Cheapest return flights from Boston to Dublin in September from $358

Best time to book flights for Boston (BOS) to Dublin (DUB) flights at AirHint

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

Return flights

08 Sep - 12 Sep Fly Play
08 Sep - 16 Sep Fly Play
01 Sep - 10 Sep Fly Play
12 Sep - 26 Sep Fly Play
10 Sep - 17 Sep Fly Play
01 Sep - 09 Sep Fly Play
15 Sep - 22 Sep Fly Play
19 Sep - 22 Sep Fly Play
10 Sep - 19 Sep Fly Play
18 Sep - 22 Sep Fly Play
23 Sep - 06 Oct Scandinavian Airlines
23 Sep - 06 Oct Air France direct
29 Sep - 06 Oct Aer Lingus direct
29 Sep - 02 Oct Aer Lingus
28 Sep - 01 Oct Aer Lingus
30 Sep - 03 Oct Aer Lingus

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

Skyscanner

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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