AirHint found the following cheapest return flights from Boston (BOS) to Dublin (DUB) in August 2026 (see full year).

Return flights

12 Aug - 19 Aug	Iberia
11 Aug - 25 Aug	Iberia
16 Aug - 25 Aug	Air Canada
19 Aug - 27 Aug	Iberia
04 Aug - 12 Aug	Iberia
18 Aug - 01 Sep	Iberia
19 Aug - 02 Sep	Iberia
24 Aug - 03 Sep	Iberia
17 Aug - 31 Aug	Air Canada
10 Aug - 17 Aug	Air Canada
12 Aug - 31 Aug	Air Canada
12 Aug - 18 Aug	Air Canada
08 Aug - 22 Aug	Iberia
20 Aug - 03 Sep	Air Canada
18 Aug - 08 Sep	SWISS
23 Aug - 06 Sep	SWISS
25 Aug - 08 Sep	SWISS
26 Aug - 09 Sep	Lufthansa

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

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 Dublin in August from 291€

Return flights