Cheap flights from Chicago to Brussels from $215
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Brussels departing on 7/29. 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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Delta flights from Chicago to Brussels Bruxelles-National Airport
Our best Delta deals on Chicago to Brussels Bruxelles-National Airport flight tickets
KLM flights from Chicago to Brussels Bruxelles-National Airport
Our best KLM deals on Chicago to Brussels Bruxelles-National Airport flight tickets
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How to get the cheapest flight ticket from Chicago to Brussels Bruxelles-National Airport
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
What is the cheapest month to fly to Brussels Bruxelles-National Airport?
The cheapest month to fly to Brussels Bruxelles-National Airport from Chicago is in October. Flight prices, which tend to average around $561, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Brussels Bruxelles-National Airport from Chicago during April instead. Flights to Brussels Bruxelles-National Airport in April, while not as cheap as those in October, still average around $573.
What is the cheapest day to depart on your flight to Brussels Bruxelles-National Airport?
The cheapest day to depart from Chicago to Brussels Bruxelles-National Airport is on a Monday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Monday will often find tickets for as low as $1,124. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Brussels Bruxelles-National Airport for around $1,289.
What is the cheapest time of day to depart on your flight to Brussels Bruxelles-National Airport?
Our most recent data shows that the best time of day to fly to Brussels Bruxelles-National Airport is in the evening. Flights from Chicago to Brussels Bruxelles-National Airport during this time can be as low as $579. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,176 on average. Flights to Brussels Bruxelles-National Airport from Chicago in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Chicago to Brussels Bruxelles-National flight route?
Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Chicago - Brussels Bruxelles-National flight prices
How far in advance should I book a flight to Brussels Bruxelles-National Airport?
You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Chicago when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $804 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels Bruxelles-National Airport from Chicago for as low as $610 on momondo.
What cabin class options are available on Chicago to Brussels Bruxelles-National flights?
There are 3 cabin classes available to choose from on Chicago to Brussels Bruxelles-National 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 Chicago to Brussels Bruxelles-National?
Icelandair, Scandinavian Airlines, and Air Canada are the most popular carriers operating from Chicago to Brussels Bruxelles-National
What airlines fly to Brussels Bruxelles-National Airport?
Scandinavian Airlines, United Airlines and Aer Lingus are the top three most popular airlines that fly to Brussels Bruxelles-National Airport from Chicago according to our data. Scandinavian Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Brussels Bruxelles-National Airport. Keep in mind that there are 9 different airlines that fly to Brussels Bruxelles-National Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to Brussels Bruxelles-National Airport on average per day?
As of June 2025, there are 5 flights per day flying from Chicago to Brussels Bruxelles-National Airport. The most common time of day flights depart is 5:00PM, with 100% of flights taking off in the afternoon.
How many flights depart from Chicago to Brussels Bruxelles-National Airport on average per week?
The number of flights available between Chicago and Brussels Bruxelles-National Airport is 35 per week as of June 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.
When to book flights from Chicago to Brussels Bruxelles-National Airport
Cheap Chicago to Brussels Bruxelles-National Airport (CHI to BRU) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Brussels Bruxelles-National Airport
How far is Chicago to Brussels Bruxelles-National by plane?
There are 4139.4 mi between Chicago and Brussels Bruxelles-National. Flights usually cover this in 8h 00m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago to Brussels Bruxelles-National Airport?
Prices for flights from Chicago to Brussels Bruxelles-National Airport are updated daily.
How many operators does momondo search for flights from Chicago to Brussels Bruxelles-National Airport?
The number of operators available for flights from Chicago to Brussels Bruxelles-National Airport is 9 as of June 2025.
How old do you have to be to fly from Chicago to Brussels Bruxelles-National Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Brussels Bruxelles-National Airport.
What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?
The travel and health documents you'll need for your trip to Brussels Bruxelles-National Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Brussels Bruxelles-National Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Brussels Bruxelles-National Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago to Brussels Bruxelles-National Airport is Boeing 787 Dreamliner (40.35% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (32.92%), Boeing 787-8 Dreamliner (10.64%), and Boeing 787-9 Dreamliner (3.47%).
What is the most popular airline from Chicago to Brussels Bruxelles-National Airport?
momondo data reveals that the most frequently booked airline on the route from Chicago to Brussels Bruxelles-National Airport is United Airlines, representing 36% of all bookings. The subsequent popular airlines are Scandinavian Airlines at 23%, Aer Lingus at 13%, and Icelandair at 10%.
Best airlines flying from Chicago to Brussels Bruxelles-National Airport
Compare and see reviews for airlines that fly from Chicago to Brussels Bruxelles-National Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $313 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom $428 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $492 | Free Cancellation | Rating 7.3 3,848 reviews | |||
| PriceFrom $513 | Free Cancellation | Rating 7.1 1,885 reviews | |||
| PriceFrom $551 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $552 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $728 | Free Cancellation | Rating 6.7 7,136 reviews | |||
| PriceFrom $813 | Free Cancellation | Rating 7.4 355 reviews |
United Airlines Flights From Chicago to Brussels Bruxelles-National Airport
United Airlines flies from Chicago to Brussels Bruxelles-National Airport around 7 times per week, with 8,790 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Chicago to Brussels Bruxelles-National Airport in the last 72 hours was $639 (round-trip), much lower than the average airfare cost of $1,033 for United Airlines flights on this route.
Brussels Airlines Flights From Chicago to Brussels Bruxelles-National Airport
Brussels Airlines is also a popular choice for this route. Brussels Airlines flight deals for Chicago to Brussels Bruxelles-National Airport start from as low as $813 round-trip, depending on your selected dates, with average Brussels Airlines deals seen on momondo around $1,318. Brussels Airlines operates 7 flights to Brussels Bruxelles-National Airport from Chicago in an average week. Users have rated it 7.4/10 across 355 reviews.
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Why should I use momondo to find a flight deal from Chicago to Brussels?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Brussels. momondo saves you time and could save you money on your trip.
Can I find flights from Chicago to Brussels with flexible booking policies on momondo?
Flights from Chicago to Brussels with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Chicago to Brussels?
Once all potential Chicago to Brussels flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Chicago to Brussels right now. Can momondo alert me if prices change?
Price alerts on flights to Brussels from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.