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

Return flights

12 Jan - 07 Feb	British Airways
14 Jan - 07 Feb	Finnair	direct
12 Jan - 07 Feb	Finnair	direct
06 Jan - 13 Jan	Aer Lingus	direct
21 Jan - 28 Jan	Aer Lingus	direct
01 Jan - 08 Jan	Aer Lingus	direct
17 Jan - 23 Jan	Aer Lingus	direct
11 Jan - 18 Jan	Aer Lingus	direct
16 Jan - 23 Jan	Aer Lingus	direct
26 Jan - 02 Feb	Aer Lingus	direct
31 Jan - 07 Feb	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 410€

Return flights