£234 Find Cheap Flights from Belfast Intl Airport to 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 Belfast Intl to the United States departing on 25/5. 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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Cheap Flights from Belfast Intl to the United States

Cheapest return prices found by our users on KAYAK in the last 72 hours
New York
Newark2 stops£414
Los Angeles
Los Angeles2 stops£559
Miami
Miami3 stops£599
San Francisco
San Francisco3 stops£671
Boston
Boston1 stop£497
Las Vegas
Las Vegas2 stops£847
Tampa
Tampa1 stop£603
Atlanta
Atlanta3 stops£671
Dallas
Dallas3 stops£817
Seattle
Seattle3 stops£734
Houston
Houston1 stop£1,111
Denver
Denver2 stops£831
Nashville
Nashville3 stops£790
Austin
Austin2 stops£922
New York
Newark2 stops£414
Los Angeles
Los Angeles2 stops£559
Miami
Miami3 stops£599
San Francisco
San Francisco3 stops£671
Boston
Boston1 stop£497
Las Vegas
Las Vegas2 stops£847
Tampa
Tampa1 stop£603
Atlanta
Atlanta3 stops£671
Dallas
Dallas3 stops£817
Seattle
Seattle3 stops£734
Houston
Houston1 stop£1,111
Denver
Denver2 stops£831
Nashville
Nashville3 stops£790
Austin
Austin2 stops£922

Book Cheap Belfast Intl to the United States Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Belfast Intl 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 from Belfast Intl to the United States

Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
15:40 - 13:15
BFS
-
EWR
26h 35m
2 stops
Multiple Airlines Logo
17:20 - 15:20
EWR
-
BFS
17h 00m
2 stops
£414Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
15:40 - 13:15
BFS
-
EWR
26h 35m
2 stops
Multiple Airlines Logo
17:20 - 15:20
EWR
-
BFS
17h 00m
2 stops
£418Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
07:35 - 13:15
BFS
-
EWR
34h 40m
2 stops
Multiple Airlines Logo
17:20 - 15:15
EWR
-
BFS
16h 55m
2 stops
£432Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
15:40 - 13:15
BFS
-
EWR
26h 35m
3 stops
Multiple Airlines Logo
17:20 - 15:20
EWR
-
BFS
17h 00m
2 stops
£434Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
07:35 - 13:15
BFS
-
EWR
34h 40m
3 stops
Multiple Airlines Logo
17:20 - 15:15
EWR
-
BFS
16h 55m
2 stops
£435Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
15:40 - 13:15
BFS
-
EWR
26h 35m
3 stops
Multiple Airlines Logo
17:20 - 15:20
EWR
-
BFS
17h 00m
2 stops
£440Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
07:30 - 19:20
BFS
-
JFK
16h 50m
2 stops
Multiple Airlines Logo
16:55 - 15:20
JFK
-
BFS
17h 25m
2 stops
£463Multiple Airlines
Wed, 22 Apr - Wed, 29 Apr
Multiple Airlines Logo
07:30 - 19:20
BFS
-
JFK
16h 50m
2 stops
Multiple Airlines Logo
16:55 - 15:20
JFK
-
BFS
17h 25m
2 stops
£463Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
17:10 - 18:25
BFS
-
MCO
30h 15m
2 stops
Multiple Airlines Logo
10:58 - 15:15
MCO
-
BFS
23h 17m
3 stops
£467Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
07:35 - 13:15
BFS
-
EWR
34h 40m
2 stops
Multiple Airlines Logo
17:20 - 15:15
EWR
-
BFS
16h 55m
2 stops
£481Multiple Airlines
Booking Insights

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

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

What is the cheapest month to fly from Belfast Intl Airport to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport 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 Belfast Intl Airport to the United States is May, when tickets cost £402 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of return tickets is £572 and £564 respectively.

