Statistics on Chicago-Brussels flights: what is the right price and when to buy your plane ticket?

Best time to go: what is the RIGHT price for a round-trip flight to Brussels (from: Chicago)

The average price to go to Brussels from Chicago airport is $ 1087 (round trip). However, there are variations depending on the departure month. Thus, it is possible to pay for your plane ticket on average between $ 848 (in november) and $ 1531 (in june), which is a saving of $ 239 or a surplus of $ 445 (compared to the average price) depending on the period you leave.

The analysis of all prices reveals that the most frequent price is between $719 to $774 and it is generally more economical to leave on a wednesday and return on a tuesday on a flight with 1 or more layovers.

Be careful, the cheapest months may correspond to unfavorable weather periods . Check out our page best time to go to Brussels before booking your flight.

If you want to know when to book your flight at the best price, go straight to the second part of this page: When to buy your Chicago-Brussels plane ticket.

How are these data calculated?

We have studied a sample of 50374 airfare prices from previous years for flights to Brussels from Chicago and can thus establish precise and credible price variation trends based on different parameters. Of course, prices can vary from year to year, but the seasonal aspect of this data (recurrence of school holidays, events... from year to year) makes these statistics quite reliable.

Average price depending on the departure month

Created with Highcharts 8.2.2 $888 $888 $871 $871 $1035 $1035 $977 $977 $1191 $1191 $1531 $1531 $1459 $1459 $1151 $1151 $1020 $1020 $954 $954 $848 $848 $1111 $1111Average price of round-trip airfare in USD according to the departure monthjan.feb.mar.apr.mayjun.jul.aug.sep.oct.nov.dec.6008001000120014001600

Data analysis:

By leaving in november, the price of the plane ticket will statistically be the cheapest ($ 848, saving $ 239 compared to the average price over the year which is $ 1087). Conversely, june will be the most expensive ($ 1531).

Flight Chicago-Brussels: when is the best time to go for the best price?

Month Good price* Average price Our opinion
January$ 655 $ 888 good price
February$ 638 $ 871 good price
March$ 755 $ 1035 good price
April$ 753 $ 977 good price
May$ 866 $ 1191 fair price
June$ 1214 $ 1531 very high price
July$ 1212 $ 1459 high price
August$ 882 $ 1151 fair price
September$ 752 $ 1020 good price
October$ 731 $ 954 good price
November$ 656 $ 848 very good price
December$ 786 $ 1111 fair price

*great price to buy your plane ticket: if you see this price or cheaper during your flight search, go for it and buy it!

Price breakdown to travel from Chicago to Brussels

Created with Highcharts 8.2.21%1%3%3%5%5%5%5%4%4%5%5%7%7%5%5%5%5%5%5%6%6%5%5%5%5%4%4%3%3%3%3%2%2%2%2%2%2%2%2%2%2%2%2%2%2%2%2%2%2%2%2%1%1%Percentage of plane tickets found at this price$387 to $…$387 to $443$443 to $498$498 to $553$553 to $608$608 to $664$664 to $719$719 to $774$774 to $829$829 to $885$885 to $940$940 to $995$995 to $1050$1050 to $1106$1106 to $1161$1161 to $1216$1216 to $1271$1271 to $1327$1327 to $1382$1382 to $1437$1437 to $1492$1492 to $1548$1548 to $1603$1603 to $1658$1658 to $1713$1713 to $1769$1769 to $1824$1824 to $187902468

Data analysis:

The prices for flights from Chicago to Brussels range from $387 to $1879. 1% of tickets were purchased at the minimum price (from $387 to $443), 1% at the maximum price (from $1824 to $1879). The majority of plane tickets were purchased in the range of $719 to $774 (7% of tickets).

Cheapest airlines for the Chicago->Brussels flight

There are 9 companies that serve Chicago from Brussels airport: Lufthansa, United, SAS, Brussels Airlines, Aer Lingus, Turkish Airlines, Icelandair, TAP and Spirit Airlines.

Created with Highcharts 8.2.2Lufthansa: 34 %Lufthansa: 34 %United: 26 %United: 26 %SAS: 8 %SAS: 8 %Brussels Airlines: 6 %Brussels Airlines: 6 %Aer Lingus: 4 %Aer Lingus: 4 %Turkish Airlines: 3 %Turkish Airlines: 3 %Icelandair: 3 %Icelandair: 3 %TAP: 3 %TAP: 3 %Spirit Airlines: 2 %Spirit Airlines: 2 %

Data analysis:

Of the 50374 flights analyzed in previous years, Lufthansa was the airline that offered the best fare most often in the flight ticket search results (34% of the time) on the Chicago->Brussels route.

