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

Return flights

01 May - 06 May	Iberia	direct
08 May - 11 May	Iberia	direct
01 May - 04 May	Iberia	direct
05 May - 11 May	Iberia	direct
07 May - 18 May	Iberia	direct
01 May - 05 May	LEVEL	direct
21 May - 25 May	Iberia	direct
11 May - 18 May	Iberia	direct
18 May - 25 May	Iberia	direct
09 May - 12 May	Iberia	direct
25 May - 01 Jun	Iberia
29 May - 01 Jun	Iberia
27 May - 03 Jun	Iberia	direct
28 May - 04 Jun	Iberia	direct
26 May - 02 Jun	Iberia	direct
29 May - 05 Jun	Iberia	direct
31 May - 07 Jun	Iberia
30 May - 02 Jun	Iberia	direct
30 May - 06 Jun	Iberia	direct
31 May - 03 Jun	Iberia

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

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 May from 354€

Return flights