$363 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 9/23. 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

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Cheap Flights from Belfast Intl to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
New York1 stop$531
Los Angeles
Los Angeles1 stop$744
Las Vegas
Las Vegas1 stop$929
Miami
Miami2 stops$715
San Francisco
San Francisco2 stops$877
Boston
Boston1 stop$653
Washington, D.C.
Washington, D.C.3 stops$629
Atlanta
Atlanta3 stops$714
New York
New York1 stop$531
Los Angeles
Los Angeles1 stop$744
Las Vegas
Las Vegas1 stop$929
Miami
Miami2 stops$715
San Francisco
San Francisco2 stops$877
Boston
Boston1 stop$653
Washington, D.C.
Washington, D.C.3 stops$629
Atlanta
Atlanta3 stops$714

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 round-trip 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 round-trip flight deals from Belfast Intl to the United States

Wed, Oct 8 - Wed, Oct 15
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6:10 am - 6:25 pmBFS-MCO
17h 15m1 stop
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8:30 pm - 7:50 amMCO-BFS
30h 20m1 stop
Mon, Jan 5 - Sun, Jan 11
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8:55 pm - 3:55 pmBFS-JFK
24h 00m1 stop
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6:05 pm - 10:05 amJFK-BFS
11h 00m1 stop
Mon, Sep 8 - Mon, Sep 22
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9:00 pm - 8:05 pmBFS-JFK
28h 05m3 stops
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6:20 pm - 6:45 pmJFK-BFS
19h 25m1 stop
Wed, Oct 8 - Wed, Oct 15
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9:05 pm - 3:55 pmBFS-JFK
23h 50m1 stop
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6:20 pm - 8:35 pmJFK-BFS
21h 15m1 stop
Tue, Oct 7 - Tue, Oct 14
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8:15 am - 3:55 pmBFS-JFK
12h 40m1 stop
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6:20 pm - 7:25 pmJFK-BFS
20h 05m1 stop
Tue, Feb 3 - Tue, Feb 10
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6:00 am - 3:55 pmBFS-JFK
14h 55m1 stop
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6:05 pm - 9:30 pmJFK-BFS
22h 25m1 stop
Tue, Oct 7 - Tue, Oct 14
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6:15 am - 3:55 pmBFS-JFK
14h 40m1 stop
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6:20 pm - 9:55 amJFK-BFS
10h 35m1 stop
Fri, Oct 10 - Sat, Oct 18
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6:05 am - 3:55 pmBFS-JFK
14h 50m1 stop
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6:20 pm - 7:45 amJFK-BFS
32h 25m1 stop
Wed, Oct 8 - Wed, Oct 15
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7:15 am - 5:15 pmBFS-JFK
15h 00m1 stop
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9:05 pm - 3:30 pmJFK-BFS
13h 25m2 stops
Wed, Nov 19 - Sat, Nov 22
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6:30 am - 6:25 pmBFS-EWR
16h 55m2 stops
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7:35 pm - 3:25 pmEWR-BFS
14h 50m2 stops
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 $545 (return) on average. On the other hand, the most expensive months are July and April, when the average cost of round-trip tickets is $734 and $730 respectively.

Good to know

Low seasonNovember
Cheapest flight$363
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 5% increase in price.
Flight from Belfast to Atlanta

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 travelers 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 round-trip 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.

  • 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 morning, when round-trip flights cost $557 on average. Morning departures are around 1% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the evening, which is peak travel time and where the average cost of a ticket is $566.

Reviews of the top airline 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.
6.7
British AirwaysOverall score based on 7305 reviews
6.7Comfort
7.6Crew
6.3Food
6.9Boarding
6.4Entertainment
Airline reviews

We missed the connection because we had to wait for a shuttle from the plane to the Terminal. Also, we needed assistance and none was available.

4.0 OkayAnonymous, Aug 2025LHR - BOS
Read more British Airways reviews

We missed the connection because we had to wait for a shuttle from the plane to the Terminal. Also, we needed assistance and none was available.

When we arrived at the airport - 1st step - printing out your boarding pass - no issue. Not long lines as these machines. 2nd step - processing your bag drop off. There was only one associate there to help 10 kiosks. We had a family in front of us for 20 minutes trying to work on the machine and figure out every step for 4 pieces of luggage. My husband alerted the associate who was able to assist the family. Highly suggest that there are more associates to assist in this process. Besides this issue, security check went very quickly. Our flight was direct to Philadelphia. We had to carry our bags down two flights of steps, then out to the tarmac to a bus, then carry our bags up two flights of stairs to the plane. No one on the flight was expecting that long trek. I could see some people were struggling a bit. All in all - great flight crew, plane was clean and food was great!

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

Checking in prior on line and wait time at Gatwick was terrible. I would rate a big fat ZERO.

I checked in to bags, one arrived one was delayed. I did not receive the bag for 4 days - arrived on Tuesday, received bag on Saturday!

It was ok. Our flight was delayed 2 hours, and then again on arrival. The explanation given felt feeble.

The booking agent, cheapflightsfares, messed up, and the information for the seats we paid extra for was not sent to American Airlines. We were separated on the return flight and sent to the lowest economy section. The flight attendant helped arrange seating at the back of the plane to allow my wife and me to sit together.

I liked the comfort of the seats, very attentive crew, and the meals were excellent.

We were kicked off this flight by British Airways due to delays on our connecting flight also operated by British airways and were rebooked on a different carrier which delayed our arrival home by > 26 hours.

Everything about the flight check-in was smooth no line the plane is clean and bathroom

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

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