Direct flight or flight with layover?

Created with Highcharts 8.2.2 $1289 $1289 $775 $775Average ticket price: direct flight or flight with layover(s)Direct flightFlight with layover60070080090010001100120013001400

Data analysis:

To get the best price for the Chicago-Brussels flight, you should take a flight with one or more layovers (you will save an average of $ 569 compared to a direct flight).

Which day of the week to leave?

Created with Highcharts 8.2.2 $ +62 $ +62 $ -19 $ -19 $ -23 $ -23 $ -90 $ -90 $ -25 $ -25 $ +17 $ +17 $ +119 $ +119Average airfare price according to the departure daya sundaya mondaya tuesdaya wednesdaya thursdaya fridaya saturday-150-100-50050100150

Data analysis:

Statistically, Chicago-Brussels flights departing on a wednesday are cheaper than on other days of the week. By choosing a wednesday as your departure date, you can save an average of $90. On the other hand, departing on a saturday may cost you an additional $119.

Which day of the week to come back?

Created with Highcharts 8.2.2 $ -16 $ -16 $ -43 $ -43 $ -74 $ -74 $ -59 $ -59 $ +2 $ +2 $ +113 $ +113 $ +107 $ +107Average airfare price based on the return daya sundaya mondaya tuesdaya wednesdaya thursdaya fridaya saturday-100-50050100150

Data analysis:

Statistically, return flights from Brussels to Chicago departing on a tuesday are cheaper than on other days of the week. By choosing a tuesday for your return date, you will save an average of $74. Conversely, departing from Brussels on a friday may cost you an additional $113.

Top prices Chicago-Brussels

Round tripDatesPrice
Chicago → Brussels04-05 to 18-05-2025$ 563 
Chicago → Brussels05-05 to 11-05-2025$ 585 
Chicago → Brussels07-05 to 12-05-2025$ 556 
Chicago → Brussels19-08 to 26-08-2025$ 456 
Chicago → Brussels02-09 to 16-09-2025$ 425 
Chicago → Brussels03-09 to 09-09-2025$ 540 
Chicago → Brussels08-09 to 15-09-2025$ 428 
Chicago → Brussels16-09 to 23-09-2025$ 401 
Chicago → Brussels02-03 to 16-03-2026$ 485 
Chicago → Brussels05-03 to 19-03-2026$ 535 

When to book your flight Chicago - Brussels to get the cheapest price?

Statistically, you will make the biggest savings by buying your plane ticket between 11 to 12 months in advance. However, you may end up paying a high price if you book between 0 to 1 month in advance.

Did you know: the price of plane tickets not only varies depending on how far in advance you book, but also on the day of the week you book! So, to maximize your chances of getting the best price for a Chicago-Brussels flight, it is recommended to book your ticket on a sunday.

How far in advance should I buy my flight?

Created with Highcharts 8.2.2 $1311 $1311 $1034 $1034 $1022 $1022 $1066 $1066 $1043 $1043 $1028 $1028 $1069 $1069 $1082 $1082 $1114 $1114 $1048 $1048 $1059 $1059 $925 $925Average airfare price based on the number of months between booking and flight0 to 1 month1 to 2 months2 to 3 months3 to 4 months4 to 5 months5 to 6 months6 to 7 months7 to 8 months8 to 9 months9 to 10 months10 to 11 months11 to 12 months80090010001100120013001400

Data analysis:

To get the cheapest flight ticket from Chicago to Brussels, it is recommended to buy it 11 to 12 months before departure (it is then on average 925 $, which is a saving of 162 $ compared to the overall average price). On the other hand, if you buy your ticket 0 to 1 month in advance, you will pay the full price (224 $ more than the average price).

Depending on the departure month

The best time to buy your Chicago to Brussels flight ticket may vary depending on your departure month. Therefore, we offer you statistics on when to book your flight month by month.

