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

Return flights

10 Jul - 18 Jul	TAP
23 Jul - 30 Jul	Aer Lingus
23 Jul - 30 Jul	LEVEL	direct
08 Jul - 01 Aug	TAP
04 Jul - 13 Jul	TAP
13 Jul - 08 Aug	TAP
08 Jul - 15 Jul	Aer Lingus
08 Jul - 15 Jul	LEVEL	direct
02 Jul - 13 Jul	Aer Lingus
02 Jul - 13 Jul	LEVEL	direct
04 Jul - 13 Jul	LEVEL	direct
10 Jul - 01 Aug	Aer Lingus
05 Jul - 10 Jul	Condor
08 Jul - 01 Aug	LEVEL	direct
10 Jul - 01 Aug	LEVEL	direct
13 Jul - 08 Aug	LEVEL	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 $572

Return flights