Cheapest return flights from Boston to Dublin in September from $382

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

Return flights

13 Sep - 27 Sep jetBlue
02 Sep - 26 Sep Air France direct
07 Sep - 12 Sep Air France direct
24 Sep - 08 Oct Air France direct
13 Sep - 27 Sep Aer Lingus direct
02 Sep - 05 Sep Aer Lingus direct
03 Sep - 06 Sep Aer Lingus direct
03 Sep - 10 Sep Aer Lingus direct
01 Sep - 04 Sep Aer Lingus direct
01 Sep - 08 Sep Aer Lingus direct
04 Sep - 07 Sep Aer Lingus direct
30 Sep - 07 Oct Aer Lingus direct
24 Sep - 01 Oct Aer Lingus direct
25 Sep - 02 Oct Aer Lingus direct
26 Sep - 03 Oct Aer Lingus direct
28 Sep - 01 Oct Aer Lingus direct
28 Sep - 05 Oct Aer Lingus direct
29 Sep - 02 Oct Aer Lingus direct
29 Sep - 06 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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