AirHint found the following cheapest return flights from Philadelphia (PHL) to Dublin (DUB) in October 2025 (see full year).

Return flights

29 Oct - 05 Nov	Aer Lingus	direct
10 Oct - 17 Oct	jetBlue
14 Oct - 21 Oct	Aer Lingus	direct
10 Oct - 17 Oct	Aer Lingus	direct
24 Oct - 31 Oct	Aer Lingus	direct
11 Oct - 21 Oct	American Airlines
19 Oct - 26 Oct	United
19 Oct - 26 Oct	Aer Lingus	direct
15 Oct - 19 Oct	United
15 Oct - 19 Oct	Finnair	direct
06 Oct - 13 Oct	United

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

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 October from $458

Return flights