$248+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRU
Oct 1 — Oct 81
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Brussels with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Illinois to BrusselsExplore 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 September 1, 2026.
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 September 1, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 8/28. 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.
Mon 11/96:30 pm -
1 stop10h 25m
Thu 11/1912:50 pm -
1 stop11h 30m
Deal found 8/28![Icelandair logo]()
$552
This Cheapflightsfares deal was found by Cheapflights users on 8/31. 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.
Mon 11/96:30 pm -
1 stop10h 25m
Sun 11/2212:50 pm -
1 stop11h 30m
Deal found 8/31![Icelandair logo]()
$556
This Ticket deal was found by Cheapflights users on 8/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/258:15 pm -
1 stop17h 35m
Tue 11/37:15 pm -
1 stop28h 30m
Deal found 8/30![Scandinavian Airlines logo]()
$580
This eDestinos deal was found by Cheapflights users on 8/27. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:15 pm -
1 stop12h 20m
Fri 10/237:10 pm -
1 stop28h 00m
Deal found 8/27![Scandinavian Airlines logo]()
$611
This SmartFares deal was found by Cheapflights users on 8/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:15 pm -
1 stop12h 20m
Mon 10/198:30 pm -
1 stop26h 40m
Deal found 8/28![Scandinavian Airlines logo]()
$612
This Booking.com deal was found by Cheapflights users on 8/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:15 pm -
1 stop16h 15m
Wed 10/218:30 pm -
1 stop26h 40m
Deal found 8/30![Scandinavian Airlines logo]()
$622
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Mon 12/710:50 am -
2 stops19h 25m
Fri 12/1110:00 am -
2 stops37h 19m
Deal found 8/28![United Airlines logo]()
$727
This Mytrip deal was found by Cheapflights users on 8/28. 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.
Mon 11/96:30 pm -
2 stops18h 05m
Thu 11/195:30 pm -
2 stops29h 00m
Deal found 8/28![Multiple Airlines logo]()
$729
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:30 pm -
2 stops21h 05m
Tue 11/39:05 pm -
2 stops25h 25m
Deal found 9/1![Multiple Airlines logo]()
$738
This Delta deal was found by Cheapflights users on 8/28. 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.
Mon 11/911:27 am -
2 stops13h 08m
Thu 11/196:15 am -
2 stops17h 24m
Deal found 8/28![Delta logo]()
$765
This Mytrip deal was found by Cheapflights users on 8/31. 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.
Fri 10/27:15 pm -
2 stops17h 25m
Sun 10/114:05 pm -
2 stops31h 05m
Deal found 8/31![Multiple Airlines logo]()
$770
This Mytrip deal was found by Cheapflights users on 8/27. 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 9/2711:25 am -
2 stops24h 35m
Tue 10/62:45 pm -
2 stops25h 55m
Deal found 8/27![Multiple Airlines logo]()
$791
Best flights from Illinois to BrusselsDiscover carefully curated flight deals from Illinois to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
Discover carefully curated flight deals from Illinois to Brussels that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 1, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 8/31. 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.
Sat 10/177:15 pm -
2 stops16h 05m
Wed 10/218:30 pm -
1 stop26h 40m
Deal found 8/31![Scandinavian Airlines logo]()
$661
This United Airlines deal was found by Cheapflights users on 8/28. 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.
Mon 12/710:50 am -
2 stops19h 25m
Fri 12/1110:00 am -
2 stops37h 19m
Deal found 8/28![United Airlines logo]()
$727
This Mytrip deal was found by Cheapflights users on 8/28. 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.
