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

Return flights

04 May - 12 May	Air Canada
05 May - 13 May	Air Canada
06 May - 14 May	Air Canada
03 May - 11 May	British Airways
25 May - 02 Jun	Air Canada
02 May - 10 May	Air Canada
26 May - 03 Jun	Air Canada
01 May - 09 May	Air Canada
07 May - 15 May	Air Canada
31 May - 08 Jun	Air Canada
26 May - 02 Jun	Air Canada
27 May - 03 Jun	American Airlines
24 May - 01 Jun	Air Canada
27 May - 04 Jun	American Airlines
25 May - 01 Jun	Air Canada
08 May - 16 May	Air Canada
23 May - 31 May	Air Canada
28 May - 05 Jun	Air Canada
28 May - 04 Jun	Air Canada

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

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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Cheapest return flights from Houston to Dublin in May from 406€

Return flights