Cheapest one-way flights from Boston to Barcelona in September from $210

AirHint found the following cheapest one-way flights from Boston (BOS) to Barcelona (BCN) in September 2026 (see full year).

One-Way flights

06 Sep LEVEL direct
08 Sep LEVEL direct
04 Sep Lufthansa
09 Sep Brussels Airlines
24 Sep Iberia direct
29 Sep Iberia direct
30 Sep Iberia direct
19 Sep Iberia direct
20 Sep Iberia direct
21 Sep Iberia direct

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

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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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