Cheapest one-way flights from Boston to Barcelona in September from 160€

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

One-Way flights

14 Sep Icelandair
29 Sep Iberia For Level direct
21 Sep Icelandair
28 Sep Icelandair
15 Sep Icelandair
24 Sep Icelandair
28 Sep Iberia For Level direct
23 Sep Icelandair
20 Sep Spirit Airlines
01 Sep Icelandair

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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