Cheapest return flights from Boston to Barcelona in September from 361€

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

Return flights

15 Sep - 22 Sep Iberia direct
28 Sep - 01 Oct Iberia direct
29 Sep - 06 Oct Iberia direct
14 Sep - 28 Sep LEVEL direct
23 Sep - 26 Sep Iberia direct
28 Sep - 05 Oct Iberia direct
29 Sep - 02 Oct Iberia direct
06 Sep - 09 Sep Iberia direct
07 Sep - 14 Sep Iberia direct
08 Sep - 11 Sep Iberia direct
13 Sep - 16 Sep Iberia direct
14 Sep - 17 Sep Iberia direct
16 Sep - 23 Sep Iberia direct
24 Sep - 01 Oct Iberia direct
20 Sep - 23 Sep Iberia direct
26 Sep - 03 Oct Iberia direct

Also check the deals for one-way 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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