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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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Round-trip from

$545
(oojo)

One-way from

$304
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$679

Good round-trip deal

$974 or less

Good one-way deal

$694 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. 23% potential increase in price ($268 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This Gurufare deal was found by Cheapflights users on 4/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/147:15 pmORD - BRU
1 stop13h 05mScandinavian Airlines
Wed 10/18:30 pmBRU - ORD
1 stop26h 40mScandinavian Airlines
Deal found 4/1$446
This FlightHub deal was found by Cheapflights users on 4/1. 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 10/17:50 pmORD - BRU
1 stop18h 30mTurkish Airlines
Wed 10/82:25 pmBRU - ORD
1 stop26h 15mTurkish Airlines
Deal found 4/1$548
This Kissandfly.com deal was found by Cheapflights users on 4/1. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/43:45 pmORD - BRU
1 stop10h 55mAer Lingus
Tue 5/1310:20 amBRU - ORD
1 stop15h 40mAer Lingus
Deal found 4/1$636
This Mytrip deal was found by Cheapflights users on 4/2. 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 4/307:25 pmORD - CRL
2 stops20h 25mMultiple Airlines
Wed 5/711:05 amCRL - ORD
3 stops27h 22mMultiple Airlines
Deal found 4/2$660
This United Airlines deal was found by Cheapflights users on 4/1. 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 5/199:40 amSTL - BRU
1 stop16h 20mUnited Airlines
Wed 6/410:00 amBRU - STL
2 stops35h 53mUnited Airlines
Deal found 4/1$689
This Booking.com deal was found by Cheapflights users on 4/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/197:30 amSTL - BRU
2 stops17h 35mAir Canada
Wed 6/410:00 amBRU - STL
2 stops36h 30mAir Canada
Deal found 4/1$691
This Mytrip deal was found by Cheapflights users on 4/1. 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 5/131:30 pmSTL - BRU
2 stops16h 45mMultiple Airlines
Tue 5/2010:00 amBRU - STL
1 stop16h 58mMultiple Airlines
Deal found 4/1$695
This Mytrip deal was found by Cheapflights users on 4/1. 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 4/277:25 pmORD - BRU
3 stops30h 50mMultiple Airlines
Sun 5/49:45 amBRU - ORD
2 stops37h 59mMultiple Airlines
Deal found 4/1$723
This oojo deal was found by Cheapflights users on 3/31. 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 5/127:30 pmSTL - BRU
2 stops14h 40mBritish Airways
Mon 5/269:15 pmBRU - STL
2 stops26h 07mBritish Airways
Deal found 3/31$739
This Lufthansa deal was found by Cheapflights users on 4/1. 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.
Sat 4/195:33 pmSTL - BRU
2 stops33h 37mLufthansa
Sat 4/269:30 amBRU - STL
1 stop35h 00mLufthansa
Deal found 4/1$837
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 11/275:55 pmORD - BRU
Nonstop8h 00mUnited Airlines
Sun 12/710:10 amBRU - ORD
Nonstop9h 05mUnited Airlines
Deal found 4/1$887
This Gurufare deal was found by Cheapflights users on 4/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/159:20 pmORD - BRU
1 stop15h 40mBrussels Airlines
Thu 4/2410:15 amBRU - ORD
Nonstop8h 45mBrussels Airlines
Deal found 4/2$888

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 April 2, 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

Sun 9/14

7:15 pm-3:20 pm

1 stop13h 05m

Brussels Bruxelles-National

Wed 10/1

8:30 pm-4:10 pm

1 stop26h 40m

$446

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 9/21

11:25 am-1:25 pm

1 stop19h 00m

Brussels Bruxelles-National

Thu 10/9

2:25 pm-9:40 am

1 stop26h 15m

$603

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 5/4

3:45 pm-9:40 am

1 stop10h 55m

Brussels Bruxelles-National

Tue 5/13

10:20 am-7:00 pm

1 stop15h 40m

$636

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Wed 4/30

7:25 pm-10:50 pm

2 stops20h 25m

Charleroi Brussels

Wed 5/7

11:05 am-7:27 am

3 stops27h 22m

$660

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 5/19

9:40 am-9:00 am

1 stop16h 20m

Brussels Bruxelles-National

Wed 6/4

10:00 am-2:53 pm

2 stops35h 53m

$689

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 5/19

7:30 am-8:05 am

2 stops17h 35m

Brussels Bruxelles-National

Wed 6/4

10:00 am-3:30 pm

2 stops36h 30m

$691

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Tue 5/13

1:30 pm-1:15 pm

2 stops16h 45m

Brussels Bruxelles-National

Tue 5/20

10:00 am-7:58 pm

1 stop16h 58m

$695

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 4/27

7:25 pm-9:15 am

3 stops30h 50m

Brussels Bruxelles-National

Sun 5/4

9:45 am-4:44 pm

2 stops37h 59m

$723

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 5/12

7:30 pm-5:10 pm

2 stops14h 40m

Brussels Bruxelles-National

Mon 5/26

9:15 pm-4:22 pm

2 stops26h 07m

$739

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Sat 4/19

5:33 pm-10:10 am

2 stops33h 37m

Brussels Bruxelles-National

Sat 4/26

9:30 am-1:30 pm

1 stop35h 00m

$837

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 39 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, 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 April 2, 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 April 2, 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).

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 April 2, 2025.
Read through reviews of airlines operating flights from Illinois to Belgium, such as Delta, KLM and Air France. 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
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
1,323 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
1,427 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
8,616 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7.4
Good
637 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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 TAP AIR PORTUGAL ($335), Scandinavian Airlines ($368), and Icelandair ($535).

  • 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.

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 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$405Average$570FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$438Average$619FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$492Average$811FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$512Average$712FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$518Average$869FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$724Average$1,152FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$754Average$1,056FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$813Average$1,351FlexibilityNo cancel feeOn-timeN/A

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