Mon 11/96:30 pm -
2 stops18h 05m
Thu 11/195:30 pm -
2 stops29h 00m
Deal found 8/28![Multiple Airlines logo]()
$729
This Delta deal was found by Cheapflights users on 8/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2510:59 am -
1 stop18h 01m
Tue 11/38:05 am -
2 stops16h 55m
Deal found 8/30![Delta logo]()
$886
This Priceline deal was found by Cheapflights users on 8/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/511:31 am -
2 stops16h 19m
Mon 7/58:50 pm -
1 stop29h 40m
Deal found 8/28![British Airways logo]()
$903
This KLM deal was found by Cheapflights users on 8/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:59 am -
1 stop13h 41m
Sun 10/119:45 am -
1 stop19h 48m
Deal found 8/31![KLM logo]()
$1,048
This United Airlines deal was found by Cheapflights users on 8/27. 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 11/115:45 pm -
1 stop12h 30m
Wed 11/1810:10 am -
Nonstop9h 00m
Deal found 8/27![United Airlines logo]()
$730
This Mytrip deal was found by Cheapflights users on 8/27. 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 9/2711:25 am -
2 stops24h 35m
Tue 10/62:45 pm -
2 stops25h 55m
Deal found 8/27![Multiple Airlines logo]()
$791
This Mytrip deal was found by Cheapflights users on 8/27. 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.
Wed 11/117:05 am -
2 stops23h 20m
Wed 11/186:20 am -
2 stops20h 45m
Deal found 8/27![Multiple Airlines logo]()
$803
This United Airlines deal was found by Cheapflights users on 8/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/65:50 pm -
Nonstop8h 05m
Sat 12/129:45 am -
1 stop32h 00m
Deal found 8/30![United Airlines logo]()
$852
This Delta deal was found by Cheapflights users on 8/31. 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.
Sat 10/244:19 pm -
1 stop12h 41m
Thu 11/1910:45 am -
2 stops14h 19m
Deal found 8/31![Delta logo]()
$946
This British Airways deal was found by Cheapflights users on 8/31. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/179:46 am -
2 stops16h 34m
Mon 2/227:00 am -
2 stops21h 00m
Deal found 8/31![Multiple Airlines logo]()
$808
This Scandinavian Airlines deal was found by Cheapflights users on 8/28. 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.
Tue 9/227:15 pm -
1 stop12h 20m
Fri 9/2510:20 am -
1 stop12h 50m
Deal found 8/28![Scandinavian Airlines logo]()
$1,028
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Sat 10/245:56 pm -
1 stop31h 54m
Thu 11/1910:10 am -
Nonstop9h 00m
Deal found 8/31![United Airlines logo]()
$866
This KLM deal was found by Cheapflights users on 8/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:00 pm -
1 stop11h 40m
Thu 10/19:45 am -
1 stop13h 30m
Deal found 8/27![KLM logo]()
$1,077
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/146:30 pm -
2 stops19h 40m
Mon 1/186:20 am -
2 stops19h 55m
Deal found 9/1![Multiple Airlines logo]()
$817
This United Airlines deal was found by Cheapflights users on 8/31. 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 2/175:50 pm -
Nonstop8h 05m
Mon 2/2210:10 am -
Nonstop9h 00m
Deal found 8/31![United Airlines logo]()
$874
This Delta deal was found by Cheapflights users on 8/27. 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.
Thu 10/1510:59 am -
1 stop13h 41m
Fri 10/239:45 am -
1 stop13h 29m
Deal found 8/27![Delta logo]()
$1,077
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:40 pm -
1 stop35h 00m
Tue 11/39:05 pm -
2 stops25h 25m
Deal found 9/1![Multiple Airlines logo]()
$832
This KLM deal was found by Cheapflights users on 8/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:59 am -
1 stop13h 41m
Mon 10/129:45 am -
1 stop13h 29m
Deal found 8/28![KLM logo]()
$1,128
This Delta deal was found by Cheapflights users on 8/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:59 am -
1 stop13h 41m
Mon 10/2612:55 pm -
1 stop15h 38m
Deal found 8/29![Delta logo]()
$1,078
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 1/295:45 pm -
1 stop12h 30m
Sun 2/710:10 am -
Nonstop9h 00m
Deal found 8/31![United Airlines logo]()
$891
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Wed 11/258:05 pm -
1 stop13h 05m
Mon 11/309:25 pm -
2 stops26h 20m
Deal found 8/31![Multiple Airlines logo]()
$840
This United Airlines deal was found by Cheapflights users on 8/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:45 pm -
1 stop14h 30m
Mon 11/3010:10 am -
Nonstop9h 00m
Deal found 8/30![United Airlines logo]()
$950
This Delta deal was found by Cheapflights users on 8/28. 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.
