Cheapest return BOS–DUB flights, May

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

Return flights

23 May - 30 May SWISS
26 May - 03 Jun Austrian Airlines
22 May - 01 Jun SWISS
23 May - 30 May Air France direct
20 May - 28 May United
25 May - 01 Jun United
23 May - 28 May United
30 May - 08 Jun United
27 May - 02 Jun Air Canada
28 May - 01 Jun United
27 May - 01 Jun Air Canada
26 May - 16 Jun Air Canada
22 May - 06 Jun United
20 May - 25 May Air Canada
23 May - 28 May Delta direct
30 May - 08 Jun Delta direct
22 May - 25 May United
22 May - 27 May United
21 May - 29 May United
21 May - 25 May United

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

Powered by

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Feel free to contact us with any feedback or request another flight research.