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$303+ Cheap flights from Illinois to Brussels

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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Cheap flight deals from Illinois to Brussels

Keep the following information in mind while searching for Illinois to Brussels flight deals. Data was last updated March 3, 2025.

Round-trip from

$559
(Gotogate)

One-way from

$310
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$895
From Illinois to Brussels
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One-way flight from Illinois to Brussels
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($175 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Illinois to Brussels

Cheapest flights from Illinois to Brussels
Explore the most affordable flight options available from Illinois to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

This Mytrip deal was found by Cheapflights users on 3/3. 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.
Thu 4/177:15 pmORD - BRU
1 stop31h 25mScandinavian Airlines
Thu 4/246:55 pmBRU - ORD
2 stops28h 15mScandinavian Airlines
Deal found 3/3$558
This Expedia deal was found by Cheapflights users on 3/3. 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.
Thu 3/274:27 pmORD - BRU
2 stops15h 28mBritish Airways
Sun 4/68:35 pmBRU - ORD
1 stop26h 20mBritish Airways
Deal found 3/3$560
This Kiwi.com deal was found by Cheapflights users on 3/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/611:55 amORD - BRU
1 stop15h 50mTurkish Airlines
Sat 3/86:10 pmBRU - ORD
1 stop23h 00mTurkish Airlines
Deal found 3/2$569
This Mytrip deal was found by Cheapflights users on 3/2. 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.
Sun 3/309:30 pmORD - CRL
2 stops18h 00mMultiple Airlines
Tue 4/82:55 pmCRL - ORD
2 stops33h 55mMultiple Airlines
Deal found 3/2$569
This oojo deal was found by Cheapflights users on 3/3. 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 10/17:25 pmORD - BRU
1 stop10h 25mIcelandair
Sun 10/121:50 pmBRU - ORD
1 stop11h 25mIcelandair
Deal found 3/3$574
This Mytrip deal was found by Cheapflights users on 3/2. 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.
Sun 3/306:00 pmORD - BRU
1 stop34h 00mTAP AIR PORTUGAL
Tue 4/88:55 pmBRU - ORD
1 stop26h 15mTAP AIR PORTUGAL
Deal found 3/2$598
This Mytrip deal was found by Cheapflights users on 3/2. 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.
Sun 3/306:00 pmORD - BRU
2 stops22h 25mMultiple Airlines
Tue 4/88:20 pmBRU - ORD
2 stops26h 50mMultiple Airlines
Deal found 3/2$611
This Justfly.com deal was found by Cheapflights users on 3/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/173:50 pmSTL - BRU
2 stops15h 20mAir Canada
Fri 4/49:40 amBRU - STL
2 stops36h 05mAir Canada
Deal found 3/2$628
This United Airlines deal was found by Cheapflights users on 3/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/53:32 pmSTL - BRU
1 stop10h 23mUnited Airlines
Tue 3/1110:00 amBRU - STL
2 stops39h 25mUnited Airlines
Deal found 3/2$668
This United deal was found by Cheapflights users on 3/2. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/115:33 pmSTL - BRU
1 stop32h 32mMultiple Airlines
Wed 4/210:00 amBRU - STL
2 stops35h 49mMultiple Airlines
Deal found 3/2$675
This American Airlines deal was found by Cheapflights users on 3/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/51:06 pmORD - BRU
2 stops13h 49mAmerican Airlines
Sat 9/207:05 amBRU - ORD
1 stop14h 10mAmerican Airlines
Deal found 3/2$689
This Justfly.com deal was found by Cheapflights users on 3/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/43:10 pmSTL - BRU
2 stops15h 25mBritish Airways
Tue 3/1111:55 amBRU - STL
2 stops16h 23mBritish Airways
Deal found 3/2$747

Find flights from Illinois to Brussels within your budget

Customize your flight search to find flights from Illinois to Brussels 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 March 3, 2025.

