Cheap flights from Philadelphia to Ireland from €143

The month of October is another great option to travel to Ireland, with average flight prices from Philadelphia averaging around €238.

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as €494. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around €667. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

In the afternoon is the cheapest time of day to fly from Philadelphia to Ireland when you can find flight prices for as low as €651. Flying to Ireland in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around €844.

Fly from Philadelphia to Dublin for the best Philadelphia - Ireland flight prices

You are more likely to see cheaper flights to Ireland from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €608 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Philadelphia for as low as €557 on momondo.

There are 2 cabin classes available to choose from on Philadelphia to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, Aer Lingus, and United Airlines are the most popular carriers operating from Philadelphia to Ireland

Aer Lingus, United Airlines and JetBlue are the top three most popular airlines that fly to Ireland from Philadelphia according to our data. Aer Lingus is the first choice among our users, with 66% of people opting to fly with this airline when travelling to Ireland. Keep in mind that there are 3 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

As of June 2026, there are 9 flights per day flying from Philadelphia to Ireland. The most common time of day flights depart is 20:00, with 100% of flights taking off in the evening.

As of June 2026, there are 65 flights per week flying from Philadelphia to Ireland. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.