$292 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 8/28. 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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Flights Deals

Best United States Flight Deals from Belfast Intl

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
New York1 stop$545
Los Angeles
Los Angeles3 stops$760
Las Vegas
Las Vegas2 stops$803
Miami
Miami1 stop$442
San Francisco
San Francisco1 stop$770
Boston
Boston2 stops$615
Washington, D.C.
Washington, D.C.3 stops$841
Denver
Denver3 stops$939
Seattle
Seattle3 stops$1,079
Atlanta
Atlanta2 stops$1,062
New York
New York1 stop$545
Los Angeles
Los Angeles3 stops$760
Las Vegas
Las Vegas2 stops$803
Miami
Miami1 stop$442
San Francisco
San Francisco1 stop$770
Boston
Boston2 stops$615
Washington, D.C.
Washington, D.C.3 stops$841
Denver
Denver3 stops$939
Seattle
Seattle3 stops$1,079
Atlanta
Atlanta2 stops$1,062

Cheap Flights from Belfast Intl to the United States

 
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

Mon, Sep 29 - Mon, Sep 29
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6:10 am - 2:20 pmBFS-MIA
13h 10m1 stop
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5:15 pm - 7:30 amMIA-BFS
33h 15m1 stop
Tue, Sep 16 - Tue, Sep 23
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6:15 am - 3:55 pmBFS-JFK
14h 40m1 stop
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6:20 pm - 7:25 pmJFK-BFS
20h 05m1 stop
Fri, Sep 5 - Fri, Sep 12
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8:25 pm - 3:55 pmBFS-JFK
24h 30m1 stop
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6:20 pm - 1:50 pmJFK-BFS
14h 30m1 stop
Sun, Sep 21 - Sun, Sep 28
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10:10 pm - 3:55 pmBFS-JFK
22h 45m1 stop
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6:20 pm - 11:10 pmJFK-BFS
23h 50m1 stop
Mon, Sep 29 - Mon, Sep 29
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6:10 am - 2:20 pmBFS-MIA
13h 10m1 stop
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5:15 pm - 5:20 pmMIA-BFS
19h 05m2 stops
Fri, Sep 12 - Fri, Sep 19
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6:05 am - 3:55 pmBFS-JFK
14h 50m1 stop
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6:20 pm - 1:30 pmJFK-BFS
14h 10m1 stop
Mon, Sep 15 - Mon, Sep 22
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7:10 pm - 3:55 pmBFS-JFK
25h 45m1 stop
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6:20 pm - 11:00 pmJFK-BFS
23h 40m1 stop
Mon, Sep 8 - Mon, Sep 15
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6:45 am - 6:05 pmBFS-JFK
16h 20m1 stop
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8:05 pm - 11:00 pmJFK-BFS
21h 55m1 stop
Mon, Sep 15 - Mon, Sep 22
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7:10 pm - 10:10 pmBFS-JFK
32h 00m2 stops
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11:10 pm - 11:00 pmJFK-BFS
18h 50m2 stops
Tue, Sep 16 - Tue, Sep 23
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7:00 am - 10:10 pmBFS-JFK
20h 10m2 stops
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11:10 pm - 11:20 pmJFK-BFS
19h 10m2 stops
Useful Info

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 $551 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $949 and $734 respectively.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$292
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Belfast Intl Airport to Boston

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.

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.
6.6
British AirwaysOverall score based on 7008 reviews
6.8Boarding
6.3Food
7.6Crew
6.7Comfort
6.4Entertainment
Airline reviews

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

6.0 GoodPhilip, Jun 2025LHR - BWI
Read more British Airways reviews

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Fantastic! Great seats! Friendly staff! Amazing selection of shows and movies! Smooth ride! I don’t know what more I could have asked for honestly. They made flying a breeze this time around.

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

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