€271 Find Cheap Flights to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ireland to the United States departing on 29/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals
Booking Insights
Flight Deals

Best United States Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
New York
Newark2 stops€325
Orlando
Orlando1 stop€490
Miami
Miami1 stop€460
Boston
Boston1 stop€437
Chicago
Chicago1 stop€498
Los Angeles
Los Angeles1 stop€516
San Francisco
San Francisco2 stops€533
Las Vegas
Las Vegas1 stop€516
Washington, D.C.
Washington, D.C.1 stop€444
Seattle
Seattle1 stop€490
Dallas
Dallas1 stop€680
Nashville
Nashville1 stop€409
Atlanta
Atlanta1 stop€466
Denver
Denver1 stop€454
Philadelphia
Philadelphia1 stop€433
Tampa
Tampa1 stop€482
Honolulu
Honolulu2 stops€905
Houston
Houston1 stop€546
Charlotte
Charlotte2 stops€673
New York
Newark2 stops€325
Orlando
Orlando1 stop€490
Miami
Miami1 stop€460
Boston
Boston1 stop€437
Chicago
Chicago1 stop€498
Los Angeles
Los Angeles1 stop€516
San Francisco
San Francisco2 stops€533
Las Vegas
Las Vegas1 stop€516
Washington, D.C.
Washington, D.C.1 stop€444
Seattle
Seattle1 stop€490
Dallas
Dallas1 stop€680
Nashville
Nashville1 stop€409
Atlanta
Atlanta1 stop€466
Denver
Denver1 stop€454
Philadelphia
Philadelphia1 stop€433
Tampa
Tampa1 stop€482
Honolulu
Honolulu2 stops€905
Houston
Houston1 stop€546
Charlotte
Charlotte2 stops€673

Book Cheap United States Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to the United States that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to the United States

Thu, 24 Sep - Mon, 28 Sep
Scandinavian Airlines Logo
11:10 - 13:15
DUB
-
EWR
31h 05m
2 stops
Scandinavian Airlines Logo
17:20 - 10:10
EWR
-
DUB
35h 50m
2 stops
€325Scandinavian Airlines
Thu, 8 Oct - Sun, 17 Jan
Scandinavian Airlines Logo
11:10 - 13:15
DUB
-
EWR
31h 05m
1 stop
Scandinavian Airlines Logo
18:30 - 11:50
EWR
-
DUB
12h 20m
1 stop
€330Scandinavian Airlines
Tue, 2 Jun - Sun, 7 Jun
Aer Lingus Logo
19:45 - 22:25
DUB
-
JFK
7h 40mdirect
Aer Lingus Logo
21:05 - 08:50
JFK
-
DUB
6h 45mdirect
€435Aer Lingus
Thu, 28 May - Mon, 15 Jun
KLM Logo
11:10 - 17:05
DUB
-
JFK
10h 55m
1 stop
KLM Logo
21:20 - 09:15
JFK
-
DUB
6h 55mdirect
€441KLM
Thu, 28 May - Sun, 31 May
Aer Lingus Logo
16:45 - 18:50
DUB
-
BOS
7h 05mdirect
Aer Lingus Logo
21:15 - 08:25
BOS
-
DUB
6h 10mdirect
€442Aer Lingus
Tue, 26 May - Fri, 5 Jun
KLM Logo
05:55 - 12:24
DUB
-
JFK
11h 29m
1 stop
KLM Logo
16:29 - 09:15
JFK
-
DUB
11h 46m
1 stop
€442KLM
Sat, 10 Oct - Sun, 18 Oct
American Airlines Logo
11:45 - 18:29
DUB
-
LGA
11h 44m
1 stop
American Airlines Logo
15:00 - 09:35
LGA
-
DUB
13h 35m
1 stop
€455American Airlines
Thu, 21 May - Mon, 25 May
American Airlines Logo
11:45 - 19:10
DUB
-
LAX
15h 25m
1 stop
American Airlines Logo
13:21 - 11:50
LAX
-
DUB
14h 29m
1 stop
€529American Airlines
Sat, 19 Sep - Mon, 28 Sep
United Airlines Logo
12:30 - 14:55
SNN
-
EWR
7h 25mdirect
United Airlines Logo
22:50 - 10:15
EWR
-
SNN
6h 25mdirect
€533United Airlines
Sun, 20 Sep - Sun, 27 Sep
United Airlines Logo
12:30 - 14:55
SNN
-
EWR
7h 25mdirect
United Airlines Logo
22:50 - 10:15
EWR
-
SNN
6h 25mdirect
€584United Airlines
Booking Insights

KAYAK's insights & trends for flights to the United States

Get data-powered insights and trends into flights to the United States to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to the United States?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to the United States from Ireland found in the last 72 hours was to Newark Airport, at €433 return. The most popular route is Dublin (DUB) to Newark Airport (EWR) and the cheapest return airline ticket found on this route in the last 72 hours was €433.

