€191 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 5/3. 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

Best United States Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours
New York
Newark2 stops€282
Orlando
Orlando1 stop€416
Chicago
Chicago1 stop€405
Miami
Miami1 stop€429
Los Angeles
Los Angeles1 stop€457
Boston
Boston1 stop€300
San Francisco
San Francisco1 stop€436
Las Vegas
Las Vegas2 stops€412
Washington, D.C.
Washington, D.C.1 stop€357
Seattle
Seattle1 stop€360
Denver
Denver1 stop€337
Atlanta
Atlantadirect€864
Dallas
Dallas1 stop€526
Nashville
Nashville1 stop€320
Tampa
Tampa2 stops€460
Houston
Houston3 stops€447
Honolulu
Honolulu2 stops€812
Philadelphia
Philadelphia1 stop€390
San Diego
San Diego1 stop€547
New York
Newark2 stops€282
Orlando
Orlando1 stop€416
Chicago
Chicago1 stop€405
Miami
Miami1 stop€429
Los Angeles
Los Angeles1 stop€457
Boston
Boston1 stop€300
San Francisco
San Francisco1 stop€436
Las Vegas
Las Vegas2 stops€412
Washington, D.C.
Washington, D.C.1 stop€357
Seattle
Seattle1 stop€360
Denver
Denver1 stop€337
Atlanta
Atlantadirect€864
Dallas
Dallas1 stop€526
Nashville
Nashville1 stop€320
Tampa
Tampa2 stops€460
Houston
Houston3 stops€447
Honolulu
Honolulu2 stops€812
Philadelphia
Philadelphia1 stop€390
San Diego
San Diego1 stop€547

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, 29 Jan - Thu, 5 Feb
Scandinavian Airlines Logo
11:30 - 13:25
DUB
-
EWR
30h 55m2 stops
Scandinavian Airlines Logo
18:30 - 18:10
EWR
-
DUB
18h 40m2 stops
€282Scandinavian Airlines
Thu, 22 Jan - Sun, 25 Jan
Scandinavian Airlines Logo
11:30 - 13:25
DUB
-
EWR
30h 55m2 stops
Scandinavian Airlines Logo
17:40 - 10:45
EWR
-
DUB
12h 05m1 stop
€286Scandinavian Airlines
Wed, 25 Feb - Sun, 1 Mar
British Airways Logo
08:50 - 14:20
DUB
-
BOS
10h 30m1 stop
British Airways Logo
18:55 - 19:40
BOS
-
DUB
19h 45m1 stop
€300British Airways
Tue, 3 Feb - Tue, 10 Feb
British Airways Logo
08:50 - 14:20
DUB
-
BOS
10h 30m1 stop
British Airways Logo
21:35 - 12:10
BOS
-
DUB
9h 35m1 stop
€301British Airways
Tue, 3 Feb - Tue, 10 Feb
Aer Lingus Logo
16:45 - 18:59
DUB
-
BOS
7h 14mdirect
Aer Lingus Logo
21:15 - 08:20
BOS
-
DUB
6h 05mdirect
€348Aer Lingus
Mon, 26 Jan - Mon, 2 Feb
Aer Lingus Logo
16:45 - 18:59
DUB
-
BOS
7h 14mdirect
Aer Lingus Logo
21:15 - 08:20
BOS
-
DUB
6h 05mdirect
€349Aer Lingus
Sat, 17 Jan - Sun, 18 Jan
American Airlines Logo
11:30 - 17:06
DUB
-
BOS
10h 36m1 stop
American Airlines Logo
17:45 - 08:40
BOS
-
DUB
9h 55m1 stop
€361American Airlines
Fri, 13 Mar - Sun, 22 Mar
American Airlines Logo
11:30 - 18:06
DUB
-
BOS
10h 36m1 stop
American Airlines Logo
16:08 - 08:40
BOS
-
DUB
12h 32m1 stop
€381American Airlines
Sat, 18 Apr - Mon, 20 Apr
United Airlines Logo
09:50 - 09:26
DUB
-
LGA
28h 36m1 stop
United Airlines Logo
06:00 - 07:20
LGA
-
DUB
20h 20m1 stop
€428United Airlines
Sat, 14 Mar - Mon, 16 Mar
United Airlines Logo
08:00 - 09:18
DUB
-
LGA
29h 18m1 stop
United Airlines Logo
06:00 - 10:20
LGA
-
DUB
24h 20m1 stop
€429United Airlines
Booking Insights

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

Get data-powered insights and trends for 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 €344 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 €344.

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 November, when tickets cost €485 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is €774 and €750 respectively.

