AirHint found the following cheapest return flights from Boston (BOS) to Brussels (BRU) in January 2026 (see full year).

Return flights

13 Jan - 20 Jan	Brussels Airlines
20 Jan - 27 Jan	SWISS
07 Jan - 14 Jan	Brussels Airlines
27 Jan - 03 Feb	United
21 Jan - 28 Jan	United
09 Jan - 16 Jan	Brussels Airlines
05 Jan - 12 Jan	Aer Lingus
11 Jan - 18 Jan	Aer Lingus
15 Jan - 22 Jan	Aer Lingus
19 Jan - 26 Jan	Aer Lingus
23 Jan - 30 Jan	Aer Lingus
25 Jan - 01 Feb	Aer Lingus
29 Jan - 05 Feb	Aer Lingus
31 Jan - 07 Feb	TAP
04 Jan - 06 Feb	Aer Lingus

Also check the deals for one-way flights from Boston to Brussels in January.

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 Boston to Brussels in January from 299€

Return flights