Departure on... How far in advance should I book?
January

Best time: 5 to 6 months before departure (average price: 689 $)

Other interesting period(s): 1 to 2 months ($ 847), 2 to 3 months ($ 765), 3 to 4 months ($ 804), 4 to 5 months ($ 725), 6 to 7 months ($ 734), 10 to 11 months ($ 733)
February

Best time: 5 to 6 months before departure (average price: 682 $)

Other interesting period(s): 1 to 2 months ($ 853), 2 to 3 months ($ 729), 3 to 4 months ($ 721), 4 to 5 months ($ 739), 6 to 7 months ($ 688)
March

Best time: 9 to 10 months before departure (average price: 794 $)

Other interesting period(s): 2 to 3 months ($ 1035), 3 to 4 months ($ 885), 4 to 5 months ($ 879), 5 to 6 months ($ 873), 6 to 7 months ($ 812), 7 to 8 months ($ 848)
April

Best time: 9 to 10 months before departure (average price: 912 $)

Other interesting period(s): 0 to 1 month ($ 972), 1 to 2 months ($ 964), 4 to 5 months ($ 955), 5 to 6 months ($ 932), 6 to 7 months ($ 936), 7 to 8 months ($ 948)
May

Best time: 1 to 2 months before departure (average price: 967 $)

Other interesting period(s): 2 to 3 months ($ 1150), 9 to 10 months ($ 1092)
June

Best time: 7 to 8 months before departure (average price: 1369 $)

Other interesting period(s): 1 to 2 months ($ 1435), 2 to 3 months ($ 1381), 3 to 4 months ($ 1518), 6 to 7 months ($ 1519), 8 to 9 months ($ 1527), 9 to 10 months ($ 1408), 10 to 11 months ($ 1456)
July

Best time: 3 to 4 months before departure (average price: 1309 $)

Other interesting period(s): 1 to 2 months ($ 1432), 2 to 3 months ($ 1331), 4 to 5 months ($ 1359), 7 to 8 months ($ 1439), 8 to 9 months ($ 1369), 9 to 10 months ($ 1428), 10 to 11 months ($ 1403)
August

Best time: 3 to 4 months before departure (average price: 1029 $)

Other interesting period(s): 1 to 2 months ($ 1075), 2 to 3 months ($ 1034), 4 to 5 months ($ 1104), 5 to 6 months ($ 1093)
September

Best time: 5 to 6 months before departure (average price: 843 $)

Other interesting period(s): 1 to 2 months ($ 944), 2 to 3 months ($ 984), 3 to 4 months ($ 1016), 4 to 5 months ($ 965), 6 to 7 months ($ 901), 9 to 10 months ($ 928)
October

Best time: 7 to 8 months before departure (average price: 807 $)

Other interesting period(s): 1 to 2 months ($ 923), 2 to 3 months ($ 849), 3 to 4 months ($ 871), 4 to 5 months ($ 848), 5 to 6 months ($ 838), 6 to 7 months ($ 875), 10 to 11 months ($ 890)
November

Best time: 2 to 3 months before departure (average price: 730 $)

Other interesting period(s): 3 to 4 months ($ 749), 4 to 5 months ($ 735), 5 to 6 months ($ 755), 6 to 7 months ($ 755), 7 to 8 months ($ 807), 8 to 9 months ($ 816)
December

Best time: 9 to 10 months before departure (average price: 796 $)

Other interesting period(s): 2 to 3 months ($ 1101), 3 to 4 months ($ 931), 4 to 5 months ($ 907), 5 to 6 months ($ 930), 6 to 7 months ($ 996), 8 to 9 months ($ 850), 10 to 11 months ($ 964)

What day of the week should I book my flight ticket?

Created with Highcharts 8.2.2 $ -58 $ -58 $ +12 $ +12 $ +8 $ +8 $ +24 $ +24 $ +29 $ +29 $ +17 $ +17 $ -2 $ -2Average price of plane ticket according to the booking daysundaymondaytuesdaywednesdaythursdayfridaysaturday-80-60-40-2002040

Data analysis:

Statistically, sunday is the day when plane tickets for Chicago->Brussels are the cheapest. So, by buying your plane ticket on a sunday, you will save $58. Conversely, by buying it on a thursday, you may end up paying $29 more.

Chicago to Brussels: flight price when booking today

Information: this data is not statistics but comes from real prices collected less than 7 days ago. Some months may not be available as we do not have enough data for them.

Month Current price
April 2025$ 1846
$625 to $2654		Find a flight
May 2025$ 1178
$502 to $1730		Find a flight
June 2025$ 1615
$784 to $3154		Find a flight
July 2025$ 1445
$876 to $2017		Find a flight
August 2025$ 1180
$456 to $1556		Find a flight
September 2025$ 1074
$399 to $2253		Find a flight
October 2025$ 915
$380 to $1462		Find a flight
November 2025$ 919
$788 to $1393		Find a flight
December 2025$ 928
$782 to $1513		Find a flight
March 2026$ 510
$485 to $535		Find a flight

Data analysis:

Compared to the average price, may, july, october, december and march are cheaper to travel to Brussels. So it may be interesting to book now to leave during these months!

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