Cheapest return BOS–DUB flights, September

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

Return flights

21 Sep - 28 Sep Icelandair
19 Sep - 26 Sep Icelandair
20 Sep - 27 Sep Icelandair
22 Sep - 29 Sep Icelandair
23 Sep - 30 Sep Icelandair
01 Sep - 08 Sep Icelandair
06 Sep - 13 Sep Icelandair
05 Sep - 12 Sep Icelandair
07 Sep - 14 Sep Icelandair
25 Sep - 29 Sep Icelandair
15 Sep - 15 Oct TAP
24 Sep - 01 Oct Aer Lingus direct
15 Sep - 15 Oct Delta direct
25 Sep - 02 Oct Aer Lingus direct
26 Sep - 03 Oct Aer Lingus direct
27 Sep - 04 Oct Aer Lingus direct
28 Sep - 05 Oct Aer Lingus direct
29 Sep - 06 Oct Aer Lingus direct
27 Sep - 03 Oct Air France direct
27 Sep - 03 Oct Air Canada

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

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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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