Cheapest return flights from Chicago to Brussels in December from 612€

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

Return flights

29 Dec - 15 Jan Icelandair
30 Dec - 18 Jan LOT
25 Dec - 11 Jan SWISS
27 Dec - 10 Jan Frontier Airlines
24 Dec - 07 Jan SWISS
26 Dec - 11 Jan Scandinavian Airlines
27 Dec - 08 Jan Aer Lingus
24 Dec - 05 Jan SWISS
25 Dec - 30 Dec LOT
27 Dec - 05 Jan SWISS
30 Dec - 04 Jan Icelandair
25 Dec - 30 Dec Brussels Airlines direct

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

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