Fri 10/96:44 pm -
2 stops12h 56m
Mon 10/126:20 am -
2 stops18h 40m
Deal found 8/28![Delta logo]()
$1,154
This Mytrip deal was found by Cheapflights users on 8/31. 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.
Wed 10/711:25 am -
2 stops19h 30m
Sun 10/114:20 pm -
2 stops24h 20m
Deal found 8/31![Multiple Airlines logo]()
$882
This United Airlines deal was found by Cheapflights users on 8/27. 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 12/25:50 pm -
Nonstop8h 05m
Wed 12/910:10 am -
Nonstop9h 00m
Deal found 8/27![United Airlines logo]()
$972
This Travelocity deal was found by Cheapflights users on 9/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/53:40 pm -
1 stop21h 40m
Mon 7/510:50 am -
2 stops20h 26m
Deal found 9/1![Multiple Airlines logo]()
$897
This Mytrip deal was found by Cheapflights users on 8/27. 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 9/247:25 pm -
2 stops20h 30m
Thu 10/18:35 am -
2 stops16h 40m
Deal found 8/27![Multiple Airlines logo]()
$910
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/76:00 pm -
Nonstop8h 00m
Sun 10/1110:15 am -
Nonstop8h 45m
Deal found 8/31![United Airlines logo]()
$1,033
Last-minute flights from Illinois to BrusselsDiscover last-minute flight deals from Illinois to Brussels. Data last updated September 1, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Brussels. Data last updated September 1, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/27. 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 9/2711:25 am -
2 stops24h 35m
Tue 10/62:45 pm -
2 stops25h 55m
Deal found 8/27![Multiple Airlines logo]()
$791
This Mytrip deal was found by Cheapflights users on 8/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:35 pm -
2 stops22h 00m
Mon 10/58:50 am -
2 stops34h 45m
Deal found 8/29![Multiple Airlines logo]()
$818
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:25 am -
2 stops27h 50m
Tue 10/62:30 pm -
2 stops26h 10m
Deal found 9/1![Multiple Airlines logo]()
$819
This Mytrip deal was found by Cheapflights users on 8/31. 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.
Fri 10/27:15 pm -
2 stops17h 25m
Sun 10/114:05 pm -
2 stops31h 05m
Deal found 8/31![Multiple Airlines logo]()
$770
This Mytrip deal was found by Cheapflights users on 8/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:15 pm -
2 stops18h 25m
Sun 10/188:35 pm -
2 stops26h 35m
Deal found 8/30![Multiple Airlines logo]()
$795
This SmartFares deal was found by Cheapflights users on 8/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:15 pm -
1 stop12h 20m
Mon 10/198:30 pm -
1 stop26h 40m
Deal found 8/28![Scandinavian Airlines logo]()
$612
This Booking.com deal was found by Cheapflights users on 8/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:15 pm -
1 stop16h 15m
Wed 10/218:30 pm -
1 stop26h 40m
Deal found 8/30![Scandinavian Airlines logo]()
$622
This eDestinos deal was found by Cheapflights users on 8/27. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:15 pm -
1 stop12h 20m
Fri 10/237:10 pm -
1 stop28h 00m
Deal found 8/27![Scandinavian Airlines logo]()
$611
This Cheapflightsfares deal was found by Cheapflights users on 8/28. 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.
