Question 1

What is the cheapest month to fly to Philadelphia?

Accepted Answer

If you aren’t able to travel during the month of April, then book flights to Philadelphia from Ireland during September instead. Flights to Philadelphia in September, while not as cheap as those in April, still average around £387.

Question 2

What is the cheapest day to depart on your flight to Philadelphia?

Accepted Answer

Our data shows that Monday is the least expensive day to fly to Philadelphia. Tickets to fly out on this day can be as low as £440. On the other hand, Sunday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £537.

Question 3

What is the cheapest Ireland to Philadelphia flight route?

Accepted Answer

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

Question 4

How many flights depart from Ireland to Philadelphia on average per day?

Accepted Answer

The number of flights available between Ireland and Philadelphia is 8 per day as of November 2025. The most frequent departure time is 11:00, with 57% of daily flights leaving at midday.

Question 5

How far in advance should I book a flight to Philadelphia?

Accepted Answer

You are more likely to see cheaper flights to Philadelphia from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around £458 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Ireland for as low as £377 on momondo.

Question 6

How often are flights from Ireland to Philadelphia delayed?

Accepted Answer

Historically, on average around 9% of flights between Ireland and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

Question 7

Which airlines fly to Philadelphia?

Accepted Answer

Aer Lingus, British Airways and KLM are the top three most popular airlines that fly to Philadelphia from Ireland according to our data. Aer Lingus is the first choice among our users, with 65% of people opting to fly with this airline when travelling to Philadelphia. Keep in mind that there are 14 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Question 8

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Question 9

Which airline has the best punctuality record on Ireland to Philadelphia flights?

Accepted Answer

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

Question 10

What cabin class options are available on Ireland to Philadelphia flights?

Accepted Answer

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

Question 11

What is the cheapest time of day to depart on your flight to Philadelphia?

Accepted Answer

The cheapest time of day to fly to Philadelphia is at midday when flights can be purchased for as low as £466. In the afternoon is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £511 per ticket.

Question 12

What is the most punctual flight time for Ireland to Philadelphia flights?

Accepted Answer

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Question 13

Can stopping save me money on Ireland to Philadelphia flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Ireland to Philadelphia.

Question 14

How many flights depart from Ireland to Philadelphia on average per week?

Accepted Answer

As of November 2025, 60 flights take off from Ireland and land in Philadelphia each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

Question 15

What is the cheapest airline that flies from Ireland to Philadelphia?

Accepted Answer

Aer Lingus is the most popular carrier operating from Ireland to Philadelphia

Question 16

When did momondo last update prices for flights from Ireland to Philadelphia Airport?

Accepted Answer

Prices for flights from Ireland to Philadelphia Airport are updated daily.

Question 17

How many operators does momondo search for flights from Ireland to Philadelphia Airport?

Accepted Answer

As of November 2025, there are 6 operators available to choose from for flights from Ireland to Philadelphia Airport.

Question 18

How old do you have to be to fly from Ireland to Philadelphia Airport?

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Philadelphia Airport.

Question 19

What documentation or ID do you need to fly to Philadelphia Airport?

Accepted Answer

The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	£387
Fastest flight time	7h 35m
Direct flights	Every day
Airports in Philadelphia	1 airport

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £299	Free Cancellation	Rating 6.7 7,545 reviews	Search British Airways flights
Aer Lingus	PriceFrom £319	Free Cancellation	Rating 7.2 1,384 reviews	Search Aer Lingus flights
Finnair	PriceFrom £346	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Iberia	PriceFrom £348	Free Cancellation	Rating 7.0 3,035 reviews	Search Iberia flights
American Airlines	PriceFrom £380	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
United Airlines	PriceFrom £439	Free Cancellation	Rating 7.4 9,056 reviews	Search United Airlines flights

Cheap flights from Ireland to Philadelphia from £311

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Philadelphia departing on 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ireland to Philadelphia

Recent return flight deals from Ireland to Philadelphia

Recent one-way flight deals from Ireland to Philadelphia

Recent last minute flight deals from Ireland to Philadelphia

Recent direct flight deals from Ireland to Philadelphia

British Airways flights from Ireland to Philadelphia

Our best British Airways deals on Ireland to Philadelphia flight tickets

American Airlines flights from Ireland to Philadelphia

Our best American Airlines deals on Ireland to Philadelphia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ireland to Philadelphia that are best for you.

See travel insights to Philadelphia from

How to get the cheapest flight ticket from Ireland to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Philadelphia?

If you aren’t able to travel during the month of April, then book flights to Philadelphia from Ireland during September instead. Flights to Philadelphia in September, while not as cheap as those in April, still average around £387.

What is the cheapest day to depart on your flight to Philadelphia?

What is the cheapest time of day to depart on your flight to Philadelphia?

The cheapest time of day to fly to Philadelphia is at midday when flights can be purchased for as low as £466. In the afternoon is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £511 per ticket.

What is the cheapest Ireland to Philadelphia flight route?

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

How far in advance should I book a flight to Philadelphia?

What cabin class options are available on Ireland to Philadelphia flights?

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

Can stopping save me money on Ireland to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between Ireland to Philadelphia.

What is the cheapest airline that flies from Ireland to Philadelphia?

Aer Lingus is the most popular carrier operating from Ireland to Philadelphia

Which airlines fly to Philadelphia?

How often are flights from Ireland to Philadelphia delayed?

Historically, on average around 9% of flights between Ireland and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

What is the most punctual flight time for Ireland to Philadelphia flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ireland to Philadelphia flights?

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

How many flights depart from Ireland to Philadelphia on average per day?

The number of flights available between Ireland and Philadelphia is 8 per day as of November 2025. The most frequent departure time is 11:00, with 57% of daily flights leaving at midday.

How many flights depart from Ireland to Philadelphia on average per week?

As of November 2025, 60 flights take off from Ireland and land in Philadelphia each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

Cheap Ireland to Philadelphia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Philadelphia

Best price found

Fastest flight time

Direct flights

Airports in Philadelphia

When did momondo last update prices for flights from Ireland to Philadelphia Airport?

How many operators does momondo search for flights from Ireland to Philadelphia Airport?

How old do you have to be to fly from Ireland to Philadelphia Airport?

What documentation or ID do you need to fly to Philadelphia Airport?

What is the most popular plane model from Ireland to Philadelphia?

Best airlines flying from Ireland to Philadelphia

Compare and see reviews for airlines that fly from Ireland to Philadelphia with momondo

Travelling to a place near Philadelphia?

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Philadelphia?

Can I find flights from Ireland to Philadelphia with flexible booking policies on momondo?

How can momondo help me find flights from Ireland to Philadelphia?

I’m not ready to book a flight from Ireland to Philadelphia right now. Can momondo alert me if prices change?

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Pennsylvania