Cheap flights from Brussels to Illinois from $329
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Brussels to Illinois departing on 5/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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1 adult
Economy
0 bags
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Cheap round-trip flights
KAYAK's recommended round-trip deals from the most popular airlines that fly from Brussels to Illinois.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Brussels to Illinois.
Cheap last minute flights
Planning a quick getaway from Brussels to Illinois? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Illinois, so you can enjoy a seamless trip without layovers.
United Airlines flights from Brussels to Illinois
Our best United Airlines deals on Brussels to Illinois flight tickets
United Airlines![United Airlines]()
Sep 12![United Airlines]()
Sep 21
BRU10:00 amBrussels Bruxelles-National
17h 11m
1 stop
ORD8:11 pmChicago O'Hare Intl
ORD5:55 pmChicago O'Hare Intl
8h 05m
BRU9:00 amBrussels Bruxelles-National
United Airlines![United Airlines]()
Jun 7![United Airlines]()
Jun 14
BRU10:00 amBrussels Bruxelles-National
11h 55m
1 stop
ORD2:55 pmChicago O'Hare Intl
ORD1:03 pmChicago O'Hare Intl
13h 42m
2 stops
BRU9:45 amBrussels Bruxelles-National
British Airways flights from Brussels to Illinois
Our best British Airways deals on Brussels to Illinois flight tickets
British Airways![British Airways]()
Jun 2![British Airways]()
Jun 10
BRU10:40 amBrussels Bruxelles-National
20h 11m
2 stops
STL11:51 pmLambert-St Louis
STL7:47 pmLambert-St Louis
17h 38m
2 stops
BRU8:25 pmBrussels Bruxelles-National
British Airways![British Airways]()
Jun 2![British Airways]()
Jun 10
BRU10:40 amBrussels Bruxelles-National
20h 11m
2 stops
STL11:51 pmLambert-St Louis
STL7:47 pmLambert-St Louis
17h 38m
2 stops
BRU8:25 pmBrussels Bruxelles-National
See travel insights to Illinois from
How to get the cheapest flight ticket from Brussels to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
Other information
What is the cheapest month to fly to Illinois?
The cheapest month to fly to Illinois from Brussels is in February. Flight prices, which tend to average around $527, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $589.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Brussels to Illinois is on a Friday when prices can be found for as low as $777. Flights from Brussels to Illinois on a Sunday will generally be more expensive and average around $899. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Brussels to Illinois during this time can be as low as $583. Flights in the morning are often more expensive with an average ticket price of $825.
What is the cheapest Brussels to Illinois flight route?
Fly from Brussels Bruxelles-National to Chicago O'Hare Intl for the best Brussels - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Brussels when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $695 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Brussels for as low as $544 on momondo.
What cabin class options are available on Brussels to Illinois flights?
There are 3 cabin classes available to choose from on Brussels to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Brussels to Illinois?
TAP AIR PORTUGAL, British Airways, and Aer Lingus are the most popular carriers operating from Brussels to Illinois
What airlines fly to Illinois?
United Airlines, Lufthansa and Brussels Airlines are the top three most popular airlines that fly to Illinois from Brussels according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from Brussels to Illinois on average per day?
The number of flights available between Brussels and Illinois is 6 per day as of April 2025. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.
How many flights depart from Brussels to Illinois on average per week?
42 flights are operational weekly from Brussels to Illinois as of April 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.
Cheap Brussels to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Brussels to Illinois
When did momondo last update prices for flights from Brussels to Illinois?
Prices for flights from Brussels to Illinois were last updated today.
How many operators does momondo search for flights from Brussels to Illinois?
As of April 2025, there are 4 operators available to choose from for flights from Brussels to Illinois.
How old do you have to be to fly from Brussels to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Brussels to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from Brussels to Illinois
Compare and see reviews for airlines that fly from Brussels to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $576 | Free Cancellation | Rating 7.4 8,685 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 6.7 7,030 reviews | |||
| PriceFrom $592 | Free Cancellation | Rating 7.3 345 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Brussels to Illinois?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Brussels to Illinois. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Brussels to Illinois with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Brussels to Illinois flights to just show those with flexible booking policies.
How can momondo help me find flights from Brussels to Illinois?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Brussels.
I’m not ready to book a flight from Brussels to Illinois right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Brussels to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.
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