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Belgium

$282+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

This oojo deal was found by Cheapflights users on 11/25. 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 12/37:10 pmORD - BRU
1 stop14h 55mTAP AIR PORTUGAL
Wed 12/106:00 amBRU - ORD
1 stop16h 00mTAP AIR PORTUGAL
Deal found 11/25$459
This FlightHub deal was found by Cheapflights users on 11/24. 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 11/308:25 pmORD - BRU
1 stop20h 25mTAP AIR PORTUGAL
Sat 12/65:55 pmBRU - ORD
1 stop27h 50mTAP AIR PORTUGAL
Deal found 11/24$471
This Kiwi.com deal was found by Cheapflights users on 11/24. 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.
Wed 12/37:10 pmORD - BRU
1 stop14h 55mTAP AIR PORTUGAL
Sun 12/76:00 amBRU - ORD
1 stop15h 45mTAP AIR PORTUGAL
Deal found 11/24$482
This Kiwi.com deal was found by Cheapflights users on 11/24. 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.
Fri 11/288:15 pmORD - BRU
1 stop13h 50mTAP AIR PORTUGAL
Sat 12/65:55 pmBRU - ORD
1 stop27h 50mTAP AIR PORTUGAL
Deal found 11/24$501
This FlightHub deal was found by Cheapflights users on 11/26. 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 12/77:20 pmORD - BRU
1 stop17h 30mScandinavian Airlines
Mon 12/229:40 pmBRU - ORD
2 stops50h 05mScandinavian Airlines
Deal found 11/26$534
This Scandinavian Airlines deal was found by Cheapflights users on 11/23. 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.
Sat 12/67:20 pmORD - BRU
2 stops16h 45mScandinavian Airlines
Tue 12/97:20 pmBRU - ORD
2 stops28h 25mScandinavian Airlines
Deal found 11/23$561
This oojo deal was found by Cheapflights users on 11/24. 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.
Mon 12/87:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
Thu 12/118:30 pmBRU - ORD
1 stop27h 15mScandinavian Airlines
Deal found 11/24$571
This Cheapflightsfares deal was found by Cheapflights users on 11/25. 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 12/37:00 amORD - BRU
2 stops19h 40mScandinavian Airlines
Wed 12/1010:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 11/25$592
This FlightHub deal was found by Cheapflights users on 11/24. 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.
Wed 12/317:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
Mon 4/139:10 pmBRU - ORD
2 stops50h 00mScandinavian Airlines
Deal found 11/24$594
This CrystalTravel deal was found by Cheapflights users on 11/26. 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.
Fri 12/57:20 pmORD - BRU
1 stop12h 10mScandinavian Airlines
Sun 12/76:55 pmBRU - ORD
2 stops28h 50mScandinavian Airlines
Deal found 11/26$598
This United Airlines deal was found by Cheapflights users on 11/24. 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.
Mon 12/155:27 pmSTL - BRU
2 stops31h 23mUnited Airlines
Thu 12/2510:00 amBRU - STL
2 stops38h 54mUnited Airlines
Deal found 11/24$710
This Mytrip deal was found by Cheapflights users on 11/26. 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 12/57:40 pmORD - CRL
2 stops18h 05mMultiple Airlines
Sun 12/77:50 amCRL - ORD
2 stops17h 05mMultiple Airlines
Deal found 11/26$729

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 26, 2025.

Round-trip from

$384
(CrystalTravel)

One-way from

$282
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$860

Good round-trip deal

$959 or less

Good one-way deal

$580 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 ($276 potential increase over avg. RT price).
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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
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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 November 26, 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

Wed 4/8

7:25 pm-12:50 pm

1 stop10h 25m

Brussels Bruxelles-National

Thu 4/23

1:50 pm-6:15 pm

1 stop11h 25m

$428

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 3/3

10:11 am-9:40 am

2 stops16h 29m

Brussels Bruxelles-National

Tue 3/24

7:20 pm-5:45 pm

2 stops28h 25m

$433

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 2/6

7:05 am-9:40 am

2 stops19h 35m

Brussels Bruxelles-National

Fri 2/13

10:20 am-4:45 pm

1 stop13h 25m

$436

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/8

10:40 am-9:40 am

2 stops16h 00m

Brussels Bruxelles-National

Wed 4/22

9:10 pm-4:10 pm

2 stops50h 00m

$441

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 2/6

7:05 am-9:40 am

2 stops19h 35m

Brussels Bruxelles-National

Sun 2/15

7:45 pm-4:45 pm

2 stops28h 00m

$443

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 2/4

7:20 pm-10:50 am

2 stops32h 30m

Brussels Bruxelles-National

Sun 2/8

3:10 pm-4:45 pm

1 stop32h 35m

$447

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 3/25

7:35 pm-9:40 am

2 stops32h 05m

Brussels Bruxelles-National

Thu 4/9

11:20 am-4:10 pm

2 stops35h 50m

$453

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Tue 3/24

10:40 am-9:40 am

2 stops17h 00m

Brussels Bruxelles-National

Sun 4/12

9:20 pm-4:10 pm

2 stops25h 50m

$455

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 3/25

7:35 pm-9:40 am

2 stops32h 05m

Brussels Bruxelles-National

Mon 4/6

6:55 pm-4:10 pm

2 stops52h 15m

$456

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

$457

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 56 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 November 26, 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 26, 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.

  • 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 ($361), Lufthansa ($560), and United Airlines ($569).

  • 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

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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 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$298Average$487FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$428Average$597FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$445Average$463FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$492Average$793FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$536Average$758FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$639Average$1,048FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$1,020Average$1,641FlexibilityNo cancel feeOn-time76%

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