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$304+ 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Round-trip from

$460
(oojo)

One-way from

$304
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$520

Good round-trip deal

$1,009 or less

Good one-way deal

$761 or less
From Illinois to Belgium
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One-way flight from Illinois to Belgium
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Highest demand for flights based on searches. 17% potential increase in price ($177 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Illinois to Belgium.
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Price to beat on a one-way flight from Illinois to Belgium.
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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 February 20, 2025.

This Turkish Airlines deal was found by Cheapflights users on 2/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/109:30 pmORD - BRU
1 stop31h 15mTurkish Airlines
Tue 3/183:20 pmBRU - ORD
1 stop25h 50mTurkish Airlines
Deal found 2/20$563
This Scandinavian Airlines deal was found by Cheapflights users on 2/20. 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 4/257:15 pmORD - BRU
2 stops33h 00mScandinavian Airlines
Mon 4/289:15 pmBRU - ORD
2 stops25h 55mScandinavian Airlines
Deal found 2/20$564
This Mytrip deal was found by Cheapflights users on 2/20. 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 3/105:22 pmORD - BRU
2 stops34h 28mMultiple Airlines
Mon 3/1710:30 amBRU - ORD
2 stops27h 14mMultiple Airlines
Deal found 2/20$601
This oojo deal was found by Cheapflights users on 2/20. 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 3/239:25 pmORD - BRU
1 stop20h 20mTAP AIR PORTUGAL
Tue 4/18:55 pmBRU - ORD
1 stop26h 15mTAP AIR PORTUGAL
Deal found 2/20$605
This Mytrip deal was found by Cheapflights users on 2/20. 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 3/107:30 pmORD - CRL
2 stops20h 45mMultiple Airlines
Tue 3/1812:55 pmCRL - ORD
2 stops35h 25mMultiple Airlines
Deal found 2/20$616
This United deal was found by Cheapflights users on 2/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/196:30 amSTL - BRU
2 stops19h 25mUnited Airlines
Wed 3/2610:00 amBRU - STL
2 stops32h 12mUnited Airlines
Deal found 2/20$618
This Expedia deal was found by Cheapflights users on 2/19. 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.
Sat 8/233:45 pmORD - BRU
1 stop10h 55mAer Lingus
Sat 8/3010:20 amBRU - ORD
1 stop15h 40mAer Lingus
Deal found 2/19$637
This Flighttix deal was found by Cheapflights users on 2/20. 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 3/105:55 pmORD - BRU
Nonstop8h 00mLufthansa
Tue 3/1810:10 amBRU - ORD
Nonstop9h 05mLufthansa
Deal found 2/20$718
This Lufthansa deal was found by Cheapflights users on 2/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/264:45 pmSTL - BRU
1 stop11h 05mLufthansa
Sat 4/269:30 amBRU - STL
1 stop35h 00mLufthansa
Deal found 2/20$832
This oojo deal was found by Cheapflights users on 2/20. 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 3/2011:42 amORD - BRU
2 stops16h 53mBritish Airways
Sat 3/292:45 pmBRU - ORD
2 stops26h 06mBritish Airways
Deal found 2/20$873
This United Airlines deal was found by Cheapflights users on 2/20. 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 3/105:55 pmORD - BRU
Nonstop8h 00mUnited Airlines
Mon 3/1710:10 amBRU - ORD
Nonstop9h 05mUnited Airlines
Deal found 2/20$876
This oojo deal was found by Cheapflights users on 2/20. 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.
Tue 9/165:10 pmORD - BRU
2 stops42h 30mLOT
Tue 12/1610:30 amBRU - ORD
1 stop16h 30mLOT
Deal found 2/20$897

Find flights from Illinois to Belgium within your budget

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 February 20, 2025.

Fly from

Illinois

Fly to

Belgium

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 3/10

9:30 pm-10:45 am

1 stop31h 15m

Brussels Bruxelles-National

Tue 3/18

3:20 pm-11:10 am

1 stop25h 50m

$563

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 4/25

7:15 pm-11:15 am

2 stops33h 00m

Brussels Bruxelles-National

Mon 4/28

9:15 pm-4:10 pm

2 stops25h 55m

$564

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 3/10

5:22 pm-9:50 am

2 stops34h 28m

Brussels Bruxelles-National

Mon 3/17

10:30 am-7:44 am

2 stops27h 14m

$601

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 3/23

9:25 pm-11:45 pm

1 stop20h 20m

Brussels Bruxelles-National

Tue 4/1

8:55 pm-4:10 pm

1 stop26h 15m

$605

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Mon 3/10

7:30 pm-10:15 pm

2 stops20h 45m

Charleroi Brussels

Tue 3/18

12:55 pm-6:20 pm

2 stops35h 25m

$616

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/19

6:30 am-7:55 am

2 stops19h 25m

Brussels Bruxelles-National

Wed 3/26

10:00 am-12:12 pm

2 stops32h 12m

$618

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Mon 3/10

5:55 pm-7:55 am

Nonstop8h 00m

Brussels Bruxelles-National

Tue 3/18

10:10 am-1:15 pm

Nonstop9h 05m

$718

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Fri 8/1

8:50 pm-9:40 am

1 stop29h 50m

Brussels Bruxelles-National

Thu 8/21

10:20 am-7:00 pm

1 stop15h 40m

$826

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Wed 3/26

4:45 pm-9:50 am

1 stop11h 05m

Brussels Bruxelles-National

Sat 4/26

9:30 am-1:30 pm

1 stop35h 00m

$832

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 3/20

11:42 am-10:35 am

2 stops16h 53m

Brussels Bruxelles-National

Sat 3/29

2:45 pm-10:51 am

2 stops26h 06m

$873

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 33 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.

Travel insights for flights from Illinois to Belgium

Get recent, data-driven insights about flights from Illinois to Belgium including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Belgium (average of $614). Flying from Illinois to Belgium in June is currently the most expensive (average of $1,146). 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 February 20, 2025.

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

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 February 20, 2025.

The most flights from USIL to BE0 are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Belgium by month

Plan your trip to Belgium by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belgium ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. August is typically the driest time to visit Belgium when rainfall is around 1.6 in.

Temperature in Belgium by month

Plan your trip to Belgium by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belgium, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

Reviews of airlines servicing Belgium

Get insights into the airlines that provide service to Belgium. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belgium. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from Illinois to Belgium, such as Delta, KLM and Virgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

Overall

8.0

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 ($367), TAP AIR PORTUGAL ($480), and Aer Lingus ($512).

  • 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, November is the cheapest month in which you can book a flight from Illinois to Belgium (average of $614). Flying from Illinois to Belgium in June is currently the most expensive (average of $1,146). 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.

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$405Average$579FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$438Average$582FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$518Average$869FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$543Average$634FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$552Average$701FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$632Average$1,122FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$686Average$1,005FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$813Average$1,351FlexibilityNo cancel feeOn-timeN/A
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