£240 Find Cheap Flights from Belfast Intl Airport to United States – Compare and Save

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 15/9. 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.
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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
New York2 stops£474
Los Angeles
Los Angeles2 stops£599
Miami
Miami2 stops£637
San Francisco
San Francisco3 stops£676
Boston
Boston2 stops£513
Las Vegas
Las Vegas3 stops£712
Atlanta
Atlanta2 stops£678
Tampa
Tampa3 stops£720
Dallas
Dallas2 stops£899
Seattle
Seattle2 stops£599
Nashville
Nashville3 stops£645
Denver
Denver3 stops£742
Austin
Austin2 stops£800
New York
New York2 stops£474
Los Angeles
Los Angeles2 stops£599
Miami
Miami2 stops£637
San Francisco
San Francisco3 stops£676
Boston
Boston2 stops£513
Las Vegas
Las Vegas3 stops£712
Atlanta
Atlanta2 stops£678
Tampa
Tampa3 stops£720
Dallas
Dallas2 stops£899
Seattle
Seattle2 stops£599
Nashville
Nashville3 stops£645
Denver
Denver3 stops£742
Austin
Austin2 stops£800

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, 23 Sep - Wed, 7 Oct
Multiple Airlines Logo
06:10 - 18:25
BFS
-
MCO
17h 15m
1 stop
Multiple Airlines Logo
20:30 - 07:55
MCO
-
BFS
30h 25m
1 stop
£432Multiple Airlines
Sat, 5 Sep - Sat, 12 Sep
Multiple Airlines Logo
06:20 - 18:25
BFS
-
MCO
17h 05m
1 stop
Multiple Airlines Logo
20:30 - 10:05
MCO
-
BFS
32h 35m
1 stop
£461Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Multiple Airlines Logo
20:40 - 18:25
BFS
-
MCO
26h 45m
1 stop
Multiple Airlines Logo
20:30 - 23:20
MCO
-
BFS
21h 50m
1 stop
£465Multiple Airlines
Fri, 11 Sep - Tue, 15 Sep
Multiple Airlines Logo
06:05 - 22:05
BFS
-
JFK
21h 00m
2 stops
Multiple Airlines Logo
20:30 - 21:05
JFK
-
BFS
19h 35m
2 stops
£474Multiple Airlines
Sat, 5 Sep - Sat, 12 Sep
Multiple Airlines Logo
06:20 - 18:25
BFS
-
MCO
17h 05m
1 stop
Multiple Airlines Logo
20:30 - 10:05
MCO
-
BFS
32h 35m
1 stop
£479Multiple Airlines
Fri, 11 Sep - Tue, 15 Sep
Multiple Airlines Logo
06:05 - 22:05
BFS
-
JFK
21h 00m
2 stops
Multiple Airlines Logo
20:30 - 23:20
JFK
-
BFS
21h 50m
2 stops
£482Multiple Airlines
Wed, 9 Sep - Wed, 16 Sep
Multiple Airlines Logo
06:10 - 18:25
BFS
-
MCO
17h 15m
1 stop
Multiple Airlines Logo
20:30 - 07:55
MCO
-
BFS
30h 25m
1 stop
£485Multiple Airlines
Sat, 5 Sep - Sat, 12 Sep
Multiple Airlines Logo
06:20 - 18:25
BFS
-
MCO
17h 05m
1 stop
Multiple Airlines Logo
20:30 - 10:05
MCO
-
BFS
32h 35m
1 stop
£485Multiple Airlines
Sat, 5 Sep - Sat, 12 Sep
Multiple Airlines Logo
06:20 - 18:25
BFS
-
MCO
17h 05m
1 stop
Multiple Airlines Logo
20:30 - 10:05
MCO
-
BFS
32h 35m
1 stop
£486Multiple Airlines
Mon, 14 Sep - Mon, 28 Sep
Multiple Airlines Logo
19:35 - 22:25
BFS
-
JFK
31h 50m
3 stops
Multiple Airlines Logo
23:10 - 23:20
JFK
-
BFS
19h 10m
2 stops
£488Multiple 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 October, when tickets cost £507 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of return tickets is £1,028 and £758 respectively.

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

Low season

November

Cheapest flight

£240
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (16% 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 3 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.
7.3
Aer LingusOverall score based on 1682 reviews
7.4Boarding
6.7Food
7.0Entertainment
8.1Crew
7.2Comfort
Airline reviews

I was pleasantly surprised. I've never flown this airline and the seats were comfy, I couldn't select my seat but luckily got aisle and was able to comfortably sleep the whole trip except when they came around with an in flight free meal, drinks then snack at the end. I'd fly with Aer Lingus again. The only annoying thing is you had to pay for WiFi for different hours of usage but luckily I didn't need it

10.0 ExcellentAustin, Jul 2026
DUB - JFK
Read more Aer Lingus reviews

I was pleasantly surprised. I've never flown this airline and the seats were comfy, I couldn't select my seat but luckily got aisle and was able to comfortably sleep the whole trip except when they came around with an in flight free meal, drinks then snack at the end. I'd fly with Aer Lingus again. The only annoying thing is you had to pay for WiFi for different hours of usage but luckily I didn't need it

This was a great flight. I love the way they had general boarding board from the back first by seat row and in general the flight was very comfortable. The seats were actually comfy, and the food served was surprisingly good.

A seat was broken There was a delay of 45min A checked bag was missing in Boston

The service was some of the worst I have experienced on an international flight. The service was rude, the quality of the food was very low. The speed of service was insanely quick. You couldn’t finish your pretzels before the meal came before the coffee came before trash collection came. Then they never came back for 5 hours. They rushed everything so they could get it over with.