Fly from

Illinois

Fly to

Brussels

Route

Depart

Return

Price

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 4/17

7:15 pm-9:40 am

1 stop31h 25m

Brussels Bruxelles-National

Thu 4/24

6:55 pm-4:10 pm

2 stops28h 15m

$558

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 3/27

4:27 pm-1:55 pm

2 stops15h 28m

Brussels Bruxelles-National

Sun 4/6

8:35 pm-3:55 pm

1 stop26h 20m

$560

ChicagoBrussels

ORD - CRL

ORDCRL

Chicago O'Hare Intl

Sun 3/30

9:30 pm-10:30 pm

2 stops18h 00m

Charleroi Brussels

Tue 4/8

2:55 pm-5:50 pm

2 stops33h 55m

$569

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 4/3

7:30 pm-12:50 pm

1 stop10h 20m

Brussels Bruxelles-National

Mon 4/14

1:50 pm-6:20 pm

1 stop11h 30m

$573

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Thu 4/10

11:25 am-10:10 am

1 stop15h 45m

Brussels Bruxelles-National

Tue 4/15

11:10 am-9:40 am

1 stop29h 30m

$577

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 3/30

6:00 pm-11:55 pm

1 stop22h 55m

Brussels Bruxelles-National

Tue 4/8

8:55 pm-4:10 pm

1 stop26h 15m

$592

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Sun 3/30

6:00 pm-11:25 pm

2 stops22h 25m

Brussels Bruxelles-National

Tue 4/8

8:20 pm-4:10 pm

2 stops26h 50m

$611

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Mon 3/17

3:50 pm-1:10 pm

2 stops15h 20m

Brussels Bruxelles-National

Fri 4/4

9:40 am-2:45 pm

2 stops36h 05m

$628

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

Thu 3/20

8:25 am-7:55 am

2 stops17h 30m

Brussels Bruxelles-National

Thu 4/3

10:15 am-5:23 pm

1 stop14h 08m

$690

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

Wed 4/16

8:50 pm-8:40 pm

1 stop16h 50m

Brussels Bruxelles-National

Wed 4/23

10:20 am-7:00 pm

1 stop15h 40m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 29 results
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Best time to book a flight from Illinois to Brussels

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

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

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Brussels (average of $614). Flying from Illinois to Brussels 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 BRU?

Find hourly flight availability from Illinois to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

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

Weekly flight availability from Illinois to Brussels

Explore weekly flight availability from Illinois to Brussels. 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 March 3, 2025.

The most flights from USIL to BR1 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 Brussels by month

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

In terms of precipitation, rainfall in Brussels 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 Brussels when rainfall is around 1.6 in.

Temperature in Brussels by month

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

If weather is an important factor for your trip to Brussels, 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 Brussels

Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated March 3, 2025.
Get a feel of what it's like to fly with Delta, KLM and Air France from Illinois to Brussels by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
8,068 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
1,323 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
1,434 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
8,679 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
7.4
Good
644 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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 Brussels. 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 Brussels one-way?

    For one-way options, check prices for Scandinavian Airlines. According to our data, you can fly for as low as $367. Users have also found prices from $552 and $732 on TAP AIR PORTUGAL and Aer Lingus, respectively.

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

    The most popular flight routes from Illinois to Brussels are Chicago O'Hare Intl - Brussels Bruxelles-National, Chicago Midway - Brussels Bruxelles-National and Chicago O'Hare Intl - Charleroi Brussels.

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

    Consider Air Canada (73%), Austrian Airlines (73%) or Brussels Airlines (73%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Brussels.

  • What are the cheapest flights from Illinois to Brussels?

    Looking at all options, your cheapest flight can be booked for $508. While the most popular route (Chicago O'Hare Intl - Brussels Bruxelles-National) can be booked for $460 on average our data indicates $996 when flying from Illinois to Brussels.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Illinois to Brussels (average of $614). Flying from Illinois to Brussels 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 Brussels

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Bruxelles-National flights
Newark to Bruxelles-National flights
O'Hare Intl to Bruxelles-National flights
Dulles Intl to Bruxelles-National flights
LaGuardia to Bruxelles-National flights
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Reagan-National to Bruxelles-National flights
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San Francisco to Bruxelles-National flights
Los Angeles to Bruxelles-National flights
John F Kennedy Intl to Charleroi Brussels flights
Midway to Bruxelles-National flights
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Newark to Charleroi Brussels flights
Atlanta to Bruxelles-National flights
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Denver to Bruxelles-National flights
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Minneapolis to Bruxelles-National flights
George Bush Intcntl to Bruxelles-National flights
San Jose to Bruxelles-National flights
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Austin to Bruxelles-National flights
Dulles Intl to Charleroi Brussels flights
Sky Harbor Intl to Bruxelles-National flights
Kansas City to Bruxelles-National flights
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Indianapolis to Bruxelles-National flights
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Fort Lauderdale to Bruxelles-National flights
O'Hare Intl to Charleroi Brussels flights
Los Angeles to Charleroi Brussels flights
Boston to Charleroi Brussels flights
Oakland to Bruxelles-National flights
Des Moines to Bruxelles-National flights

Top 8 airlines flying from Illinois to Brussels

Discover the top 8 airlines that operate flights from Illinois to Brussels. 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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$405Average$585FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$435Average$595FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$518Average$869FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$543Average$634FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$552Average$702FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$632Average$1,123FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$686Average$998FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$813Average$1,351FlexibilityNo cancel feeOn-timeN/A
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