Cheapest return flights from Barcelona to Boston in September from 372€

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

Return flights

26 Sep - 28 Sep KLM
22 Sep - 28 Sep KLM
26 Sep - 19 Oct KLM
26 Sep - 04 Oct KLM
24 Sep - 08 Oct Delta
21 Sep - 28 Sep Air France
21 Sep - 27 Sep Air France
21 Sep - 04 Oct Air France
26 Sep - 30 Sep KLM
24 Sep - 30 Sep KLM
25 Sep - 29 Sep Delta
25 Sep - 09 Oct KLM
25 Sep - 01 Oct Delta
21 Sep - 27 Sep Virgin Atlantic direct
21 Sep - 04 Oct Virgin Atlantic direct
27 Sep - 15 Oct Delta
27 Sep - 04 Oct Delta
29 Sep - 07 Oct Delta
23 Sep - 29 Sep Air Canada
25 Sep - 29 Sep Iberia For 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.

Book a cheap hotel in Boston

Cheap car rent in Boston

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