Cheapest return flights from Boston to Barcelona in September from 244€

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

Return flights

21 Sep - 05 Oct Iberia For Level direct
23 Sep - 30 Sep Iberia For Level direct
21 Sep - 07 Oct Iberia For Level direct
21 Sep - 03 Oct Iberia For Level direct
21 Sep - 06 Oct Iberia For Level direct
22 Sep - 03 Oct Iberia For Level direct
30 Sep - 14 Oct Iberia For Level direct
30 Sep - 06 Oct Iberia For Level direct
30 Sep - 24 Oct Iberia For Level direct
30 Sep - 22 Oct Iberia For Level direct
29 Sep - 07 Oct Iberia For Level direct
16 Sep - 21 Sep Iberia For Level direct
12 Sep - 23 Sep Iberia For Level direct
02 Sep - 10 Sep Iberia For Level direct
21 Sep - 28 Sep Iberia For Level direct
14 Sep - 21 Sep Iberia For Level direct
21 Sep - 26 Sep Iberia For Level direct
02 Sep - 05 Sep Iberia For Level direct
16 Sep - 23 Sep Iberia For Level direct
04 Sep - 15 Sep Iberia For Level direct

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

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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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