Question 1

How far in advance should I book a flight to United States?

Accepted Answer

You are more likely to see cheaper flights to United States from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $568 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Ireland for as low as $506 on momondo.

Question 2

What is the cheapest airline that flies from Ireland to United States?

Accepted Answer

WestJet, Scandinavian Airlines, and Aer Lingus are the most popular carriers operating from Ireland to United States

Question 3

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

Accepted Answer

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $544. Try not to purchase tickets in the morning because they tend to be around $666. Of course, these prices can vary depending on the time of year and what airport you fly to.

Question 4

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

Accepted Answer

547 flights are operational weekly from Ireland to United States as of December 2025. The most popular departure day for this route is Wed, with 15% of flights per week taking off on this day.

Question 5

Can stopping save me money on Ireland to United States flights?

Accepted Answer

You could potentially save up to 30% on your flight if you consider stops on a Ireland to United States flight.

Question 6

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

Accepted Answer

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

Question 7

How often are flights from Ireland to the United States delayed?

Accepted Answer

Historically, on average around 12% of flights between Ireland and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

Question 8

How long is the flight from Ireland to United States?

Accepted Answer

Flight times vary depending on what airport in Ireland you fly out of and what airport in United States you fly into. For example, flying from Dublin to Los Angeles takes 11h on average. On the other hand, flying from Milltown (Kerry) to Los Angeles takes 16h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Question 9

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

Accepted Answer

According to our data, JetBlue have had the least number of delays on this route over the last 12 months; with about 9% of their flights experiencing any sort of delay.

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

As of December 2025, 78 flights take off from Ireland and land in United States each day. The most common flight departure time for this route is 2:00PM, with 75% of daily flights taking off in the afternoon.

Question 12

What is the cheapest month to fly to United States?

Accepted Answer

In general, February is the cheapest month to fly from Ireland to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $447. If you aren’t able to travel during the month of February, then book flights to United States from Ireland during September instead. Flights to United States in September, while not as cheap as those in February, still average around $460.

Question 13

What airlines fly to United States?

Accepted Answer

Aer Lingus, American Airlines and Delta are the top three most popular airlines that fly to United States from Ireland according to our data. Aer Lingus is the first choice among our users, with 63% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 15 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Question 14

What is the cheapest Ireland to United States flight route?

Accepted Answer

Fly from Shannon to Boston Logan Intl for the best Ireland - United States flight prices

Question 15

What cabin class options are available on Ireland to United States flights?

Accepted Answer

There are 4 cabin classes available to choose from on Ireland to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 16

What is the cheapest day to depart on your flight to United States?

Accepted Answer

According to our data, Wednesday is the cheapest day to fly to United States from Ireland. The lowest ticket price found for a Wednesday departure recently was $590. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $702. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

Question 17

When did momondo last update prices for flights from Ireland to United States?

Accepted Answer

Prices for flights from Ireland to United States are refreshed on a daily basis.

Question 18

How many operators does momondo search for flights from Ireland to United States?

Accepted Answer

There are 12 operators available for flights from Ireland to United States as of December 2025.

Question 19

How old do you have to be to fly from Ireland to United States?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to United States.

Question 20

What documentation or ID do you need to fly to United States?

Accepted Answer

The travel and health documents required for your trip to United States can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United States. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best Price Found	$442
Fastest flight time	6h 45m
Direct flights	Every day
Airports in United States	4,296 airports

Airline	Rating	Free Cancellation	Price
PLAY	PriceFrom $284	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Icelandair	PriceFrom $361	Free Cancellation	Rating 7.0 591 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $374	Free Cancellation	Rating 7.2 2,092 reviews	Search TAP AIR PORTUGAL flights
Aer Lingus	PriceFrom $385	Free Cancellation	Rating 7.2 1,399 reviews	Search Aer Lingus flights
United Airlines	PriceFrom $397	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
KLM	PriceFrom $427	Free Cancellation	Rating 7.7 1,428 reviews	Search KLM flights
Air France	PriceFrom $428	Free Cancellation	Rating 7.4 1,508 reviews	Search Air France flights
Delta	PriceFrom $440	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
British Airways	PriceFrom $453	Free Cancellation	Rating 6.7 7,586 reviews	Search British Airways flights
Scandinavian Airlines	PriceFrom $475	Free Cancellation	Rating 7.4 1,609 reviews	Search Scandinavian Airlines flights

Cheap flights from Ireland to the United States from $302

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to the United States departing on 1/24. 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 and deals

Big names and 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 the United States

Recent round-trip flight deals from Ireland to the United States

Recent one-way flight deals from Ireland to the United States

Recent last minute flight deals from Ireland to the United States

Recent direct flight deals from Ireland to the United States

British Airways flights from Ireland to United States

Our best British Airways deals on Ireland to United States flight tickets

TAP AIR PORTUGAL flights from Ireland to United States

Our best TAP AIR PORTUGAL deals on Ireland to United States flight tickets

momondo Fare Finder

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

See travel insights to the United States from

How to get the cheapest flight ticket from Ireland to United States

What is the cheapest month to fly to United States?

What is the cheapest day to depart on your flight to United States?

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

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $544. Try not to purchase tickets in the morning because they tend to be around $666. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ireland to United States flight route?

Fly from Shannon to Boston Logan Intl for the best Ireland - United States flight prices

How far in advance should I book a flight to United States?

What cabin class options are available on Ireland to United States flights?

There are 4 cabin classes available to choose from on Ireland to United States 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 United States flights?

You could potentially save up to 30% on your flight if you consider stops on a Ireland to United States flight.

What is the cheapest airline that flies from Ireland to United States?

WestJet, Scandinavian Airlines, and Aer Lingus are the most popular carriers operating from Ireland to United States

What airlines fly to United States?

How often are flights from Ireland to the United States delayed?

Historically, on average around 12% of flights between Ireland and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

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

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

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

Wednesday is statistically the day of the week which experiences the fewest number of 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 the United States flights?

According to our data, JetBlue have had the least number of delays on this route over the last 12 months; with about 9% of their flights experiencing any sort of delay.

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

As of December 2025, 78 flights take off from Ireland and land in United States each day. The most common flight departure time for this route is 2:00PM, with 75% of daily flights taking off in the afternoon.

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

547 flights are operational weekly from Ireland to United States as of December 2025. The most popular departure day for this route is Wed, with 15% of flights per week taking off on this day.

How long is the flight from Ireland to United States?

Cheap Ireland to United States flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in United States

When did momondo last update prices for flights from Ireland to United States?

How many operators does momondo search for flights from Ireland to United States?

How old do you have to be to fly from Ireland to United States?

What documentation or ID do you need to fly to United States?

What is the most popular plane model from Ireland to United States?

Best airlines flying from Ireland to United States

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

Why use momondo?

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

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

How can momondo help me find flights from Ireland to United States?

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

An easier way to manage your United States trip

We make it super easy to schedule, organize 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

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo