Cheapest return flights from Boston to Brussels in September from 337€

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

Return flights

01 Sep - 17 Sep Aer Lingus
09 Sep - 16 Sep SWISS
10 Sep - 17 Sep Lufthansa
04 Sep - 27 Sep Icelandair
21 Sep - 25 Sep Aer Lingus
16 Sep - 23 Sep SWISS
23 Sep - 30 Sep SWISS
11 Sep - 18 Sep SWISS
04 Sep - 08 Sep SWISS
17 Sep - 24 Sep Lufthansa

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

Skyscanner

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.

Book a cheap hotel in Brussels

Cheap car rent in Brussels

Feel free to contact us with any feedback or request another flight research.