AirHint found the following cheapest return flights from Barcelona (BCN) to Boston (BOS) in August 2026 (see full year).

Return flights

28 Aug - 31 Aug	LEVEL	direct
31 Aug - 07 Sep	Iberia	direct
30 Aug - 06 Sep	Iberia	direct
26 Aug - 02 Sep	Iberia	direct
30 Aug - 02 Sep	Iberia	direct
26 Aug - 29 Aug	Iberia	direct
27 Aug - 03 Sep	Iberia
28 Aug - 04 Sep	Iberia
31 Aug - 03 Sep	Iberia	direct
05 Aug - 17 Aug	Condor
06 Aug - 17 Aug	Condor
06 Aug - 18 Aug	Condor
05 Aug - 18 Aug	Condor
25 Aug - 30 Aug	Iberia
18 Aug - 02 Sep	Condor
25 Aug - 01 Sep	Iberia
29 Aug - 05 Sep	Iberia
23 Aug - 29 Aug	Wizz Air Malta
07 Aug - 17 Aug	LEVEL	direct
07 Aug - 17 Aug	Condor

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

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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Cheapest return flights from Barcelona to Boston in August from $542

Return flights