Cheapest return flights from Barcelona to Boston in September from $443

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

15 Sep - 30 Sep LEVEL direct
08 Sep - 23 Sep LEVEL direct
25 Sep - 15 Oct LEVEL direct
28 Sep - 15 Oct Iberia
28 Sep - 15 Oct LEVEL direct
21 Sep - 08 Oct TAP
01 Sep - 07 Sep LEVEL direct
01 Sep - 15 Sep LEVEL direct
09 Sep - 14 Sep LEVEL direct
09 Sep - 16 Sep LEVEL direct
10 Sep - 01 Oct Finnair
19 Sep - 26 Sep LEVEL direct
12 Sep - 26 Sep LEVEL direct
11 Sep - 01 Oct Finnair
09 Sep - 18 Sep Finnair
10 Sep - 17 Sep Finnair
10 Sep - 01 Oct LEVEL direct
12 Sep - 04 Oct TAP
12 Sep - 04 Oct Virgin Atlantic 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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