Cheapest return flights from Boston to Dublin in September from $343

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

Return flights

09 Sep - 16 Sep jetBlue direct
01 Sep - 08 Sep Aer Lingus direct
08 Sep - 15 Sep Aer Lingus direct
04 Sep - 15 Sep Aer Lingus direct
04 Sep - 16 Sep Aer Lingus direct
04 Sep - 17 Sep Aer Lingus direct
04 Sep - 18 Sep Aer Lingus direct
04 Sep - 08 Sep Aer Lingus direct
04 Sep - 09 Sep Aer Lingus direct
04 Sep - 10 Sep Aer Lingus direct
09 Sep - 07 Oct jetBlue direct
30 Sep - 07 Oct Aer Lingus direct
25 Sep - 02 Oct Aer Lingus direct
24 Sep - 01 Oct Aer Lingus direct
27 Sep - 04 Oct Aer Lingus direct
28 Sep - 05 Oct Aer Lingus direct
26 Sep - 03 Oct Aer Lingus direct
29 Sep - 02 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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