1 stop12h 10m
Scandinavian Airlines
Mon 11/2310:20 am
BRU
-
ORD
1 stop13h 25m
Scandinavian Airlines
Deal found 2/2$470
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:20 pm
ORD
-
BRU
1 stop12h 10m
Scandinavian Airlines
Mon 3/910:20 am
BRU
-
ORD
1 stop13h 25m
Scandinavian Airlines
Deal found 2/2$471
This Flighttix deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:55 pm
STL
-
BRU
2 stops29h 55m
Air Canada
Wed 3/1110:00 am
BRU
-
STL
2 stops34h 42m
Air Canada
Deal found 2/2$472
This CrystalTravel deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:20 pm
ORD
-
BRU
1 stop16h 15m
Scandinavian Airlines
Wed 3/117:20 pm
BRU
-
ORD
2 stops28h 25m
Scandinavian Airlines
Deal found 2/2$472
This Mytrip deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:20 pm
ORD
-
BRU
1 stop12h 10m
Scandinavian Airlines
Thu 3/1910:20 am
BRU
-
ORD
1 stop13h 25m
Scandinavian Airlines
Deal found 2/1$475
This FlightHub deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/88:20 pm
ORD
-
BRU
2 stops32h 30m
Scandinavian Airlines
Wed 3/1111:30 am
BRU
-
ORD
2 stops36h 15m
Scandinavian Airlines
Deal found 2/2$477
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/182:07 pm
PAH
-
BRU
2 stops17h 08m
United Airlines
Wed 3/2510:00 am
BRU
-
PAH
2 stops33h 27m
United Airlines
Deal found 2/1$482

Find flight deals from Illinois to Brussels

Keep the following information in mind while searching for Illinois to Brussels flight deals. Data was last updated February 3, 2026.

Round-trip from

$449
(oojo)

One-way from

$233
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$645
From Illinois to Brussels
Search Deals
One-way flight from Illinois to Brussels
Search Deals
Highest demand for flights based on searches. 31% potential increase in price ($362 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Brussels that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Illinois to Brussels that are best for you.

Fly from

Illinois

Fly to

Brussels

Route

Depart

Return

Price

PaducahBrussels

PAH - BRU

PAHBRU

Paducah Barkley Regional

Wed 3/18

2:07 pm-1:15 pm

2 stops17h 08m

Brussels Bruxelles-National

Wed 3/25

10:00 am-1:27 pm

2 stops33h 27m

$482

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 3/17

1:14 pm-1:15 pm

2 stops18h 01m

Brussels Bruxelles-National

Tue 3/24

10:00 am-6:00 pm

2 stops38h 00m

$487

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/18

6:25 am-7:55 am

1 stop19h 30m

Brussels Bruxelles-National

Wed 3/25

10:00 am-6:00 pm

2 stops38h 00m

$489

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 2/23

7:20 pm-6:35 pm

1 stop16h 15m

Brussels Bruxelles-National

Fri 2/27

10:20 am-4:45 pm

1 stop13h 25m

$503

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 3/3

3:15 pm-1:15 pm

2 stops15h 00m

Brussels Bruxelles-National

Sun 3/8

10:10 am-7:14 pm

1 stop15h 04m

$507

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sun 3/1

8:17 am-1:15 pm

2 stops21h 58m

Brussels Bruxelles-National

Sun 3/8

10:10 am-9:07 pm

1 stop16h 57m

$507

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 3/8

8:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Wed 3/18

10:20 am-5:45 pm

1 stop13h 25m

$533

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 3/16

8:20 pm-6:40 pm

2 stops16h 20m

Brussels Bruxelles-National

Thu 3/19

10:20 am-9:49 pm

2 stops17h 29m

$579

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 5/6

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Tue 5/26

10:20 am-4:10 pm

1 stop12h 50m

$622

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Sun 5/10

9:00 pm-9:25 pm

1 stop17h 25m

Charleroi Brussels

Thu 5/21

7:05 am-5:50 pm

2 stops17h 45m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Brussels

What is the cheapest month to book a flight from Illinois to Brussels?

Currently, September is the cheapest month in which you can book a flight from Illinois to Brussels (average of $293). Flying from Illinois to Brussels in February is currently the most expensive (average of $486). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to BRU?

