Cheapest return flights from Philadelphia to Dublin in September from $455

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

Return flights

07 Sep - 16 Sep Finnair direct
02 Sep - 08 Sep Aer Lingus direct
02 Sep - 08 Sep Air Canada
09 Sep - 16 Sep Aer Lingus direct
27 Sep - 15 Oct Aer Lingus direct
04 Sep - 14 Sep Air Canada
04 Sep - 13 Sep Air Canada
19 Sep - 30 Sep American Airlines
04 Sep - 13 Sep Aer Lingus direct
11 Sep - 20 Sep Air Canada
03 Sep - 20 Sep Air Canada

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

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