HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belgium

$260+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Jan 6 — Jan 131
Tue 1/6
Tue 1/13
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.

Cheap 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 December 7, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:20 pmORD - BRU
1 stop17h 30mScandinavian Airlines
Sun 2/157:45 pmBRU - ORD
2 stops28h 00mScandinavian Airlines
Deal found 12/5$647
This Cheapflightsfares deal was found by Cheapflights users on 12/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:30 pmORD - BRU
1 stop10h 25mIcelandair
Sun 2/1512:50 pmBRU - ORD
1 stop11h 30mIcelandair
Deal found 12/5$675
This Cheapflightsfares deal was found by Cheapflights users on 12/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
Sun 1/116:55 pmBRU - ORD
2 stops28h 50mScandinavian Airlines
Deal found 12/5$714
This deal was found by Cheapflights users on 12/6. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:50 pmORD - BRU
1 stop12h 00mAir Canada
Mon 12/2210:00 amBRU - ORD
1 stop11h 55mAir Canada
Deal found 12/6$867
This Cheapflightsfares deal was found by Cheapflights users on 12/4. 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 Cheapflightsfares 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 12/4$948
This Mytrip deal was found by Cheapflights users on 12/4. 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.
Fri 12/58:15 pmORD - CRL
2 stops17h 30mMultiple Airlines
Fri 12/126:30 amCRL - ORD
2 stops34h 35mMultiple Airlines
Deal found 12/4$983
This Mytrip deal was found by Cheapflights users on 12/6. 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.
Wed 12/102:00 pmORD - CRL
2 stops23h 55mMultiple Airlines
Fri 12/126:40 amCRL - ORD
2 stops34h 25mMultiple Airlines
Deal found 12/6$1,067
This Kiwi.com deal was found by Cheapflights users on 12/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:50 pmORD - CRL
1 stop13h 55mMultiple Airlines
Sun 1/118:50 amCRL - ORD
2 stops30h 28mMultiple Airlines
Deal found 12/5$1,126
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/143:50 pmORD - CRL
1 stop13h 55mMultiple Airlines
Sat 12/209:10 pmCRL - ORD
2 stops27h 10mMultiple Airlines
Deal found 12/6$1,262
This Mytrip deal was found by Cheapflights users on 12/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:50 pmORD - CRL
3 stops22h 30mMultiple Airlines
Thu 12/183:55 pmCRL - ORD
2 stops25h 10mMultiple Airlines
Deal found 12/5$1,332
This Mytrip deal was found by Cheapflights users on 12/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:34 amORD - CRL
3 stops20h 01mMultiple Airlines
Sat 2/281:15 pmCRL - ORD
2 stops32h 30mMultiple Airlines
Deal found 12/5$1,370
This Mytrip deal was found by Cheapflights users on 12/6. 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.
Fri 12/2610:00 amORD - CRL
3 stops22h 50mMultiple Airlines
Tue 12/309:25 pmCRL - ORD
2 stops24h 35mMultiple Airlines
Deal found 12/6$1,401

Find flight deals from Illinois to Belgium

Keep the following information in mind while searching for Illinois to Belgium flight deals. Data was last updated December 7, 2025.

Round-trip from

$433
(Scandinavian Airlines)

One-way from

$260
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$726

Good round-trip deal

$914 or less

Good one-way deal

$493 or less
From Illinois to Belgium
Search Deals
One-way flight from Illinois to Belgium
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($310 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 7, 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 2/3

10:40 am-9:40 am

2 stops16h 00m

Brussels Bruxelles-National

Wed 2/11

7:20 pm-4:45 pm

2 stops28h 25m

$445

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 1/20

7:05 am-9:40 am

2 stops19h 35m

Brussels Bruxelles-National

Tue 1/27

7:20 pm-4:45 pm

2 stops28h 25m

$445

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 1/16

1:15 pm-8:55 am

1 stop12h 40m

Brussels Bruxelles-National

Wed 1/21

6:45 am-5:43 pm

2 stops17h 58m

$451

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 1/19

7:01 am-9:40 am

2 stops19h 39m

Brussels Bruxelles-National

Mon 1/26

10:20 am-4:45 pm

1 stop13h 25m

$467

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 1/29

4:05 pm-1:15 pm

2 stops38h 10m

Brussels Bruxelles-National

Tue 2/3

10:00 am-2:30 pm

2 stops35h 30m

$486

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 1/29

4:05 pm-8:55 am

2 stops33h 50m

Brussels Bruxelles-National

Tue 2/3

10:00 am-2:30 pm

2 stops35h 30m

$486

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 2/6

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Tue 2/10

10:00 am-2:30 pm

2 stops35h 30m

$486

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Fri 2/6

6:30 am-8:55 am

1 stop19h 25m

Brussels Bruxelles-National

Tue 2/10

10:00 am-11:02 am

2 stops32h 02m

$488

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

$500

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 1/20

3:11 pm-1:15 pm

2 stops15h 04m

Brussels Bruxelles-National

Tue 1/27

10:10 am-5:43 pm

1 stop14h 33m

$504

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/5

Showing 1-10 of 60 results
1
2
3
...
6

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 December 7, 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 December 7, 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 12h 40m. There are 4393 mi between Illinois and Belgium. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from Illinois to Belgium are Scandinavian Airlines ($214), TAP AIR PORTUGAL ($316), and United Airlines ($489).

  • 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
John F Kennedy Intl to Charles de Gaulle flights
Newark to Heathrow flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to London City flights
Newark to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
John F Kennedy Intl to Gatwick flights
Newark to Orly flights
John F Kennedy Intl to Orly flights
Boston to Heathrow flights
Dulles Intl to Heathrow flights
LaGuardia to Gatwick flights
Los Angeles to Heathrow flights
Newark to Gatwick flights
John F Kennedy Intl to Istanbul flights
Miami to Madrid flights
LaGuardia to Charles de Gaulle flights
John F Kennedy Intl to Lisbon flights
Newark to Lisbon flights
John F Kennedy Intl to Stansted flights
Los Angeles to Charles de Gaulle flights
John F Kennedy Intl to Malpensa flights
San Francisco to Heathrow flights
Newark to Madrid flights
O'Hare Intl to Charles de Gaulle flights
Newark to Barcelona-El Prat flights
John F Kennedy Intl to Madrid flights
Newark to Athens flights
Newark to Malpensa flights
O'Hare Intl to Heathrow flights
Boston to Charles de Gaulle flights
Baltimore to Heathrow flights
John F Kennedy Intl to Barcelona-El Prat flights
John F Kennedy Intl to Dublin flights
Dallas/Fort Worth to Heathrow flights
John F Kennedy Intl to Athens flights
Dulles Intl to Charles de Gaulle flights
Newark to Dublin flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Seattle to Heathrow flights
Newark to Frankfurt flights
John F Kennedy Intl to Luton flights
Dallas/Fort Worth to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Zurich flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
San Francisco to Charles de Gaulle flights
John F Kennedy Intl to Amsterdam flights
Boston to Leonardo da Vinci/Fiumicino flights

Top 7 airlines flying from Illinois to Belgium

Discover the top 7 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 December 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$298Average$487FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$428Average$605FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$445Average$463FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$492Average$793FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$536Average$751FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$639Average$1,059FlexibilityNo cancel feeOn-time69%

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
©2025 Cheapflights