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$332+ Cheap flights from Brussels 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
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Brussels to Illinois

Keep the following information in mind while searching for Brussels to Illinois flight deals. Data was last updated July 31, 2025.

Round-trip from

$509
(American Airlines)

One-way from

$332
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$717
From Brussels to Illinois
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One-way flight from Brussels 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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Find flight deals from Brussels to Illinois

Cheapest flights from Brussels to Illinois
Explore the most affordable flight options available from Brussels to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:15 amBRU - STL
2 stops18h 32mAmerican Airlines
Mon 12/89:25 amSTL - BRU
2 stops18h 45mAmerican Airlines
Deal found 7/30$509
This British Airways deal was found by Cheapflights users on 7/31. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1410:40 amBRU - STL
2 stops18h 43mBritish Airways
Sun 9/218:03 pmSTL - BRU
2 stops14h 57mBritish Airways
Deal found 7/31$513
This Air Canada deal was found by Cheapflights users on 7/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:30 amBRU - ORD
2 stops17h 59mAir Canada
Thu 9/258:25 pmORD - BRU
1 stop28h 25mAir Canada
Deal found 7/31$525
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:50 amBRU - ORD
2 stops20h 03mBritish Airways
Mon 10/134:52 pmORD - BRU
2 stops17h 18mBritish Airways
Deal found 7/30$526
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.
Tue 9/910:55 amBRU - ORD
2 stops29h 20mAmerican Airlines
Fri 9/264:55 pmORD - BRU
1 stop21h 20mAmerican Airlines
Deal found 7/29$527
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/152:25 pmBRU - ORD
1 stop31h 30mLufthansa
Sat 10/115:55 pmORD - BRU
Nonstop8h 05mLufthansa
Deal found 7/30$529
This Austrian Airlines deal was found by Cheapflights users on 7/31. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:50 amBRU - ORD
2 stops18h 35mAustrian Airlines
Tue 9/3012:55 pmORD - BRU
2 stops15h 10mAustrian Airlines
Deal found 7/31$538
This Virgin Atlantic deal was found by Cheapflights users on 7/31. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1510:45 amBRU - MDW
2 stops17h 51mVirgin Atlantic
Tue 9/3010:35 amMDW - BRU
1 stop15h 05mVirgin Atlantic
Deal found 7/31$543
This KLM deal was found by Cheapflights users on 7/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:45 amBRU - MDW
1 stop13h 50mKLM
Thu 9/2512:43 pmMDW - BRU
1 stop12h 57mKLM
Deal found 7/31$544
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.
Thu 9/1110:45 amBRU - MDW
2 stops17h 51mDelta
Thu 9/2512:43 pmMDW - BRU
1 stop12h 57mDelta
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.
Thu 10/910:45 amBRU - ORD
1 stop17h 54mDelta
Mon 10/1310:30 amORD - BRU
2 stops16h 10mDelta
Deal found 7/30$547
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.
Fri 9/1210:45 amBRU - MDW
1 stop13h 50mAir France
Thu 9/2512:43 pmMDW - BRU
1 stop12h 57mAir France
Deal found 7/29$551

Cheapflights Fare Finder

 
Customize your flight search to find flights from Brussels 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 July 31, 2025.
Use the filters below to find and compare flights from Brussels to Illinois that are best for you.

