Cheapest return flights from Boston to Barcelona in October from $477

Best time to book flights for Boston (BOS) to Barcelona (BCN) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Barcelona (BCN) in October 2025 (see full year).

Return flights

06 Oct - 13 Oct TAP
09 Oct - 13 Oct LEVEL direct
06 Oct - 13 Oct LEVEL direct
03 Oct - 13 Oct LEVEL direct
09 Oct - 10 Oct LEVEL direct
06 Oct - 10 Oct LEVEL direct
03 Oct - 10 Oct LEVEL direct
09 Oct - 16 Oct TAP
08 Oct - 12 Oct TAP
07 Oct - 13 Oct LEVEL direct

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

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona