Cheapest return flights from Boston to Dublin in May from $338

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

Return flights

05 May - 12 May Air Canada
05 May - 12 May Scandinavian Airlines direct
04 May - 11 May Air Canada
02 May - 10 May Icelandair
04 May - 08 May Icelandair
12 May - 19 May Icelandair
08 May - 22 May Icelandair
05 May - 19 May Icelandair
13 May - 20 May Icelandair
12 May - 20 May Icelandair
27 May - 03 Jun Aer Lingus direct
26 May - 09 Jun Aer Lingus direct
26 May - 02 Jun Aer Lingus direct
27 May - 01 Jun Aer Lingus direct
28 May - 04 Jun Aer Lingus direct
29 May - 05 Jun Aer Lingus direct
30 May - 02 Jun Aer Lingus direct
31 May - 03 Jun Aer Lingus direct
29 May - 01 Jun Aer Lingus direct
29 May - 08 Jun Aer Lingus direct

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

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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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