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 25% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 13 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 Chicago O'Hare Intl Airport (ORD), with an average flight price of €394.

Good to know

Low seasonJanuary
Cheapest flight€191
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (14% more expensive on average)
Flight from Dublin to Newark Liberty Airport

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 €584. On the other hand, the most expensive day to fly is Sunday, when return prices are €686 on average.

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

    The cheapest time of day to fly to the United States is generally in the evening, when retur flights cost €516 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the morning, which is peak travel time and where the average cost of a ticket is €569.

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 €517, from Dublin €642
  • 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.
7.7
KLMOverall score based on 1435 reviews
7.7Boarding
8.4Crew
7.2Food
7.6Comfort
7.1Entertainment
Airline reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

4.0 OkayShereen, Dec 2025
Read more KLM reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

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

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

The staff was nice, however boarding taking 2 hours. That’s insane. Overall very bad experience, a lot of turbulence and when landed in Chicago was horrible. I don’t think I’ll flight with UA again.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

I understand weather is an issue, but making us chase our plane down at five scheduled gates across three terminals in an airport the size of O'Hare was unfair. They'd have probably been better off to leave gates as TBD until the inbound plane is in final approach instead of running us all over the place. Also, props to the consistently-unprepared ground crew in Richmond for once again leaving my lane parked short of the gate because they couldn't have a crew in place on time with 2 hours notice...

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

An international flight on an apron is pretty unusual in my 40 years of traveling. Departure delay. Luggage despite over an hour connection did not make it to the flight. Actually still in Germany. My luggage was not moved until I reached my final destination despite knowing it to be left in Germany upon my arrival in Chicago. The service left me a little off, both going and returning from Europe. Light on in the cabin even during a night flight and lots of traffic no matter what. Maybe passengers want more service? As a frequent traveler i just want to be able to sleep, the food will be better at the destination anyway. So since the cabin crew woke me up I asked for a cocktail, I did not get the best response although sitting in row 20 premium economy. I usually fly premium economy or business and my 2 flight to Europe in 2025 with United both had luggage delays and other minor issues. American flights to Australia, Canada and Europe went smoothly and Premium plus feels very much like business light. Is United Club becoming a waste and Silver/Gold levels another waste??

The captain brought my 6 year old son into the cockpit and allowed him to ask questions, sit in the captain’s chair and talk about all the gears and levers. Made the trip very special for him.

I take this flight about 6-8 times per year. It is convenient and saves an hour or two by skipping PDX, SEA, PHX, or ORD (but it takes longer to get bags to the carousel than Alaska Airlines). I wish the food service were better (but they might cut back on it because it is a red-eye). The WifI seems to go down about an hour out of Anchorage, and then comes back about an hour later...so be warned if this is an issue for you.

Original flight was canceled and rescheduled for the next day. Cancelation notice was sent in the middle of the night (only saw it in the morning), leaving no room to find other options. No offers to reimburse for the extra expenses or compensations. My flight to Rio on 12/12 was also delayed for 16 hours. This seems to be the new normal for AA.

Better service. No food options, but we did get drinks and a cookie.

Boarding was organized and timely. Food was mediocre, especially for first class travel.

We were 4+ hours delayed. AA is absolutely obnoxious. They just kept pushing back the time to the point where we did not get into Vegas until after midnight when we were supposed to arrive like 845pm.

My last flight on 25 Dec, it’s Christmas Day, everyone happy and very good mood. I really enjoy traveling with Americans Airlines from Miami to Minneapolis my home town after long flight from lhe to Doha then Miami. Thank you again to make my travels comfortable and relaxed. Best regards

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

WiFi didn’t work the entire flight. Very disappointing. Minimal food and options - sadly the state of current affairs. All other aspects of the flight were fine.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

The seats needs to be comfortables, at least please add more padding to the seats.

Incredible service. Incredible entertainment. I felt like they just kept serving us something new avery hour. My wife and I both had a joyous flight.

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

Great seat in premium economy, great food and drinks throughout lots of in flight entertainment. 1 hour 40 min delayed flying out , 2 1/2 hour wait at passport control in tampa

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

Besides having a LONG layover in Philadelphia to begin with, our flight was delayed and left late. We spent 7 hours in the Philadelphia airport after being in the air 7 hours from Portugal to Philly. It turned into a 24 hour day of travel which was exhausting. I know you can't help weather but our layover was difficult as my husband is handicapped. The staff was EXTREMELY helpful with his wheelchair tho!!

I was in a bulkhead seat and my tray table wasn't level. Eating was difficult.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

main meals are horrible but then you dont fly for the food

It was good. Couldn’t Check in online and select seats

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.