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

Return flights

31 Mar - 07 Apr	Spirit Airlines
24 Mar - 31 Mar	Air Canada
23 Mar - 30 Mar	KLM
25 Mar - 01 Apr	Air France
30 Mar - 06 Apr	British Airways
10 Mar - 31 Mar	Air France
31 Mar - 22 Apr	Air Canada
01 Mar - 08 Mar	Air Canada
26 Mar - 02 Apr	Air Canada
29 Mar - 05 Apr	Air Canada
27 Mar - 03 Apr	Air Canada
22 Mar - 29 Mar	KLM
28 Mar - 04 Apr	Air Canada
01 Mar - 06 Mar	Lufthansa
05 Mar - 09 Mar	United
21 Mar - 28 Mar	British Airways
12 Mar - 26 Mar	KLM
12 Mar - 16 Mar	Lufthansa

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

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 March from 429€

Return flights