Cheapest return flights from Boston to Barcelona in September from 368€

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

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

Return flights

02 Sep - 08 Sep Fly Play
17 Sep - 25 Sep Fly Play
08 Sep - 17 Sep Fly Play
16 Sep - 25 Sep Fly Play
21 Sep - 28 Sep Scandinavian Airlines
14 Sep - 20 Sep Fly Play
18 Sep - 25 Sep Vueling Airlines direct
20 Sep - 27 Sep Fly Play
22 Sep - 07 Oct LEVEL direct
01 Sep - 05 Sep Fly Play
21 Sep - 28 Sep LEVEL direct

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