Sun 10/187:15 pm -
1 stop12h 20m
Wed 10/2110:20 am -
1 stop12h 50m
Deal found 8/28![Scandinavian Airlines logo]()
$624
This Ticket deal was found by Cheapflights users on 8/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/258:15 pm -
1 stop17h 35m
Tue 11/37:15 pm -
1 stop28h 30m
Deal found 8/30![Scandinavian Airlines logo]()
$580
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:30 pm -
2 stops21h 05m
Tue 11/39:05 pm -
2 stops25h 25m
Deal found 9/1![Multiple Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/2811:29 am -
1 stop14h 36m
Wed 11/1110:00 am -
2 stops33h 10m
Deal found 8/31![United Airlines logo]()
$808
One-way flights from Illinois to BrusselsSearch for one-way flight options from Illinois to Brussels. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.
Search for one-way flight options from Illinois to Brussels. Find affordable one-way fares based on user searches. Data last updated September 1, 2026.
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:30 pm -
1 stop10h 25m
Deal found 9/1![Icelandair logo]()
$248
This Mytrip deal was found by Cheapflights users on 8/28. 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.
Fri 10/167:25 pm -
1 stop10h 30m
Deal found 8/28![Icelandair logo]()
$249
This Mytrip deal was found by Cheapflights users on 8/31. 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 10/157:25 pm -
1 stop10h 30m
Deal found 8/31![Icelandair logo]()
$251
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:25 pm -
1 stop10h 30m
Deal found 9/1![Icelandair logo]()
$252
This oojo deal was found by Cheapflights users on 8/30. 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.
Wed 10/287:30 pm -
1 stop10h 25m
Deal found 8/30![Icelandair logo]()
$254
This oojo deal was found by Cheapflights users on 8/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:25 pm -
1 stop31h 30m
Deal found 8/29![Icelandair logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:25 pm -
1 stop10h 30m
Deal found 8/29![Icelandair logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 pm -
1 stop10h 25m
Deal found 8/29![Icelandair logo]()
$271
This oojo deal was found by Cheapflights users on 8/28. 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.
Sat 10/107:25 pm -
1 stop10h 30m
Deal found 8/28![Icelandair logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:25 pm -
2 stops20h 30m
Deal found 8/29![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Tue 9/297:25 pm -
2 stops20h 30m
Deal found 8/31![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Fri 10/1610:25 pm -
2 stops33h 55m
Deal found 8/28![Multiple Airlines logo]()
$319
Find flight deals from Illinois to Brussels
Keep the following information in mind while searching for Illinois to Brussels flight deals. Data was last updated September 1, 2026.
Round-trip from | $552 (Cheapflightsfares) |
|---|---|
One-way from | $248 (Mytrip) |
Popular in | June |
Cheapest in | February |
Average price | $813 |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated September 1, 2026.
