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Cheap flights from the United States to Belfast from £140

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
20 déc. — 27 déc.1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from USA to Belfast

Keep the following information in mind while searching for USA to Belfast flight deals. Data was last updated 20 novembre 2025.

Round-trip from

£349

One-way from

£140

Popular in

April

Cheapest in

November

Average price

£351
25/1-4/2
  • 25/1-4/2
  • 2 total stops
  • 35h 30m total
  • USA to Belfast
Search Deals
25/1
  • 25/1
  • 1 total stop
  • 21h 05m total
  • USA to Belfast
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£116 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from USA to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from USA to Belfast
Explore the most affordable flight options available from USA to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 novembre 2025.

lun. 8/1219:15BOS - BHD
1 stop10h 25mAmerican Airlines
mar. 23/1206:35BHD - BOS
1 stop18h 10mAmerican Airlines
Deal found 19/11£409
lun. 8/1219:15BOS - BHD
1 stop14h 00mAmerican Airlines
mer. 20/506:50BHD - BOS
1 stop11h 45mAmerican Airlines
Deal found 18/11£422
mar. 25/1119:10BOS - BHD
1 stop20h 50mKLM
mar. 2/1217:20BHD - BOS
1 stop30h 35mKLM
Deal found 18/11£425
mar. 9/1220:00BOS - BFS
1 stop16h 00mMultiple Airlines
dim. 14/1211:00BFS - BOS
1 stop16h 15mMultiple Airlines
Deal found 19/11£443
mar. 9/1220:00BOS - BHD
1 stop15h 15mMultiple Airlines
dim. 14/1207:25BHD - BOS
1 stop19h 50mMultiple Airlines
Deal found 19/11£453
lun. 8/1215:35BOS - BHD
2 stops14h 05mBritish Airways
mer. 20/510:00BHD - BOS
1 stop15h 05mBritish Airways
Deal found 18/11£455
jeu. 27/1121:35BOS - BHD
1 stop11h 25mAmerican Airlines
mer. 3/1206:35BHD - BOS
1 stop14h 25mAmerican Airlines
Deal found 19/11£458
lun. 8/1215:35BOS - BHD
2 stops14h 05mBritish Airways
mar. 23/1211:25BHD - BOS
1 stop15h 30mBritish Airways
Deal found 19/11£461
mar. 25/1106:00BOS - BHD
2 stops21h 25mBritish Airways
mar. 2/1219:25BHD - BOS
1 stop25h 35mBritish Airways
Deal found 18/11£465
jeu. 27/1110:15BOS - BFS
2 stops30h 50mMultiple Airlines
mer. 3/1217:30BFS - BOS
2 stops31h 30mMultiple Airlines
Deal found 19/11£471
mer. 19/1110:05JFK - BFS
2 stops23h 00mMultiple Airlines
mer. 26/1117:30BFS - JFK
2 stops24h 35mMultiple Airlines
Deal found 18/11£473
mar. 30/1218:50JFK - BHD
1 stop10h 40mBritish Airways
ven. 9/106:45BHD - JFK
1 stop20h 20mBritish Airways
Deal found 17/11£476

Cheapflights Fare Finder

 
Customise your flight search to find flights from USA to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 20 novembre 2025.
Use the filters below to find and compare flights from the United States to Belfast that are best for you.

Fly from

USA

Fly to

Belfast

Route

Depart

Return

Price

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

dim. 25/1

18:05-20:10

1 stop21h 05m

Belfast Intl

mer. 4/2

06:30-15:55

1 stop14h 25m

£349

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

dim. 11/1

18:05-13:50

1 stop14h 45m

Belfast Intl

mar. 27/1

08:35-15:55

1 stop12h 20m

£386

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

dim. 11/1

18:05-20:30

1 stop21h 25m

Belfast City

mar. 27/1

07:20-15:55

1 stop13h 35m

£399

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

mer. 11/3

20:10-10:15

1 stop10h 05m

Belfast City

mer. 18/3

09:15-18:15

1 stop13h 00m

£406

NewarkBelfast

EWR - BHD

EWRBHD

Newark

mer. 11/3

22:35-16:35

1 stop14h 00m

Belfast City

mer. 18/3

06:35-14:50

1 stop12h 15m

£406

NewarkBelfast

EWR - BHD

EWRBHD

Newark

dim. 11/1

21:35-13:55

1 stop11h 20m

Belfast City

mar. 27/1

11:25-19:35

1 stop13h 10m

£417

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

ven. 15/5

18:20-09:55

1 stop10h 35m

Belfast Intl

mar. 19/5

06:15-15:55

1 stop14h 40m

£426

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

dim. 29/3

18:30-11:30

1 stop12h 00m

Belfast City

mer. 8/4

06:50-12:29

1 stop10h 39m

£428

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

mar. 7/4

19:20-10:35

1 stop10h 15m

Belfast City

mer. 15/4

10:00-16:10

1 stop11h 10m

£430

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

mar. 7/4

19:20-13:00

1 stop12h 40m

Belfast City

jeu. 16/4

12:40-21:00

1 stop13h 20m

£430

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 60 results
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Best time to book a flight from USA to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from USA with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from USA to Belfast?

Currently, September is the cheapest month in which you can book a flight from USA to Belfast (average of £407). Flying from USA to Belfast in November is currently the most expensive (average of £501). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to BFS?

Find hourly flight availability from USA to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 novembre 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 34% on flights from USA to Belfast by exploring options for tickets at midday.

Related info for your journey

Find useful and relevant information for your journey from USA to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from USA to Belfast?

    There are many flights that can get you from USA to Belfast in 10h 05m. Fly via British Airways or American Airlines to get the fastest option. USA and Belfast are separated by a distance of 3167 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from USA to Belfast one-way?

    One-way options have recently been found by users for as low as £236 on Delta. Other airlines that offer cheap prices include British Airways from £255 and American Airlines from £260 one-way.

  • What are the most popular routes from USA to Belfast?

    When deciding which route to take from USA to Belfast consider New York John F Kennedy Intl - Belfast Intl, Newark - Belfast Intl or New York John F Kennedy Intl - Belfast City as they are the most popular.

  • Can I find deals for flights from USA to Belfast that include hotel bookings?

    Yes. In addition to deals on USA to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from USA to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Belfast.

  • Can I find deals for business class flights from USA to Belfast?

    Yes. Cheapflights offers flight deals from USA to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to Belfast?

    Currently, September is the cheapest month in which you can book a flight from USA to Belfast (average of £407). Flying from USA to Belfast in November is currently the most expensive (average of £501). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for USA to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from USA to Belfast?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from USA to Belfast. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from USA to Belfast?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from USA to Belfast for you. Better yet — we are completely free to use.

Can Cheapflights find flights from USA to Belfast with no change fees?

Certainly. Search results for flights to Belfast from USA shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from USA to Belfast become cheaper?

Of course! You can now track prices for flights from USA to Belfast and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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