HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belgium

$259+ Cheap flights from Illinois to Belgium

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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Belgium with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Illinois to Belgium

Cheapest flights from Illinois to Belgium
Explore the most affordable flight options available from Illinois to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 11/4. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:10 amORD - BRU
2 stops19h 30mScandinavian Airlines
Fri 12/1210:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 11/4$421
This Expedia deal was found by Cheapflights users on 11/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:30 pmORD - BRU
1 stop10h 25mIcelandair
Thu 12/1112:50 pmBRU - ORD
1 stop11h 30mIcelandair
Deal found 11/4$426
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Sat 12/67:20 pmORD - BRU
2 stops56h 30mScandinavian Airlines
Tue 12/97:20 pmBRU - ORD
2 stops52h 25mScandinavian Airlines
Deal found 11/4$455
This oojo deal was found by Cheapflights users on 11/4. 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 11/288:15 pmORD - BRU
1 stop20h 35mTAP AIR PORTUGAL
Sun 12/76:00 amBRU - ORD
1 stop15h 45mTAP AIR PORTUGAL
Deal found 11/4$457
This oojo deal was found by Cheapflights users on 11/5. 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 11/127:10 pmORD - BRU
1 stop32h 50mTAP AIR PORTUGAL
Wed 11/196:00 amBRU - ORD
1 stop16h 00mTAP AIR PORTUGAL
Deal found 11/5$461
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Fri 11/287:20 pmORD - BRU
2 stops39h 55mScandinavian Airlines
Sun 12/78:30 pmBRU - ORD
1 stop27h 15mScandinavian Airlines
Deal found 11/4$464
This oojo deal was found by Cheapflights users on 11/5. 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.
Sun 11/307:20 pmORD - BRU
2 stops18h 35mScandinavian Airlines
Wed 12/311:30 amBRU - ORD
2 stops36h 15mScandinavian Airlines
Deal found 11/5$494
This Mytrip deal was found by Cheapflights users on 11/4. 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.
Tue 12/212:50 pmORD - CRL
3 stops20h 05mMultiple Airlines
Tue 12/98:40 amCRL - ORD
2 stops16h 45mMultiple Airlines
Deal found 11/4$602
This Mytrip deal was found by Cheapflights users on 11/3. 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.
Sun 11/163:35 pmORD - CRL
2 stops23h 45mMultiple Airlines
Tue 11/256:20 amCRL - ORD
2 stops20h 40mMultiple Airlines
Deal found 11/3$603
This Mytrip deal was found by Cheapflights users on 11/4. 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.
Thu 12/48:00 amORD - CRL
3 stops31h 30mMultiple Airlines
Thu 12/118:55 amCRL - ORD
2 stops18h 10mMultiple Airlines
Deal found 11/4$619
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/123:14 pmSTL - BRU
2 stops15h 01mUnited Airlines
Thu 11/2710:00 amBRU - STL
2 stops40h 16mUnited Airlines
Deal found 11/4$629
This FlightHub deal was found by Cheapflights users on 11/5. 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.
Thu 11/273:15 pmSTL - BRU
2 stops35h 25mScandinavian Airlines
Thu 12/43:10 pmBRU - STL
2 stops39h 32mScandinavian Airlines
Deal found 11/5$644

Cheap flight deals from Illinois to Belgium

Keep the following information in mind while searching for Illinois to Belgium flight deals. Data was last updated November 6, 2025.

Round-trip from

$391
(CrystalTravel)

One-way from

$259
(Mytrip)

Popular in

June

Cheapest in

April

Average price

$878

Good round-trip deal

$991 or less

Good one-way deal

$805 or less
From Illinois to Belgium
Search Deals
One-way flight from Illinois to Belgium
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($281 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Belgium.
Search Deals
Price to beat on a one-way flight from Illinois to Belgium.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Belgium 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 November 6, 2025.
Use the filters below to find and compare flights from Illinois to Belgium that are best for you.

