AirHint found the following cheapest one-way flights from Barcelona (BCN) to Boston (BOS) in October 2025 (see full year).

One-Way flights

23 Oct	Iberia For Level	direct
16 Oct	Iberia For Level	direct
15 Oct	TAP
22 Oct	Iberia For Level	direct
15 Oct	Iberia For Level	direct
09 Oct	TAP
07 Oct	TAP
19 Oct	Vueling Airlines
30 Oct	Vueling Airlines
06 Oct	TAP

Also check the deals for return 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 one-way flights from Barcelona to Boston in October from $181

One-Way flights