Cheapest return flights from Chicago to Brussels in September from 364€

AirHint found the following cheapest return flights from Chicago (ORD) to Brussels (BRU) in September 2025 (see full year).

Return flights

06 Sep - 13 Sep Icelandair
21 Sep - 28 Sep Scandinavian Airlines
14 Sep - 21 Sep Scandinavian Airlines
16 Sep - 23 Sep Scandinavian Airlines
09 Sep - 16 Sep Icelandair
24 Sep - 01 Oct Icelandair
03 Sep - 10 Sep Icelandair
12 Sep - 19 Sep Icelandair
30 Sep - 07 Oct United
15 Sep - 22 Sep Icelandair
18 Sep - 25 Sep Icelandair
15 Sep - 22 Sep United direct
27 Sep - 04 Oct United

Also check the deals for one-way flights from Chicago to Brussels in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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