Cheapest return flights from Chicago to Brussels in December from $521

Best time to book flights for Chicago (ORD) to Brussels (BRU) flights at AirHint

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

Return flights

08 Dec - 22 Dec British Airways
11 Dec - 25 Dec American Airlines
08 Dec - 22 Dec United direct
11 Dec - 25 Dec United direct
08 Dec - 15 Dec United
18 Dec - 25 Dec United direct
28 Dec - 04 Jan United

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

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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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