A special shout-out to one of the check-in staff at DUB yesterday noon. We had to use the "Closing Flights" counter and we met, hands down, the most efficient person - able to resolve several issues in the matter of minutes, while remaining polite and calming everyone down. Great job, Aer Lingus!

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

I was pleasantly surprised and enjoyed the services of the airline since flying is not my favorite thing. My goal was to be with my brother's family in Manchester after his death. All staff was helpful, the food appreciated since I selected an overnight flight. Every aspect of the experience was comforting. I plan to return to Manchester in order to attend my brother's funeral in October and hope that I am able to find a reasonable priced flight. Thank you

Very good except for the boarding process which was more hectic than it should have been

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

Plane features were VERY old and outdated. footrest cushion was completely lose, plane felt dirty and a bit grimy. i was in business class. the lead flight attendant, Mary made a few announcements that didn't seem to put the cabin at ease (it didn't necessarily bother me, but could have bothered others). she said "the seat cushions aren't FDA approved, so you have to put them on after we take flight." everyone had already applied the seat cushions, and saying something isn't approved for flight may cause alarm. she also said at one point over the announcement ... "we can't get up because we are too afraid of the jet stream impacts" -- again, not helpful to those who are nervous fliers.

Extremely comfortable airplane, everything looked brand new, how lovely! My seat in Premium Economy was ever so comfortable, I did not suffer the usual backache I suffer when doing the transatlantic flight. It felt like seating in a reclining armchair. I loved the foot rest, did not need to use the portable device I usually carry along with me to replace one. I loved the spaciousness in front of me, and that there were only two seats (Instead of 3 in coach) in the window row, wow what a difference in comfort. Coach seats are always just a little narrow for my hips. The support of the cushions was great, firm and offered good support . It was easy to come out of my aisle seat, although I'm 70. The staff was courteous, both meals were delicious, very carefully prepared, and creative (fruit + cheese for the second meal, instead of the usual bread sandwich)

The plane was up-to-date, and the free wi-fi was very much appreciated! All of the ports functioned well, and the entertainment choices made the flight much more enjoyable. One of the flight attendants was unfriendly, but the flight was enjoyable overall.

3 hour delay before takeoff & another 30 minutes on the plane before taxi to runway

Rudest flight attendants ever, waited over 20 for light to be answered and it never was then tried to flag down an attendant who said someone else would come, just needed water to take some medicine Food bad

My entertainment unit kept locking up and had to be restarted multiple times. Also those commercials for Budapest and Ralph Laureen. Come on those were stuff only those who can afford the outrageous fees of first and business class would be interested in.. And the fact you have no military discount is not good either,

I was a Wheelchair Assist’ passenger on a London Heathrow to PHL flight yesterday. The process of getting me and my carry-on bag from the ticket counter to the gate was not good at all. It was the worst in my 5 years of experience using this service offered by American. The Philadelphia ‘Wheelchair Assist’ service was, and always has been Excellent! Not so at Heathrow. I was handed off to three different wheelchair drivers; had to sit in a very dingy holding area for 30 minutes while waiting for our gate change announcement; got crammed into a overloaded service vehicle to take me from the holding area to the gate ; was dumped at the end of the line of already-boarding passengers with my heavy carryon and no one helped me up the ramp way at the gate to board the plane. Overall it was a miserable experience!

Crew was nice, aircraft dated, entertainment same. Internet is expensive and terribly slow. Food pretty bad

Horrible experience. Food was ridiculous, insufficient, and not appetizing at all. They served sugary granola bar for breakfast. Furthermore, my bags were delayed and delivered damaged and American made it impossible to file for damages. Furthermore, the flights were delayed causing unnecessary stress given the connecting flights. It was awful experience, would never want to fly American.

My table was broken so it made it difficult to eat the food during the service. I was also informed that my luggage did not make it with me to Phoenix. I live two hours away so this makes it even more stressful to try and arrange a time for pick up

Not good because in this cancelled and then rebooked flight BA put me and my husband in both middle seats when we were originally seated together in original flight and i was in aisle. I hate sitting in the middle. BA food needs to be better. It was just ok. Thanks though to screw and everyone one for safe flight

Crew members were thorough in checking seatbelts and whatnot which makes me feel cared for because passenger safety is a main concern.

I was sent an email that said my card payment was not verified. When I spoke to an agent , he said my card was not verified and the flight I thought I had to booked was no longer available so I booked another flight on another airline(United). Later I got flight updates , etc., concerning my supposed first flight. So if I was charged for this flight on British Airways/American airlines, I need a refund.

The crew made it a great flight. They were friendly and attentive. They made me want to fly British Airways again.

BA has not been handling priority luggage with any special priority. This time our luggage was distinctly very slow to arrive, well after the first half of items to arrive. Business class flights cost a lot and it would be nice to have that reflected in the speed of baggage handling! (I note that this has worsened in our long experience of BA.) On a different note, we spent 2.5 hours on the plane after landing because of an airport mishap at Boston Logan. The pilot provided reasonably frequent update but more could have been done to ensure passenger comfort, such as more beverage and maybe snack services.

Food is horrible. Flight was good and the staff were mostly men.

Flight was excellent, staff was great. My first time in first class and it was very relaxing and comfortable.

They are disorganized….show your flight info half an hour before take off, so you are running all over the place. Customer personnel are not helpful, and act like you are bothering them when you asked for assistance - very rude!!! My very first and last time flying with British airways… good thing we have other options.

There was no entertainment offered or expected, so please disregard my readings of that component. The flight was fantastic. Efficient boarding, takeoff, and even early arrival!

2 hour delay with very little information given. Horrible service by BA employees at Heathrow after we missed our connecting flight. Extremely disappointing experience!

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

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