Cheapest return flights from Boston to Dublin in September from 471€

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

Return flights

08 Sep - 15 Sep Air Canada
08 Sep - 15 Sep jetBlue direct
02 Sep - 09 Sep Air Canada
23 Sep - 27 Sep Scandinavian Airlines
30 Sep - 07 Oct jetBlue
17 Sep - 21 Sep Delta direct
30 Sep - 07 Oct Delta direct
25 Sep - 04 Oct Delta direct
01 Sep - 08 Sep Air Canada
07 Sep - 11 Sep United
07 Sep - 10 Sep Aer Lingus direct
07 Sep - 14 Sep Aer Lingus direct
08 Sep - 11 Sep Aer Lingus direct
27 Sep - 03 Oct Aer Lingus direct
23 Sep - 03 Oct Aer Lingus direct
28 Sep - 01 Oct Aer Lingus direct
30 Sep - 03 Oct Aer Lingus direct

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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