What is the cheapest month to fly from Ireland to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to the United States, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ireland to the United States is January, when tickets cost €460 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is €838 and €830 respectively.

What is the cheapest time of day to fly to the United States?

The average price for all round-trip flights from Ireland to the United States depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United States is generally at night, when retur flights cost €451 on average. Morning departures are around 30% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is €604.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to the United States, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Ireland to the United States, you should book around 2 weeks before departure, which saves you about 32% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Which is the cheapest airport to fly into in the United States?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United States is New York John F Kennedy Intl Airport (JFK), with an average flight price of €356.

Good to know

Low seasonJanuary
Cheapest flight€271
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from Dublin to Newark Liberty Airport

Flights to the United States: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew to the United States 
Verified travelerFlew with Aer Lingus
DUB
-
LAX
Apr 2026
If continuing from LAX on SkyWest, be prepared for a long walk followed by a bus transfer, and get your necessities before you leave the main terminal areas.
JimFlew with Aer Lingus
DUB
-
BOS
Mar 2026
The A330 is very loud in the back; better to book a forward seat.
JohannaFlew with Aer Lingus
DUB
-
ORD
Feb 2026
Are Ling’s was great, and boards from the back of the plane, which made boarding way less chaotic and much quicker.

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Ireland to the United States?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ireland to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ireland to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to the United States is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ireland to the United States?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ireland to the United States?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ireland to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to the United States?

    Based on KAYAK data, the cheapest day to fly to the United States is Thursday when return tickets can be as cheap as €606. On the other hand, the most expensive day to fly is Sunday, when return prices are €723 on average.

Top tips for finding cheap flights to the United States

  • Looking for cheap airfare to the United States? 25% of our users found return tickets to the United States for the following prices or less: From Shannon €646, from Dublin €763
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest United States flight deals.

Reviews of the top 5 airlines flying to the United States

 
Need help choosing which airline to fly with from Ireland to the United States? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1514 reviews
7.2Entertainment
7.3Food
7.7Comfort
8.4Crew
7.8Boarding
Airline reviews

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

10.0 ExcellentBob, May 2026
AMS - YYZ
Read more KLM reviews

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

Brand new plane lots of room the snack was very flavourful and enjoyable

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Seats were not super comfortable and food was not good at all. If I had a chance I would definitely fly a different airline. Of course they are better than any budget airline, but not by much.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

OK overall. Flight was delayed Crew on flight was good

On time, only a little turbulence, very competent and caring attendants. Clear information.

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Economy seats a bit small but other than that it was all good.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

The small flights with Valet Luggage has a poor service

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

Everything was fine except the end of the flight. We spent more than an hour circling around Miami due to weather conditions. That was not good.

They lost my bag. ... And I asked them 3 times to 3 different people if my checked bag will maKe it all the way - they all confirmed and at the end it was left at the connection... Bravo

Cancelled BOYH legs of our flight home 30 min before initial boarding

Departure was delayed leading to late arrival, 25 min wait for a gate. Basically, missed all our connections & had to be rebooted, which was a very long process.

Good flight, no turbulence. I felt safe and comfortable which is really important when I am just a passenger.

Somone switched seats to sit near friend causing us to be disconnected (3) business class. Very disappointed. Staff did nothing.

A shout-out to the flight attendent, Lauren, who was the main person assisting me. She was amazing - perfect balance of bright, cheerful, engaging, yet formal

1st class seats NOT REALLY 1st class or business class but like premier economy. Should be listed as such or named something else. I have flown 1st class with other airlines and they are nothing like it at all.

The flight from Dallas to madrid was delayed for 2 to 3 hours, the flight back from Dallas to Sacramento was fine , but there were 5 gate changes within the span of 2 hours, last one was in a differny terminal. Flight and crew was okay

I was downgraded from business class to economy class with no compensation. American Airlines is absolutely the worst airline for international travel. They treat their business class customers like dogs.

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

Everything you need to know for your flight to the United States

Cabin class types available on flights to the United States

Cabin classes available on flights to the United States. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.