Cheapest one-way flights from Boston to Barcelona in September from $165

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

One-Way flights

30 Sep Iberia For Level direct
28 Sep Iberia For Level direct
29 Sep Iberia For Level direct
27 Sep TAP
26 Sep TAP
24 Sep TAP
23 Sep TAP
22 Sep Iberia For Level direct
21 Sep Iberia For Level direct
25 Sep TAP

Also check the deals for return flights from Boston to Barcelona in September.

Skyscanner

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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