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

Return flights

27 Jul - 27 Aug	LEVEL	direct
28 Jul - 30 Jul	Condor
27 Jul - 30 Jul	Aer Lingus
27 Jul - 30 Jul	LEVEL	direct
28 Jul - 30 Jul	LEVEL	direct
19 Jul - 04 Aug	Condor
18 Jul - 29 Jul	Condor
18 Jul - 29 Jul	LEVEL	direct
19 Jul - 22 Jul	Iberia	direct
19 Jul - 04 Aug	LEVEL	direct
27 Jul - 03 Aug	Iberia	direct
30 Jul - 02 Aug	Iberia	direct
21 Jul - 24 Jul	Iberia	direct
22 Jul - 25 Jul	Iberia	direct
22 Jul - 29 Jul	Iberia	direct
29 Jul - 01 Aug	Iberia	direct
15 Jul - 03 Aug	Condor
26 Jul - 02 Aug	Iberia
31 Jul - 03 Aug	Iberia
25 Jul - 01 Aug	Iberia	direct

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

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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Cheapest return flights from Boston to Barcelona in July from $475

Return flights