Fly from

Brussels

Fly to

Illinois

Route

Depart

Return

Price

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Thu 12/4

10:15 am-9:47 pm

2 stops18h 32m

Lambert-St Louis

Mon 12/8

9:25 am-11:10 am

2 stops18h 45m

$509

BrusselsSt. Louis

BRU - STL

BRUSTL

Brussels Bruxelles-National

Sun 9/14

10:40 am-10:23 pm

2 stops18h 43m

Lambert-St Louis

Sun 9/21

8:03 pm-6:00 pm

2 stops14h 57m

$513

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Mon 9/8

8:30 am-7:29 pm

2 stops17h 59m

Chicago O'Hare Intl

Thu 9/25

8:25 pm-7:50 am

1 stop28h 25m

$525

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Thu 10/9

10:50 am-11:53 pm

2 stops20h 03m

Chicago O'Hare Intl

Mon 10/13

4:52 pm-5:10 pm

2 stops17h 18m

$526

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Tue 9/9

10:55 am-9:15 am

2 stops29h 20m

Chicago O'Hare Intl

Fri 9/26

4:55 pm-9:15 pm

1 stop21h 20m

$527

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Fri 8/15

7:30 pm-2:55 pm

1 stop26h 25m

Chicago O'Hare Intl

Mon 10/13

5:55 pm-9:00 am

Nonstop8h 05m

$529

BrusselsChicago

BRU - ORD

BRUORD

Brussels Bruxelles-National

Mon 9/15

6:50 am-6:25 pm

2 stops18h 35m

Chicago O'Hare Intl

Tue 9/30

12:55 pm-11:05 am

2 stops15h 10m

$538

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

Mon 9/15

10:45 am-9:36 pm

2 stops17h 51m

Chicago Midway

Tue 9/30

9:35 am-8:40 am

2 stops16h 05m

$543

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

Fri 9/12

10:45 am-5:35 pm

1 stop13h 50m

Chicago Midway

Thu 9/25

12:43 pm-8:40 am

1 stop12h 57m

$544

BrusselsChicago

BRU - MDW

BRUMDW

Brussels Bruxelles-National

Thu 9/11

10:45 am-9:36 pm

2 stops17h 51m

Chicago Midway

Thu 9/25

9:35 am-8:40 am

2 stops16h 05m

$545

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 Brussels to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Brussels to Illinois (average of $245). Flying from Brussels 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 BRU to IL?

Find hourly flight availability from Brussels 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 July 31, 2025.

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

How much does it cost to fly round-trip from Brussels to Illinois?

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 July 31, 2025.
See what other customers who have flown with Delta, KLM, and LOT from Brussels to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

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
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

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 Brussels 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 Brussels to Illinois one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as $381. Users have also found prices from $511 and $544 on Scandinavian Airlines and Lufthansa, respectively.

  • What are the most popular routes from Brussels to Illinois?

    Most travelers choose Brussels Bruxelles-National - Chicago O'Hare Intl, Brussels Bruxelles-National - Chicago Midway or Charleroi Brussels - Chicago O'Hare Intl when deciding on the best route from Brussels to Illinois.

  • What are the most reliable airlines from Brussels to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Brussels to Illinois on time: Air Canada (73%), Austrian Airlines (73%), Brussels Airlines (73%).

  • What are the cheapest flights from Brussels to Illinois?

    On average you can expect to pay $1,252 for a flight from Brussels to Illinois. The cheapest flight overall is $612 while the most popular route, (Brussels Bruxelles-National - Chicago O'Hare Intl) is currently priced at $357.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Brussels to Illinois (average of $245). Flying from Brussels 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 Brussels to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Bruxelles-National to Newark flights
Bruxelles-National to John F Kennedy Intl flights
Bruxelles-National to LaGuardia flights
Charleroi Brussels to John F Kennedy Intl flights
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Bruxelles-National to Reagan-National flights
Charleroi Brussels to Miami flights
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Bruxelles-National to Charlotte flights
Charleroi Brussels to Dulles Intl flights
Bruxelles-National to Philadelphia flights
Bruxelles-National to Minneapolis flights
Bruxelles-National to San Diego flights
Bruxelles-National to Tampa flights
Charleroi Brussels to Orlando flights
Bruxelles-National to Raleigh flights
Bruxelles-National to Santa Ana flights
Bruxelles-National to Portland flights
Charleroi Brussels to Boston flights
Bruxelles-National to Burbank flights
Bruxelles-National to Detroit flights
Bruxelles-National to Austin flights
Bruxelles-National to Salt Lake City flights

Top 3 airlines flying from Brussels to Illinois

Discover the top 3 airlines that operate flights from Brussels 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 July 31, 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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