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

Return flights

31 Dec - 24 Jan	Aer Lingus
05 Dec - 14 Dec	TAP
08 Dec - 10 Dec	American Airlines
08 Dec - 14 Dec	Scandinavian Airlines
08 Dec - 15 Dec	Scandinavian Airlines
31 Dec - 08 Jan	Aer Lingus
07 Dec - 10 Dec	Scandinavian Airlines
07 Dec - 14 Dec	Scandinavian Airlines
07 Dec - 12 Dec	Scandinavian Airlines
31 Dec - 06 Jan	Aer Lingus
08 Dec - 11 Dec	Finnair
30 Dec - 24 Jan	Aer Lingus
05 Dec - 12 Dec	Scandinavian Airlines
29 Dec - 24 Jan	Aer Lingus
04 Dec - 08 Dec	TAP
12 Dec - 06 Jan	Aer Lingus
28 Dec - 31 Jan	Finnair
25 Dec - 17 Jan	Finnair
28 Dec - 17 Jan	Finnair
16 Dec - 24 Jan	Scandinavian Airlines

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

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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Cheapest return flights from New York to Brussels in December from $415

Return flights