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$332+ Cheap flights from Belgium to Illinois

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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — ORD
ago 4 — ago 111
seg 8/4
seg 8/11
1 adult, Economy
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Cheap flight deals from Belgium to Illinois

Keep the following information in mind while searching for Belgium to Illinois flight deals. Data was last updated julho 30, 2025.

Round-trip from

$510
(American Airlines)

One-way from

$332
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$717

Good round-trip deal

$722 or less

Good one-way deal

$708 or less
From Belgium to Illinois
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One-way flight from Belgium to Illinois
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Highest demand for flights based on searches. 6% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Belgium to Illinois.
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Price to beat on a one-way flight from Belgium to Illinois.
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Find flight deals from Belgium to Illinois

Cheapest flights from Belgium to Illinois
Explore the most affordable flight options available from Belgium to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 12/410:15 amBRU - STL
2 stops18h 32mAmerican Airlines
seg 12/89:25 amSTL - BRU
2 stops18h 45mAmerican Airlines
Deal found 7/29$510
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 9/1110:50 amBRU - STL
2 stops16h 35mBritish Airways
qui 9/181:53 pmSTL - BRU
2 stops17h 17mBritish Airways
Deal found 7/28$521
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 9/1510:40 amBRU - ORD
1 stop13h 20mAmerican Airlines
sex 9/2610:35 pmORD - BRU
1 stop13h 35mAmerican Airlines
Deal found 7/28$525
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 9/127:35 pmBRU - ORD
1 stop23h 15mBritish Airways
qui 9/251:59 pmORD - BRU
2 stops17h 11mBritish Airways
Deal found 7/28$526
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 9/1110:45 amBRU - MDW
2 stops17h 51mDelta
qui 9/259:35 amMDW - BRU
2 stops16h 05mDelta
Deal found 7/30$545
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/910:45 amBRU - ORD
1 stop17h 54mDelta
seg 10/1310:30 amORD - BRU
2 stops16h 10mDelta
Deal found 7/30$547
This Virgin Atlantic deal was found by Cheapflights users on 7/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 9/1110:45 amBRU - MDW
2 stops17h 51mVirgin Atlantic
qui 9/2510:35 amMDW - BRU
1 stop15h 05mVirgin Atlantic
Deal found 7/29$549
This Air France deal was found by Cheapflights users on 7/29. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 9/1210:45 amBRU - MDW
1 stop13h 50mAir France
qui 9/2512:43 pmMDW - BRU
1 stop12h 57mAir France
Deal found 7/29$551
This Virgin Atlantic deal was found by Cheapflights users on 7/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 8/1610:45 amBRU - ORD
2 stops16h 38mVirgin Atlantic
dom 8/3110:35 amORD - BRU
1 stop15h 05mVirgin Atlantic
Deal found 7/30$556
This KLM deal was found by Cheapflights users on 7/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 8/258:00 amBRU - ORD
1 stop13h 10mKLM
seg 9/14:40 pmORD - BRU
1 stop10h 00mKLM
Deal found 7/28$563
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/137:05 amBRU - MLI
2 stops20h 20mAmerican Airlines
sáb 9/2011:20 amMLI - BRU
2 stops20h 00mAmerican Airlines
Deal found 7/29$564
This Flighttix deal was found by Cheapflights users on 7/28. 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.
sáb 8/1610:00 amBRU - ORD
1 stop17h 16mAir Canada
sex 8/298:40 amORD - BRU
1 stop16h 20mAir Canada
Deal found 7/28$569

Cheapflights Fare Finder

 
Customize your flight search to find flights from Belgium to Illinois 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 julho 30, 2025.
Use the filters below to find and compare flights from Belgium to Illinois that are best for you.

Fly from

Belgium

Fly to

Illinois

Route

Depart

Return

Price

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

qui 12/4

10:15 am-9:47 pm

2 stops18h 32m

Lambert-St Louis

seg 12/8

9:25 am-11:10 am

2 stops18h 45m

$510

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

qui 9/11

10:50 am-8:25 pm

2 stops16h 35m

Lambert-St Louis

qui 9/18

1:53 pm-2:10 pm

2 stops17h 17m

$521

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

seg 9/15

10:40 am-5:00 pm

1 stop13h 20m

Chicago O'Hare Intl

sex 9/26

10:35 pm-7:10 pm

1 stop13h 35m

$525

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

sex 9/12

7:35 pm-11:50 am

1 stop23h 15m

Chicago O'Hare Intl

qui 9/25

1:59 pm-2:10 pm

2 stops17h 11m

$526

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

qui 9/11

10:45 am-9:36 pm

2 stops17h 51m

Chicago Midway

qui 9/25

9:35 am-8:40 am

2 stops16h 05m

$545

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

qui 10/9

10:45 am-9:39 pm

1 stop17h 54m

Chicago O'Hare Intl

seg 10/13

10:30 am-9:40 am

2 stops16h 10m

$547

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

qui 9/11

10:45 am-9:36 pm

2 stops17h 51m

Chicago Midway

qui 9/25

10:35 am-8:40 am

1 stop15h 05m

$549

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

sex 9/12

10:45 am-5:35 pm

1 stop13h 50m

Chicago Midway

qui 9/25

12:43 pm-8:40 am

1 stop12h 57m

$551

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

sáb 8/16

10:45 am-8:23 pm

2 stops16h 38m

Chicago O'Hare Intl

dom 8/31

10:35 am-8:40 am

1 stop15h 05m

$556

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

seg 8/25

8:00 am-2:10 pm

1 stop13h 10m

Chicago O'Hare Intl

seg 9/1

4:40 pm-9:40 am

1 stop10h 00m

$563

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 41 results
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Best time to book a flight from Belgium to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Belgium 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 Belgium to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Belgium to Illinois (average of $245). Flying from Belgium to Illinois in March is currently the most expensive (average of $321). 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 BE to IL?

Find hourly flight availability from Belgium to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julho 30, 2025.

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

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated julho 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and LOT from Belgium to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
LOT
7.6
Good
1,105 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Belgium to Illinois. 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 Belgium to Illinois one-way?

    $383 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Scandinavian Airlines and Aer Lingus, with prices starting from $514 and $569, respectively.

  • Can I find deals for flights from Belgium to Illinois that include hotel bookings?

    Yes. In addition to deals on Belgium to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Belgium to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belgium to Illinois.

  • Can I find deals for business class flights from Belgium to Illinois?

    Yes. Cheapflights offers flight deals from Belgium to Illinois 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 Belgium to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Belgium to Illinois (average of $245). Flying from Belgium to Illinois in March is currently the most expensive (average of $321). 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 Belgium to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Belgium to Illinois

Discover the top 3 airlines that operate flights from Belgium to Illinois. 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 julho 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$576Average$696FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$579Average$691FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$585Average$755FlexibilityNo cancel feeOn-timeN/A

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