Cheapest return flights from Boston to Barcelona in August from $382

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 August 2025 (see full year).

Return flights

31 Aug - 08 Sep Icelandair
24 Aug - 01 Sep Icelandair
31 Aug - 08 Sep LEVEL direct
29 Aug - 05 Sep LEVEL direct
30 Aug - 06 Sep LEVEL direct
31 Aug - 07 Sep LEVEL direct
18 Aug - 22 Aug LEVEL direct
08 Aug - 12 Aug LEVEL direct
11 Aug - 28 Aug LEVEL direct
02 Aug - 07 Aug LEVEL direct
06 Aug - 14 Aug LEVEL direct
13 Aug - 17 Aug LEVEL direct
23 Aug - 27 Aug LEVEL direct
02 Aug - 06 Aug LEVEL direct
17 Aug - 24 Aug LEVEL direct
26 Aug - 30 Aug LEVEL direct
18 Aug - 01 Sep LEVEL direct
24 Aug - 01 Sep LEVEL direct
26 Aug - 02 Sep LEVEL direct
27 Aug - 03 Sep LEVEL direct

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

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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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