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

Return flights

12 Aug - 25 Aug	Air Canada
05 Aug - 18 Aug	Air Canada
10 Aug - 25 Aug	Air Canada
17 Aug - 26 Aug	Air Canada
18 Aug - 25 Aug	Air Canada
18 Aug - 26 Aug	Air Canada
19 Aug - 26 Aug	Air Canada
11 Aug - 25 Aug	Air Canada
10 Aug - 19 Aug	Air Canada
11 Aug - 18 Aug	Air Canada
18 Aug - 03 Sep	SWISS
25 Aug - 08 Sep	Air Canada
26 Aug - 09 Sep	Air Canada
17 Aug - 03 Sep	Air Canada
24 Aug - 09 Sep	Air Canada
25 Aug - 09 Sep	Air Canada
26 Aug - 11 Sep	SWISS
19 Aug - 02 Sep	SWISS
23 Aug - 11 Sep	SWISS
24 Aug - 11 Sep	Air Canada

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

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 August from $363

Return flights