AirHint found the following cheapest return flights from Boston (BOS) to Brussels (BRU) in October 2025 (see full year).

Return flights

28 Oct - 11 Nov	Brussels Airlines
28 Oct - 04 Nov	Brussels Airlines
20 Oct - 04 Nov	Air Canada
28 Oct - 18 Nov	Iberia
29 Oct - 12 Nov	Air Canada
22 Oct - 07 Nov	Air Canada
25 Oct - 21 Nov	Air Canada
20 Oct - 05 Nov	Air Canada
20 Oct - 11 Nov	Air Canada
28 Oct - 12 Nov	Air Canada
21 Oct - 31 Oct	Aer Lingus
14 Oct - 21 Oct	Aer Lingus
05 Oct - 18 Oct	Icelandair
21 Oct - 28 Oct	Brussels Airlines
22 Oct - 29 Oct	Brussels Airlines
14 Oct - 28 Oct	Air Canada
22 Oct - 26 Oct	Brussels Airlines
20 Oct - 27 Oct	Air Canada
24 Oct - 31 Oct	Air Canada

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

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 October from 312€

Return flights