Cheapest return flights from Barcelona to Boston in September from $305

Best time to book flights for Barcelona (BCN) to Boston (BOS) flights at AirHint

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

Return flights

10 Sep - 21 Sep Fly Play
12 Sep - 23 Sep Fly Play
10 Sep - 16 Sep Fly Play
03 Sep - 14 Sep Fly Play
12 Sep - 23 Sep LEVEL direct
04 Sep - 08 Sep LEVEL direct
10 Sep - 16 Sep LEVEL direct
03 Sep - 14 Sep LEVEL direct
03 Sep - 10 Sep LEVEL direct
16 Sep - 30 Sep LEVEL direct
19 Sep - 03 Oct LEVEL direct

Also check the deals for one-way flights from Barcelona to Boston 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.

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