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

Return flights

07 Oct - 14 Oct	LEVEL	direct
08 Oct - 14 Oct	LEVEL	direct
07 Oct - 13 Oct	LEVEL	direct
06 Oct - 13 Oct	Iberia	direct
06 Oct - 09 Oct	Iberia	direct
14 Oct - 17 Oct	Iberia	direct
15 Oct - 18 Oct	Iberia	direct
20 Oct - 23 Oct	Iberia	direct
22 Oct - 29 Oct	Iberia	direct
29 Oct - 05 Nov	Iberia	direct
03 Oct - 06 Oct	Iberia	direct
20 Oct - 07 Nov	LEVEL	direct
31 Oct - 03 Nov	Iberia	direct
31 Oct - 07 Nov	Iberia	direct
29 Oct - 01 Nov	Iberia
28 Oct - 04 Nov	Iberia
30 Oct - 06 Nov	Iberia
25 Oct - 01 Nov	Iberia

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

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 October from 394€

Return flights