Cheapest one-way flights from Philadelphia to Dublin in September from $259

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Dublin (DUB) in September 2025 (see full year).

One-Way flights

30 Sep Spirit Airlines
05 Sep Frontier Airlines
28 Sep Spirit Airlines
26 Sep Frontier Airlines
25 Sep Spirit Airlines
20 Sep Spirit Airlines
12 Sep Spirit Airlines
10 Sep Frontier Airlines
06 Sep Frontier Airlines
11 Sep Frontier Airlines

Also check the deals for return flights from Philadelphia to Dublin in September.

Skyscanner

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Feel free to contact us with any feedback or request another flight research.