Cheapest return BOS–BCN flights, September

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

Return flights

09 Sep - 16 Sep LEVEL direct
13 Sep - 20 Sep LEVEL direct
20 Sep - 27 Sep LEVEL direct
17 Sep - 20 Sep LEVEL direct
23 Sep - 30 Sep LEVEL direct
13 Sep - 23 Sep LEVEL direct
24 Sep - 01 Oct LEVEL direct
30 Sep - 07 Oct LEVEL direct
27 Sep - 04 Oct LEVEL direct
23 Sep - 01 Oct LEVEL direct
13 Sep - 16 Sep Iberia direct
20 Sep - 23 Sep Iberia direct
27 Sep - 30 Sep Iberia direct
10 Sep - 17 Sep LEVEL direct
29 Sep - 06 Oct Icelandair
24 Sep - 03 Oct Iberia
18 Sep - 18 Oct Iberia
28 Sep - 01 Oct Iberia
18 Sep - 18 Oct Air France direct
24 Sep - 03 Oct Air France direct

Also check the deals for one-way flights from Boston to Barcelona in September.

Powered by

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Feel free to contact us with any feedback or request another flight research.