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

Return flights

17 Aug - 24 Aug	Air Canada
21 Aug - 28 Aug	Air Canada
18 Aug - 25 Aug	Air Canada
19 Aug - 26 Aug	Air Canada
26 Aug - 02 Sep	Air Canada
05 Aug - 12 Aug	Air Canada
22 Aug - 29 Aug	Air Canada
24 Aug - 31 Aug	Air Canada
31 Aug - 07 Sep	Air Canada
04 Aug - 11 Aug	Air Canada
24 Aug - 06 Sep	Air Canada
16 Aug - 22 Aug	Air Canada
27 Aug - 03 Sep	Air Canada
15 Aug - 22 Aug	Air Canada
25 Aug - 01 Sep	Lufthansa
25 Aug - 01 Sep	KLM	direct
26 Aug - 02 Sep	American Airlines	direct
27 Aug - 03 Sep	Aer Lingus	direct
30 Aug - 06 Sep	Air Canada
24 Aug - 06 Sep	Aer Lingus	direct

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 310€

Return flights