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

Return flights

12 May - 19 May	Air Canada
11 May - 18 May	Air Canada
13 May - 20 May	American Airlines
18 May - 25 May	Air Canada
13 May - 06 Jun	Air Canada
14 May - 21 May	Air Canada
17 May - 24 May	Air Canada
03 May - 14 Jun	Lufthansa
15 May - 22 May	Air Canada
24 May - 13 Jun	Air Canada
16 May - 23 May	Air Canada
23 May - 06 Jun	Lufthansa

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 518€

Return flights