Cheapest return flights from Chicago to Brussels in December from $434

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

Return flights

07 Dec - 14 Dec Scandinavian Airlines
03 Dec - 10 Dec TAP
01 Dec - 05 Dec Scandinavian Airlines
05 Dec - 12 Dec Scandinavian Airlines
01 Dec - 08 Dec Scandinavian Airlines
08 Dec - 15 Dec Scandinavian Airlines
26 Dec - 17 Jan Scandinavian Airlines
06 Dec - 13 Dec Scandinavian Airlines
15 Dec - 19 Jan Aer Lingus
31 Dec - 07 Jan Scandinavian Airlines
13 Dec - 19 Jan Aer Lingus
03 Dec - 27 Dec TAP
17 Dec - 07 Jan Aer Lingus
14 Dec - 24 Dec TAP
13 Dec - 18 Dec Aer Lingus
18 Dec - 10 Jan Aer Lingus
28 Dec - 04 Jan Scandinavian Airlines
22 Dec - 01 Jan Spirit Airlines
29 Dec - 05 Jan Scandinavian Airlines
19 Dec - 05 Jan Air Canada

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

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