Find hourly flight availability from Illinois to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 3, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Brussels as you normally would.

Weekly flight availability from Illinois to Brussels

Explore weekly flight availability from Illinois to Brussels. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 3, 2026.

The most flights from USIL to BR1 are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Brussels. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Brussels?

    United Airlines, Scandinavian Airlines, and Delta can get you from Illinois to Brussels in just under 13h 13m. Your travel time can differ by up to 3h 55m. The distance between Illinois and Brussels is about 4148 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Illinois to Brussels one-way?

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as $263. Users have also found prices from $264 and $316 on Scandinavian Airlines and TAP AIR PORTUGAL, respectively.

  • What are the most popular routes from Illinois to Brussels?

    The most popular flight routes from Illinois to Brussels are Chicago O'Hare Intl - Brussels Bruxelles-National, Chicago O'Hare Intl - Charleroi Brussels and Chicago Midway - Brussels Bruxelles-National.

  • What are the most reliable airlines from Illinois to Brussels?

    Consider Air Canada (33%), Austrian Airlines (33%) or Brussels Airlines (33%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Brussels.

  • What are the cheapest flights from Illinois to Brussels?

    Looking at all options, your cheapest flight can be booked for $486. While the most popular route (Chicago O'Hare Intl - Brussels Bruxelles-National) can be booked for $450 on average, our data indicates $1,202 when flying from Illinois to Brussels.

  • Can I find deals for flights from Illinois to Brussels that include hotel bookings?

    Yes. In addition to deals on Illinois to Brussels flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Brussels?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Brussels.

  • Can I find deals for business class flights from Illinois to Brussels?

    Yes. Cheapflights offers flight deals from Illinois to Brussels by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Brussels?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Brussels (average of $293). Flying from Illinois to Brussels in February is currently the most expensive (average of $486). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Illinois to Brussels

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Bruxelles-National flights
Newark to Bruxelles-National flights
O'Hare Intl to Bruxelles-National flights
Dulles Intl to Bruxelles-National flights
LaGuardia to Bruxelles-National flights
John F Kennedy Intl to Charleroi Brussels flights
Reagan-National to Bruxelles-National flights
Baltimore to Bruxelles-National flights
Boston to Bruxelles-National flights
Atlanta to Bruxelles-National flights
Seattle to Bruxelles-National flights
Newark to Charleroi Brussels flights
Los Angeles to Bruxelles-National flights
Hobby to Bruxelles-National flights
San Francisco to Bruxelles-National flights
Dallas/Fort Worth to Bruxelles-National flights
O'Hare Intl to Charleroi Brussels flights
Midway to Bruxelles-National flights
Charlotte to Bruxelles-National flights
Austin to Bruxelles-National flights
Miami to Bruxelles-National flights
Philadelphia to Bruxelles-National flights
Dulles Intl to Charleroi Brussels flights
George Bush Intcntl to Bruxelles-National flights
Detroit to Bruxelles-National flights
Orlando to Bruxelles-National flights
Tampa to Bruxelles-National flights
Minneapolis to Bruxelles-National flights
Cincinnati to Bruxelles-National flights
Love Field to Bruxelles-National flights
Denver to Bruxelles-National flights
Nashville to Bruxelles-National flights
Boston to Charleroi Brussels flights
Portland to Bruxelles-National flights
Santa Ana to Bruxelles-National flights
Ontario to Bruxelles-National flights
Raleigh to Bruxelles-National flights
Columbus to Bruxelles-National flights
San Antonio to Bruxelles-National flights
Cleveland to Bruxelles-National flights
Omaha to Bruxelles-National flights
Los Angeles to Charleroi Brussels flights
Fort Lauderdale to Bruxelles-National flights
San Diego to Bruxelles-National flights
Tulsa to Bruxelles-National flights
San Jose to Bruxelles-National flights
Indianapolis to Bruxelles-National flights
Oakland to Bruxelles-National flights
St. Louis to Bruxelles-National flights

Top 8 airlines flying from Illinois to Brussels

Discover the top 8 airlines that operate flights from Illinois to Brussels. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$293Average$475FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$418Average$610FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$445Average$463FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$492Average$793FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$531Average$695FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$589Average$1,039FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$752Average$1,745FlexibilityNo cancel feeOn-timeN/A

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