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 £423 when searching weeks before you fly. 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 £377 on momondo.

Question 2

Which airlines fly to United States?

Accepted Answer

Aer Lingus, United Airlines and British Airways 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 58% of people opting to fly with this airline when travelling to United States. Keep in mind that there are 18 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Question 3

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

Accepted Answer

Wednesday 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 4

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

Accepted Answer

As of December 2025, 29 flights take off from Ireland and land in United States each day. The most common flight departure time for this route is 11:00, with 63% of daily flights taking off in the afternoon.

Question 5

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

Accepted Answer

Our most recent data shows that the best time of day to fly to United States is in the afternoon. Flights from Ireland to United States during this time can be as low as £418. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £570 on average. Flights to United States from Ireland in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 6

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

Accepted Answer

There are 3 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 7

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

Accepted Answer

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

Question 8

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 9

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

Accepted Answer

According to our data, Thursday is the cheapest day to fly to United States from Ireland. The lowest ticket price found for a Thursday departure recently was £438. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to United States for around £504.

Question 10

What is the cheapest month to fly to United States?

Accepted Answer

The month of February is, on average, the cheapest month to fly to United States from Ireland, with most prices found around £334. If you are unable to visit United States during the month of February, then departing from Ireland during the month September is also very affordable. Most momondo users find prices during this month for around £343.

Question 11

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

Accepted Answer

As of December 2025, there are 204 flights per week flying from Ireland to United States. The most common day of the week flights depart is Mon, with 23% of flights taking off on this day.

Question 12

What is the cheapest Ireland to United States flight route?

Accepted Answer

Fly from Dublin to San Francisco for the best Ireland - United States flight prices

Question 13

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

Accepted Answer

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

Question 14

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 departing in the evening have, in the past, seen delays more frequently in comparison.

Question 15

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

Accepted Answer

WestJet, LEVEL, and British Airways are the most popular carriers operating from Ireland to United States

Question 16

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

Accepted Answer

Prices for flights from Ireland to United States refresh daily.

Question 17

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

Accepted Answer

As of December 2025, there are 15 operators available to choose from for flights from Ireland to United States.

Question 18

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 19

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	£258
Fastest flight time	7h 10m
Direct flights	Every day
Airports in United States	4,296 airports

Airline	Rating	Free Cancellation	Price
PLAY	PriceFrom £217	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom £228	Free Cancellation	Rating 7.4 1,620 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom £262	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
British Airways	PriceFrom £265	Free Cancellation	Rating 6.7 7,605 reviews	Search British Airways flights
TAP AIR PORTUGAL	PriceFrom £275	Free Cancellation	Rating 7.2 2,095 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom £281	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
Aer Lingus	PriceFrom £290	Free Cancellation	Rating 7.2 1,410 reviews	Search Aer Lingus flights
Air France	PriceFrom £296	Free Cancellation	Rating 7.4 1,513 reviews	Search Air France flights
Lufthansa	PriceFrom £305	Free Cancellation	Rating 6.8 7,649 reviews	Search Lufthansa flights
Iberia	PriceFrom £305	Free Cancellation	Rating 7.0 3,056 reviews	Search Iberia flights

Cheap flights from Ireland to the United States from £246

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 17/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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?

What is the cheapest Ireland to United States flight route?

Fly from Dublin to San Francisco 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 3 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?

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

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

WestJet, LEVEL, and British Airways are the most popular carriers operating from Ireland to United States

Which 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 departing 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 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 the United States flights?

According to our data, JetBlue have had the fewest 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, 29 flights take off from Ireland and land in United States each day. The most common flight departure time for this route is 11:00, with 63% of daily flights taking off in the afternoon.

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

As of December 2025, there are 204 flights per week flying from Ireland to United States. The most common day of the week flights depart is Mon, with 23% of flights taking off on this day.

Cheap Ireland to United States flight deals and tips

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

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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?

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Best airlines flying from Ireland to United States

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