AirHint found the following cheapest return flights from Boston (BOS) to Barcelona (BCN) in August 2026 (see full year).
Return flights
| 04 Aug - 29 Aug | Iberia | direct | |
| 26 Aug - 19 Sep | Condor | ||
| 07 Aug - 31 Aug | Iberia | ||
| 07 Aug - 31 Aug | Iberia | direct | |
| 26 Aug - 19 Sep | Iberia | direct |
Also check the deals for one-way flights from Boston to Barcelona in August.
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