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

Return flights

24 Aug - 07 Sep	Aer Lingus
27 Aug - 31 Aug	jetBlue
11 Aug - 08 Sep	Finnair	direct
27 Aug - 31 Aug	Finnair	direct
20 Aug - 24 Aug	Delta
05 Aug - 10 Aug	United
01 Aug - 09 Aug	Air Canada
11 Aug - 21 Aug	United
01 Aug - 15 Aug	Air Canada
20 Aug - 24 Aug	Finnair	direct
11 Aug - 21 Aug	Finnair	direct
01 Aug - 09 Aug	Finnair	direct
24 Aug - 07 Sep	Aer Lingus	direct

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

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 Dublin to Philadelphia in August from 492€

Return flights