Good to know - Cheap tickets from Belfast Intl Airport to United States

Low seasonNovember
Cheapest flight£234
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from Belfast Intl Airport to Orlando

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to 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 Belfast Intl Airport to United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Belfast Intl Airport to 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 Belfast Intl Airport to 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 Belfast Intl Airport to 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 Belfast Intl Airport to 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 Belfast Intl Airport to United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Belfast Intl to the United States

 
Need help choosing which airline to fly with from Belfast Intl 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 1470 reviews
8.4Crew
7.8Boarding
7.6Comfort
7.3Food
7.1Entertainment
Airline reviews

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

6.0 GoodGlenn, Feb 2026
AMS - JFK
Read more KLM reviews

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

Empty seats next to me - wish it had been for a longer flight!!

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.

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

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

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

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

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.

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.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

One of the best flight experiences I've have had in along time. Would fly with them again.

One of the best flight experience I have had in along time. Would fly with them again.

Like getting a bus. No great luxury but will get you there

Got us to destination alive, albeit a bit late. Luggage was left behind. No live tracking app available (available on some other airlines). Supposedly going to be delivered in next couple of days.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

The connection time between the regional flight (from Newcastle) to an international flight (to The States) was too short. To require as second security scan and customs clearance within an hour and 20 mins is not enough time to make the actual connection. We had a final boarding call the minute we walked out of US customs and had to sprint (with two small children) through 20 gates to make it in time before the door closed. The concept is great in theory to clear customs before leaving Europe, but the timing needs to be adjusted. We travel abroad frequently and won’t be using this route again. Thanks.

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

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

American continues to decline in their customer service and its beyond disappointing.

Mechanical issue delayed us 2hrs and then once we landed sat on tarmac for 30mins because someone left a vehicle in front of the gaye

An delay of almost 3 hours while passengers were already in the plane kept us very uncomfortable. The food was also very limited. A bad experience overall.

I guess if you don't run the AC it saves on fuel? Everyone complained the entire trip about how hot the cabin was. Also, extremely cramped. AA allows a little space per passenger as is legal. Not cheap, ticket prices were high.

The crew was excellent and overall the flight was good. No complaints.

I understand that there is a catering issue - water should be the minimum stock. During the flight, not once that the attendants came through with water. The conversations in the kitchen were very loud and they were swearing. I do not expect any white glove service, at the minimum, we should be cordial. It was almost an inconveniece that we were on the flight. And it made us feel if you even dare question us, we'll make you deplane.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

Never had such a lazy first class attendant. Literally spent 60%+ of the flight playing games on her personal phone making up excuses of why she was unavailable.

The flight attendants and the service is getting worse by the day.

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

We had American Airlines on our return and it was confusing if we were going with Aa or BA I had 2 different flight numbers and didn’t get our gate until it was boarding. So we were a bit nervous as the which it was

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Entertainment devices on A380 need to be fixed, the seats might do with updates.

Missed slot to leave so we were on the plane for an extra hour. The seats were really uncomfortable and the food was poor. The experience makes me think twice about flying as I suspect they are all similar.

Fine, charter flights. Plane full, and staff nice and friendly. No option for free food or drink. Entertainment through paid app.

The 737-8 is too small for the length of flight especially if there are any delays

The flight was delayed over 2 hours, we should off left the plane2 late passengers as it’s not fair on everyone who’s followed the rules.

Dreamliner. Yes great if maintained. I didn't see anyones screen work consistently during either of our flights. Worse was their ability to not only dump you out of premium but separate couples and seat someone's carer at the opposite end of the aircraft. This poor gentleman had no hand so his partner who assists him, being seated at the other end of the aircraft, well that really showed us all what Tui think :( It was fairly dire all in all, they advertise all the perks of the dreamliner only in reality you don't have the features and they change the windows and colours to suit their constant sales pitches. Ironically they were so low on stock for the return flight that all their sales pitches were a waste of time! Their contract only favours them and 'operational changes' well they cover every excuse and Tui use it. Surprisingly we haven't reinstalled the Tui app or booked with them since. It's a shame as I rated them highly during the pandemic.

One flight attendant not wearing a mask over nose, 50% of passengers not either, and no effort to correct. Boarding was very late with no information - lots of standing around waiting.

Everything you need to know for your flight from Belfast Intl to the United States

Information on your arrival and departure airports