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Cheap flights from the United States to Belfast Intl Airport from £203

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
29 Dec — 5 Jan1
1 adult
1 adult, Economy, 0 bags

Find flight deals from USA to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from USA to Belfast Intl
Explore the most affordable flight options available from USA to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 November 2025.

Tue 2/1221:00JFK - BFS
2 stops19h 50mMultiple Airlines
Thu 4/1214:25BFS - JFK
2 stops27h 40mMultiple Airlines
Deal found 28/11£536
Tue 2/1223:55EWR - BFS
2 stops16h 55mMultiple Airlines
Thu 4/1207:15BFS - EWR
3 stops45h 44mMultiple Airlines
Deal found 28/11£588
Fri 5/1218:05BOS - BFS
3 stops25h 50mMultiple Airlines
Fri 12/1206:00BFS - BOS
2 stops33h 35mMultiple Airlines
Deal found 28/11£804
Sun 28/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Mon 29/1220:50BFS - JFK
2 stops22h 00mMultiple Airlines
Deal found 29/11£1,073
Mon 29/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Tue 30/1220:55BFS - JFK
2 stops23h 45mMultiple Airlines
Deal found 29/11£1,120
Sun 28/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Tue 30/1207:05BFS - JFK
2 stops15h 50mMultiple Airlines
Deal found 29/11£1,167
Mon 29/1220:15LAX - BFS
2 stops16h 00mMultiple Airlines
Mon 5/119:20BFS - LAX
3 stops27h 55mMultiple Airlines
Deal found 29/11£1,249
Mon 29/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Wed 31/1206:30BFS - JFK
1 stop14h 25mMultiple Airlines
Deal found 29/11£1,391
Thu 25/1219:05JFK - BFS
1 stop10h 25mMultiple Airlines
Wed 31/1207:55BFS - JFK
2 stops16h 30mMultiple Airlines
Deal found 29/11£1,399
Sun 28/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Wed 31/1206:30BFS - JFK
1 stop14h 25mMultiple Airlines
Deal found 29/11£1,435
Fri 26/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Wed 31/1206:30BFS - JFK
1 stop14h 25mMultiple Airlines
Deal found 29/11£1,492
Tue 23/1218:05JFK - BFS
1 stop11h 00mMultiple Airlines
Wed 31/1206:30BFS - JFK
1 stop14h 25mMultiple Airlines
Deal found 29/11£1,519

Cheap flight deals from USA to Belfast Intl

Keep the following information in mind while searching for USA to Belfast Intl flight deals. Data was last updated 29 November 2025.

Round-trip from

£362

One-way from

£203

Popular in

April

Cheapest in

November

Average price

£347
12/1-19/1
  • 12/1-19/1
  • 2 total stops
  • 35h 00m total
  • USA to Belfast
Search Deals
7/4
  • 7/4
  • 1 total stop
  • 29h 20m total
  • USA to Belfast
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£113 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from USA to Belfast Intl 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 29 November 2025.
Use the filters below to find and compare flights from the United States to Belfast Intl Airport that are best for you.

Fly from

USA

Fly to

Belfast Intl

Route

Depart

Return

Price

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Mon 12/1

18:05-10:05

1 stop11h 00m

Belfast Intl

Mon 19/1

20:55-15:55

1 stop24h 00m

£364

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Tue 13/1

18:05-10:05

1 stop11h 00m

Belfast Intl

Tue 20/1

06:30-15:55

1 stop14h 25m

£377

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 13/1

17:10-10:20

2 stops12h 10m

Belfast Intl

Tue 20/1

06:30-18:59

2 stops17h 29m

£434

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 12/1

17:10-20:15

2 stops22h 05m

Belfast Intl

Mon 19/1

19:20-18:59

2 stops28h 39m

£438

NewarkBelfast

EWR - BFS

EWRBFS

Newark

Tue 13/1

17:45-10:20

2 stops11h 35m

Belfast Intl

Tue 20/1

06:30-16:15

2 stops14h 45m

£445

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Sat 18/4

18:20-07:45

1 stop32h 25m

Belfast Intl

Tue 21/4

06:15-15:55

1 stop14h 40m

£461

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Wed 18/3

19:05-08:30

1 stop33h 25m

Belfast Intl

Fri 27/3

07:30-21:05

2 stops17h 35m

£464

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 11/3

20:50-22:20

2 stops21h 30m

Belfast Intl

Mon 16/3

06:30-18:50

2 stops16h 20m

£476

NewarkBelfast

EWR - BFS

EWRBFS

Newark

Sat 10/1

01:35-07:25

2 stops24h 50m

Belfast Intl

Tue 27/1

06:30-18:25

2 stops16h 55m

£477

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Mon 16/2

18:05-10:05

1 stop11h 00m

Belfast Intl

Fri 20/2

06:30-15:55

1 stop14h 25m

£491

Flights are sorted by cheapest return flights first.

Deals found on 27/11

Showing 1-10 of 40 results
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Best time to book a flight from USA to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Intl Airport

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

Currently, September is the cheapest month in which you can book a flight from USA to Belfast Intl Airport (average of £403). Flying from USA to Belfast Intl Airport in December is currently the most expensive (average of £508). 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.

Related info for your journey

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

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

    The most popular route from USA to Belfast Intl Airport is New York John F Kennedy Intl - Belfast Intl. You may also consider Newark - Belfast Intl or Seattle/Tacoma Intl - Belfast Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from USA to Belfast Intl 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 Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from USA to Belfast Intl Airport (average of £403). Flying from USA to Belfast Intl Airport in December is currently the most expensive (average of £508). 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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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Alternative routes for USA to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Cleveland to Belfast Intl flights
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How does Cheapflights help users find flights from USA to Belfast Intl?

Cheapflights makes it easy to find USA to Belfast Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from USA to Belfast Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from USA to Belfast Intl, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from USA to Belfast Intl 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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