Use the filters below to find and compare flights from Illinois to Brussels that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBrussels
ORD Chicago O'Hare Intl - BRU Brussels Bruxelles-National
ORDBRU
Chicago O'Hare Intl
Sat 10/17
7:15 pm-6:20 pm
2 stops16h 05m
Brussels Bruxelles-National
Wed 10/21
8:30 pm-4:10 pm
1 stop26h 40m
$661
St. LouisBrussels
STL Lambert-St Louis - BRU Brussels Bruxelles-National
STLBRU
Lambert-St Louis
Mon 12/7
10:50 am-1:15 pm
2 stops19h 25m
Brussels Bruxelles-National
Fri 12/11
10:00 am-4:19 pm
2 stops37h 19m
$727
ChicagoBrussels
ORD Chicago O'Hare Intl - CRL Charleroi Brussels
ORDCRL
Chicago O'Hare Intl
Mon 11/9
6:30 pm-7:35 pm
2 stops18h 05m
Charleroi Brussels
Thu 11/19
5:30 pm-3:30 pm
2 stops29h 00m
$729
ChicagoBrussels
ORD Chicago O'Hare Intl - BRU Brussels Bruxelles-National
ORDBRU
Chicago O'Hare Intl
Wed 11/11
5:45 pm-1:15 pm
1 stop12h 30m
Brussels Bruxelles-National
Wed 11/18
10:10 am-12:10 pm
Nonstop9h 00m
$730
ChicagoBrussels
ORD Chicago O'Hare Intl - CRL Charleroi Brussels
ORDCRL
Chicago O'Hare Intl
Sun 9/27
11:25 am-7:00 pm
2 stops24h 35m
Charleroi Brussels
Tue 10/6
2:45 pm-9:40 am
2 stops25h 55m
$791
ChicagoBrussels
ORD Chicago O'Hare Intl - CRL Charleroi Brussels
ORDCRL
Chicago O'Hare Intl
Wed 11/11
7:05 am-1:25 pm
2 stops23h 20m
Charleroi Brussels
Wed 11/18
6:20 am-8:05 pm
2 stops20h 45m
$803
ChicagoBrussels
ORD Chicago O'Hare Intl - BRU Brussels Bruxelles-National
ORDBRU
Chicago O'Hare Intl
Wed 2/17
9:46 am-9:20 am
2 stops16h 34m
Brussels Bruxelles-National
Mon 2/22
7:00 am-9:00 pm
2 stops21h 00m
$808
ChicagoBrussels
ORD Chicago O'Hare Intl - CRL Charleroi Brussels
ORDCRL
Chicago O'Hare Intl
Thu 1/14
6:30 pm-9:10 pm
2 stops19h 40m
Charleroi Brussels
Mon 1/18
6:20 am-7:15 pm
2 stops19h 55m
$817
ChicagoBrussels
ORD Chicago O'Hare Intl - CRL Charleroi Brussels
ORDCRL
Chicago O'Hare Intl
Sun 10/25
6:40 pm-11:40 am
1 stop35h 00m
Charleroi Brussels
Tue 11/3
9:05 pm-3:30 pm
2 stops25h 25m
$832
ChicagoBrussels
ORD Chicago O'Hare Intl - CRL Charleroi Brussels
ORDCRL
Chicago O'Hare Intl
Wed 11/25
8:05 pm-4:10 pm
1 stop13h 05m
Charleroi Brussels
Mon 11/30
9:25 pm-4:45 pm
2 stops26h 20m
$840
Showing 1-10 of 60 resultsSorted by cheapest first
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.
ORD-BRU
ORD-CRL
STL-BRU
MDW-BRU
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
USIL-BR1
ORD-BRU
ORD-CRL
STL-BRU
MDW-BRU
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 $632). Flying from Illinois to Brussels in June is currently the most expensive (average of $1,489). 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 September 1, 2026.
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 September 1, 2026.
The most flights from USIL to BR1 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).
How much does it cost to fly round-trip from Illinois to Brussels?
Airfare is below average for this route at the moment.
Illinois to Brussels flights typically cost between $743 and $1,150 in November.The cheapest round-trip price found within the last 5 days was $552 on Icelandair (Nov 9-Nov 19).
How far ahead should I book a flight from Illinois to Brussels?
Booking 32 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Brussels. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
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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.
Complete your trip
Complete your trip to Brussels by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Brussels by cabin class
Find flights from Illinois to Brussels, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Brussels flights
Browse other Illinois and Brussels flight options. Last updated on September 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Brussels flights
Consider these flights traveling from Illinois to Brussels.
Top 7 airlines flying from Illinois to Brussels
Discover the top 7 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 7,457,451 searches. Data last updated September 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$433 | Average$665 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$444 | Average$463 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$477 | Average$671 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$531 | Average$751 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$752 | Average$1,656 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$849 | Average$1,352 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$969 | Average$1,369 | FlexibilityNo cancel fee | On-time76% |