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Belgium

$223+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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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 October 16, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/16. 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.
Wed 12/107:00 amORD - BRU
2 stops24h 30mScandinavian Airlines
Sun 12/1410:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 10/16$447
This FlightHub deal was found by Cheapflights users on 10/16. 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.
Tue 11/187:10 amORD - BRU
2 stops24h 20mScandinavian Airlines
Sun 11/2310:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 10/16$450
This FlightHub deal was found by Cheapflights users on 10/14. 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 stops28h 25mScandinavian Airlines
Deal found 10/14$455
This Cheapflightsfares deal was found by Cheapflights users on 10/15. 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 11/287:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
Sun 12/710:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 10/15$457
This CrystalTravel deal was found by Cheapflights users on 10/15. 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.
Sun 11/167:20 pmORD - BRU
1 stop17h 30mScandinavian Airlines
Sun 11/2310:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 10/15$459
This oojo deal was found by Cheapflights users on 10/14. 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 11/57:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
Tue 12/97:20 pmBRU - ORD
2 stops28h 25mScandinavian Airlines
Deal found 10/14$461
This Scandinavian Airlines deal was found by Cheapflights users on 10/15. 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 11/147:00 amORD - BRU
2 stops19h 40mScandinavian Airlines
Sun 11/2310:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 10/15$466
This United Airlines deal was found by Cheapflights users on 10/14. 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 11/121:10 pmSTL - BRU
2 stops17h 05mUnited Airlines
Thu 11/2710:00 amBRU - STL
2 stops35h 24mUnited Airlines
Deal found 10/14$530
This Air Canada deal was found by Cheapflights users on 10/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:05 pmSTL - BRU
2 stops14h 10mAir Canada
Thu 11/2710:00 amBRU - STL
2 stops35h 24mAir Canada
Deal found 10/15$532
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Sat 11/2911:05 amSTL - BRU
2 stops19h 10mUnited Airlines
Sat 12/611:15 amBRU - STL
1 stop13h 14mUnited Airlines
Deal found 10/15$553
This deal was found by Cheapflights users on 10/16. 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.
Thu 11/1311:49 amSTL - BRU
1 stop13h 16mUnited Airlines
Wed 11/1910:10 amBRU - STL
1 stop12h 39mUnited Airlines
Deal found 10/16$556
This Mytrip deal was found by Cheapflights users on 10/15. 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 12/43:50 pmORD - CRL
1 stop13h 45mMultiple Airlines
Fri 12/121:00 pmCRL - ORD
1 stop11h 55mMultiple Airlines
Deal found 10/15$559

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 October 16, 2025.

Round-trip from

$420
(Flysmarter)

One-way from

$223
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$621

Good round-trip deal

$1,002 or less

Good one-way deal

$751 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 ($275 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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.
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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 October 16, 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

Thu 11/6

7:20 pm-6:40 pm

2 stops16h 20m

Brussels Bruxelles-National

Mon 11/10

10:20 am-4:45 pm

1 stop13h 25m

$524

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 3/20

8:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Wed 3/25

10:20 am-5:45 pm

1 stop13h 25m

$529

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 4/13

7:15 pm-2:35 pm

1 stop12h 20m

Brussels Bruxelles-National

Tue 4/28

8:30 pm-4:10 pm

1 stop26h 40m

$529

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 11/29

11:05 am-1:15 pm

2 stops19h 10m

Brussels Bruxelles-National

Sat 12/6

10:00 am-3:40 pm

2 stops36h 40m

$530

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

1:10 pm-1:15 pm

2 stops17h 05m

Brussels Bruxelles-National

Thu 11/27

10:00 am-2:24 pm

2 stops35h 24m

$530

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 12/10

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Mon 2/9

10:00 am-12:29 pm

2 stops33h 29m

$532

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 12/10

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Mon 2/9

10:00 am-12:29 pm

2 stops33h 29m

$532

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 11/12

4:05 pm-1:15 pm

2 stops14h 10m

Brussels Bruxelles-National

Thu 11/27

10:00 am-2:24 pm

2 stops35h 24m

$532

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 11/13

10:40 am-9:40 am

2 stops16h 00m

Brussels Bruxelles-National

Thu 11/20

10:20 am-4:45 pm

1 stop13h 25m

$536

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 3/19

8:20 pm-2:30 pm

1 stop12h 10m

Brussels Bruxelles-National

Mon 3/30

10:20 am-4:10 pm

1 stop12h 50m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 60 results
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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 October 16, 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 October 16, 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 14h 10m. There are 4393 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

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Alternative routes for Illinois to Belgium

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Illinois to Belgium

Discover the top 9 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$310Average$490FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$428Average$581FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$492Average$807FlexibilityNo cancel feeOn-time77%
KLMCheapest$506Average$828FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$581Average$780FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$590Average$1,116FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$744Average$890FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$754Average$1,306FlexibilityNo cancel feeOn-time76%

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