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Bruxelles-National

$263+ Cheap flights from Illinois to Bruxelles-National (BRU)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
ene. 1 — ene. 81
jue. 1/1
jue. 1/8
1 adult, Economy
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Cheap flight deals from Illinois to Bruxelles-National

Cheapest flights from Illinois to Bruxelles-National
Explore the most affordable flight options available from Illinois to Bruxelles-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 2, 2025.

This oojo deal was found by Cheapflights users on 11/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/37:10 pmORD - BRU
1 stop21h 40mTAP AIR PORTUGAL
dom. 12/76:00 amBRU - ORD
1 stop15h 45mTAP AIR PORTUGAL
Deal found 11/30$459
This oojo deal was found by Cheapflights users on 11/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/78:25 pmORD - BRU
1 stop13h 40mTAP AIR PORTUGAL
sáb. 12/1311:50 amBRU - ORD
1 stop33h 55mTAP AIR PORTUGAL
Deal found 11/30$466
This Expedia deal was found by Cheapflights users on 11/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/58:15 pmORD - BRU
1 stop20h 35mTAP AIR PORTUGAL
dom. 12/76:00 amBRU - ORD
1 stop15h 45mTAP AIR PORTUGAL
Deal found 11/30$482
This FlightHub deal was found by Cheapflights users on 11/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/58:15 pmORD - BRU
1 stop31h 45mTAP AIR PORTUGAL
sáb. 12/1311:50 amBRU - ORD
1 stop33h 55mTAP AIR PORTUGAL
Deal found 11/30$483
This Expedia deal was found by Cheapflights users on 11/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/308:25 pmORD - BRU
1 stop31h 35mTAP AIR PORTUGAL
dom. 12/76:00 amBRU - ORD
1 stop15h 45mTAP AIR PORTUGAL
Deal found 11/30$487
This Delta deal was found by Cheapflights users on 12/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/89:50 amSTL - BRU
1 stop16h 10mDelta
lun. 12/1511:00 amBRU - STL
1 stop16h 17mDelta
Deal found 12/1$499
This Scandinavian Airlines deal was found by Cheapflights users on 11/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/77:20 pmORD - BRU
1 stop17h 30mScandinavian Airlines
vie. 12/1210:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 11/29$557
This FlightHub deal was found by Cheapflights users on 12/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/293:50 pmORD - BRU
1 stop10h 45mAer Lingus
dom. 2/1510:15 amBRU - ORD
1 stop16h 00mAer Lingus
Deal found 12/2$581
This FlightHub deal was found by Cheapflights users on 11/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/77:20 pmORD - BRU
1 stop31h 20mScandinavian Airlines
jue. 12/1110:20 amBRU - ORD
1 stop13h 25mScandinavian Airlines
Deal found 11/29$596
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/297:20 pmORD - BRU
1 stop17h 30mScandinavian Airlines
dom. 2/157:45 pmBRU - ORD
2 stops28h 00mScandinavian Airlines
Deal found 11/30$637
This United Airlines deal was found by Cheapflights users on 12/1. 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.
lun. 12/153:19 pmSTL - BRU
1 stop10h 36mUnited Airlines
jue. 12/2510:00 amBRU - STL
2 stops43h 43mUnited Airlines
Deal found 12/1$730
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/151:00 pmSTL - BRU
1 stop12h 55mLufthansa
jue. 12/2510:10 amBRU - STL
1 stop13h 17mLufthansa
Deal found 11/30$872

Find flight deals from Illinois to Bruxelles-National

Keep the following information in mind while searching for Illinois to Bruxelles-National flight deals. Data was last updated diciembre 2, 2025.

Round-trip from

$386
(CrystalTravel)

One-way from

$263
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$842

Good round-trip deal

$939 or less

Good one-way deal

$493 or less
From Illinois to Brussels Bruxelles-National
Search Deals
One-way flight from Illinois to Brussels Bruxelles-National
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($279 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Illinois to Brussels Bruxelles-National.
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Price to beat on a one-way flight from Illinois to Brussels Bruxelles-National.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Bruxelles-National 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 diciembre 2, 2025.
Use the filters below to find and compare flights from Illinois to Brussels Bruxelles-National Airport that are best for you.

