Cheapest one-way flights from Boston to Barcelona in September from 171€

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

One-Way flights

07 Sep Iberia For Level direct
06 Sep Iberia For Level direct
13 Sep Iberia For Level direct
16 Sep Iberia For Level direct
02 Sep Iberia For Level direct
03 Sep Iberia For Level direct
30 Sep Iberia For Level direct
28 Sep Iberia For Level direct
29 Sep Iberia For Level direct
14 Sep Iberia direct

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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