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

Return flights

14 Jan - 07 Feb	Finnair	direct
13 Jan - 20 Jan	Aer Lingus	direct
28 Jan - 04 Feb	Aer Lingus	direct
08 Jan - 15 Jan	Aer Lingus	direct
18 Jan - 25 Jan	Aer Lingus	direct
23 Jan - 30 Jan	Aer Lingus	direct
17 Jan - 23 Jan	Aer Lingus	direct
03 Jan - 10 Jan	Aer Lingus	direct

Also check the deals for one-way flights from Philadelphia to Dublin in January.

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 January from 416€

Return flights