Fly from

Illinois

Fly to

Bruxelles-National

Route

Depart

Return

Price

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

mar. 1/13

12:44 pm-7:15 am

1 stop11h 31m

Brussels Bruxelles-National

mar. 1/20

11:35 am-7:27 pm

2 stops38h 52m

$419

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

mar. 1/13

12:44 pm-7:15 am

1 stop11h 31m

Brussels Bruxelles-National

mar. 1/20

6:30 am-11:59 pm

2 stops24h 29m

$421

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

jue. 1/15

7:05 am-9:40 am

2 stops19h 35m

Brussels Bruxelles-National

jue. 1/22

10:20 am-4:45 pm

1 stop13h 25m

$423

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

mar. 1/13

8:05 am-7:50 am

2 stops16h 45m

Brussels Bruxelles-National

mar. 1/20

10:00 am-2:30 pm

2 stops35h 30m

$441

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

dom. 1/25

7:10 pm-10:50 am

2 stops32h 40m

Brussels Bruxelles-National

mar. 2/3

11:30 am-4:45 pm

2 stops36h 15m

$453

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

mié. 1/14

7:00 am-7:50 am

2 stops17h 50m

Brussels Bruxelles-National

mié. 1/21

11:55 am-7:27 pm

1 stop14h 32m

$457

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

lun. 1/12

6:44 pm-4:40 pm

2 stops14h 56m

Brussels Bruxelles-National

lun. 1/19

3:00 pm-10:44 pm

2 stops38h 44m

$460

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

jue. 1/29

11:20 am-8:55 am

1 stop14h 35m

Brussels Bruxelles-National

mar. 2/3

10:00 am-2:30 pm

2 stops35h 30m

$463

ChicagoBrussels

ORD - BRU

ORDBRU

Chicago O'Hare Intl

sáb. 1/17

7:00 am-9:40 am

2 stops19h 40m

Brussels Bruxelles-National

dom. 1/25

7:45 pm-4:45 pm

2 stops28h 00m

$464

St. LouisBrussels

STL - BRU

STLBRU

Lambert-St Louis

mar. 1/13

6:40 pm-8:55 am

1 stop31h 15m

Brussels Bruxelles-National

mar. 1/20

11:15 am-11:59 pm

1 stop19h 44m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 47 results
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Best time to book a flight from Illinois to Bruxelles-National

Have a flexible travel schedule? Discover the best time to fly to Bruxelles-National 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 Brussels Bruxelles-National Airport

What is the cheapest month to book a flight from Illinois to Brussels Bruxelles-National Airport?

Currently, September is the cheapest month in which you can book a flight from Illinois to Brussels Bruxelles-National Airport (average of $293). Flying from Illinois to Brussels Bruxelles-National Airport in August is currently the most expensive (average of $496). 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 Bruxelles-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 2, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 54% on flights from Illinois to Brussels Bruxelles-National Airport by exploring options for tickets in the evening.

What is the cheapest day to fly from Illinois to Brussels Bruxelles-National Airport?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Bruxelles-National. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Brussels Bruxelles-National Airport flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Illinois to Brussels Bruxelles-National Airport

Explore weekly flight availability from Illinois to Bruxelles-National. 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 diciembre 2, 2025.

The most flights from USIL to BRU 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).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Bruxelles-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Brussels Bruxelles-National Airport?

    Brussels Airlines, Scandinavian Airlines, and Air Canada can get you from Illinois to Brussels Bruxelles-National Airport in just under 11h 31m. Your travel time can differ by up to 8h 04m. The distance between Illinois and Brussels Bruxelles-National Airport is about 4393 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Brussels Bruxelles-National Airport one-way?

    The cheapest airlines for a one-way flight from Illinois to Brussels Bruxelles-National Airport are Scandinavian Airlines ($214), TAP AIR PORTUGAL ($316), and United Airlines ($489).

  • What are the most popular routes from Illinois to Brussels Bruxelles-National Airport?

    The most popular route from Illinois to Brussels Bruxelles-National Airport is Chicago O'Hare Intl - Brussels Bruxelles-National. You may also consider Chicago Midway - Brussels Bruxelles-National or Lambert-St Louis - Brussels Bruxelles-National.

  • What are the most reliable airlines from Illinois to Brussels Bruxelles-National Airport?

    No one likes to see their flight delayed. When booking a flight from Illinois to Brussels Bruxelles-National Airport consider choosing SWISS (63%), Qatar Airways (50%) or Air Canada (47%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Brussels Bruxelles-National Airport?

    While on average a flight from Illinois to Brussels Bruxelles-National Airport is generally $2,420, our data shows the cheapest flight currently is $410. When looking at the most popular route, (Chicago O'Hare Intl - Brussels Bruxelles-National), you can expect to pay $392 for that flight.

  • Can I find deals for flights from Illinois to Bruxelles-National that include hotel bookings?

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

  • How can I find direct flights from Illinois to Bruxelles-National?

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

  • Can I find deals for business class flights from Illinois to Bruxelles-National?

    Yes. Cheapflights offers flight deals from Illinois to Bruxelles-National 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 Bruxelles-National Airport?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Brussels Bruxelles-National Airport (average of $293). Flying from Illinois to Brussels Bruxelles-National Airport in August is currently the most expensive (average of $496). 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

Traveling to a place near Brussels Bruxelles-National Airport?

Book flights to Brussels Bruxelles-National Airport if you plan to visit one of these locations
Mons
Hasselt
Charleroi
Mechelen
Zaventem

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Alternative routes for Illinois to Bruxelles-National

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Bruxelles-National flights
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LaGuardia to Bruxelles-National flights
Boston to Bruxelles-National flights
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Hobby to Bruxelles-National flights
Baltimore to Bruxelles-National flights
Reagan-National to Bruxelles-National flights
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John F Kennedy Intl to Charleroi Brussels flights
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Newark to Charleroi Brussels flights
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Dulles Intl to Charleroi Brussels flights
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O'Hare Intl to Charleroi Brussels flights
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Oakland to Bruxelles-National flights
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Kansas City to Bruxelles-National flights
Madison to Bruxelles-National flights

Top 8 airlines flying from Illinois to Bruxelles-National

Discover the top 8 airlines that operate flights from Illinois to Bruxelles-National. 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 diciembre 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$298Average$485FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$428Average$609FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$445Average$463FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$492Average$793FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$536Average$751FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$551Average$692FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$590Average$1,054FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$1,020Average$1,641FlexibilityNo cancel feeOn-time76%

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