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

Return flights

04 Mar - 09 Mar	British Airways
03 Mar - 08 Mar	Iberia	direct
24 Mar - 02 Apr	Iberia	direct
04 Mar - 09 Mar	Aer Lingus	direct
18 Mar - 25 Mar	Air Canada
19 Mar - 27 Mar	Air Canada
18 Mar - 25 Mar	Aer Lingus	direct
14 Mar - 18 Mar	Aer Lingus	direct
13 Mar - 18 Mar	Aer Lingus	direct
12 Mar - 20 Mar	Air Canada
21 Mar - 11 Apr	Air Canada
27 Mar - 30 Mar	Air Canada
25 Mar - 04 Apr	Lufthansa
26 Mar - 06 Apr	Iberia	direct
25 Mar - 04 Apr	Aer Lingus	direct
28 Mar - 04 Apr	United
26 Mar - 04 Apr	Air Canada
26 Mar - 05 Apr	Air Canada
21 Mar - 11 Apr	Aer Lingus	direct
26 Mar - 04 Apr	Iberia	direct

Also check the deals for one-way flights from Philadelphia 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 Philadelphia to Dublin in March from $422

Return flights