AirHint found the following cheapest return flights from Dublin (DUB) to Boston (BOS) in August 2025 (see full year).

Return flights

27 Aug - 31 Aug	Fly Play
29 Aug - 02 Sep	TAP
29 Aug - 01 Sep	TAP
26 Aug - 07 Sep	TAP
28 Aug - 04 Sep	Icelandair
20 Aug - 25 Aug	Fly Play
25 Aug - 03 Sep	TAP
28 Aug - 01 Sep	Icelandair
29 Aug - 11 Sep	TAP
29 Aug - 05 Sep	TAP
13 Aug - 27 Aug	Fly Play
20 Aug - 22 Aug	Fly Play
29 Aug - 14 Sep	TAP
20 Aug - 31 Aug	Fly Play
20 Aug - 05 Sep	Fly Play
17 Aug - 25 Aug	Fly Play
17 Aug - 22 Aug	Fly Play
20 Aug - 27 Aug	Fly Play
25 Aug - 31 Aug	Scandinavian Airlines
26 Aug - 31 Aug	Scandinavian Airlines

Also check the deals for one-way flights from Dublin to Boston 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 Dublin to Boston in August from $353

Return flights