Cheap flights from Pennsylvania to Ireland from $163

In general, January is the cheapest month to fly from Pennsylvania to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $134. If you aren’t able to travel to Ireland during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $181.

The cheapest day to depart on your flight to Ireland is on a Monday when prices can be found for as low as $711. This is often the case because there is less demand to fly during this day of the week. Flights from Pennsylvania to Ireland on a Saturday will generally be more expensive and average around $847. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

According to our data, the cheapest time of day to fly to Ireland is in the afternoon. momondo users have found flights departing from Pennsylvania to Ireland in the afternoon for as low as $753. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around $766.

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

You are more likely to see cheaper flights to Ireland from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $693 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Pennsylvania for as low as $626 on momondo.

There are 3 cabin classes available to choose from on Pennsylvania to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Icelandair, Aer Lingus, and Delta are the most popular carriers operating from Pennsylvania to Ireland

Aer Lingus, American Airlines and Iberia are the top three most popular airlines that fly to Ireland from Pennsylvania according to our data. Aer Lingus is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 11 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 67 flights per day flying from Pennsylvania to Ireland. The most common time of day flights depart is 8:00PM, with 100% of flights taking off in the evening.

The number of flights available between Pennsylvania and Ireland is 474 per week as of June 2026. The most frequent departure day is Fri, with 15% of weekly flights leaving on this day.