Fly from

Illinois

Fly to

Belgium

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 2/24

10:36 am-9:40 am

2 stops16h 04m

Brussels Bruxelles-National

Thu 3/5

7:15 pm-4:55 pm

1 stop28h 40m

$438

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 12/1

7:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Fri 12/5

10:20 am-4:45 pm

1 stop13h 25m

$457

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 3/19

7:30 pm-11:55 am

1 stop10h 25m

Brussels Bruxelles-National

Fri 4/3

1:50 pm-6:15 pm

1 stop11h 25m

$458

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 2/11

6:25 pm-9:40 am

2 stops32h 15m

Brussels Bruxelles-National

Sat 2/21

10:20 am-4:45 pm

1 stop13h 25m

$459

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sat 3/7

7:01 am-9:40 am

2 stops19h 39m

Brussels Bruxelles-National

Fri 3/13

7:20 pm-5:45 pm

2 stops28h 25m

$475

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sat 2/28

10:36 am-9:40 am

2 stops16h 04m

Brussels Bruxelles-National

Mon 3/9

10:20 am-5:45 pm

1 stop13h 25m

$478

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 3/1

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Thu 3/5

10:20 am-4:45 pm

1 stop13h 25m

$483

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 2/16

7:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Mon 2/23

10:20 am-4:45 pm

1 stop13h 25m

$499

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 2/15

7:10 pm-2:30 pm

1 stop12h 20m

Brussels Bruxelles-National

Sun 2/22

10:20 am-4:55 pm

1 stop13h 35m

$499

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 3/17

10:10 am-9:40 am

2 stops17h 30m

Brussels Bruxelles-National

Mon 4/6

6:55 pm-4:10 pm

2 stops52h 15m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 48 results
1
2
3
...
5

Best time to book a flight from Illinois to Belgium

Have a flexible travel schedule? Discover the best time to fly to Belgium 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 Belgium

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

Currently, September is the cheapest month in which you can book a flight from Illinois to Belgium (average of $293). Flying from Illinois to Belgium in August is currently the most expensive (average of $496). 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 BE?

Find hourly flight availability from Illinois to Belgium. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 43% on flights from Illinois to Belgium by exploring options for tickets in the evening.

What is the cheapest day to fly from Illinois to Belgium?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Belgium. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Belgium flight should consider departing on Wednesday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Illinois to Belgium

Explore weekly flight availability from Illinois to Belgium. 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 November 6, 2025.

The most flights from USIL to BE0 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 Belgium. 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 Belgium?

    Departing from Illinois to Belgium will take you 10h 25m. There are 4145 mi between Illinois and Belgium. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Belgium 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 Belgium?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Belgium (average of $293). Flying from Illinois to Belgium in August is currently the most expensive (average of $496). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Belgium

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Istanbul flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
Newark to Orly flights
Boston to Heathrow flights
LaGuardia to Heathrow flights
John F Kennedy Intl to Gatwick flights
John F Kennedy Intl to London City flights
Newark to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Orly flights
Newark to Gatwick flights
Miami to Madrid flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Madrid flights
LaGuardia to Gatwick flights
Los Angeles to Heathrow flights
Los Angeles to Charles de Gaulle flights
Newark to Madrid flights
LaGuardia to Charles de Gaulle flights
John F Kennedy Intl to Stansted flights
San Francisco to Heathrow flights
John F Kennedy Intl to Malpensa flights
O'Hare Intl to Heathrow flights
John F Kennedy Intl to Lisbon flights
Dallas/Fort Worth to Heathrow flights
Boston to Charles de Gaulle flights
Dulles Intl to Charles de Gaulle flights
Newark to London City flights
John F Kennedy Intl to Barcelona-El Prat flights
Newark to Malpensa flights
John F Kennedy Intl to Luton flights
Newark to Barcelona-El Prat flights
O'Hare Intl to Charles de Gaulle flights
Baltimore to Heathrow flights
Dulles Intl to Madrid flights
Newark to Dublin flights
Seattle to Heathrow flights
San Francisco to Charles de Gaulle flights
Newark to Lisbon flights
John F Kennedy Intl to Dublin flights
Dallas/Fort Worth to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Amsterdam flights
Newark to Athens flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Boston to Dublin flights
Newark to Amsterdam flights
Boston to Gatwick flights

Top 8 airlines flying from Illinois to Belgium

Discover the top 8 airlines that operate flights from Illinois to Belgium. 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$310Average$489FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$428Average$588FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$492Average$807FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$536Average$775FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$639Average$1,043FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$725Average$1,641FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$744Average$890FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2025 Cheapflights