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Cheap flights from Belfast to the United States from £259

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LAX
16 Jul — 23 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to USA

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to USA
Explore the most affordable flight options available from Belfast to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 June 2026.

Tue 18/813:45
BHD
-
BOS
1 stop11h 20m
British Airways
Tue 25/821:50
BOS
-
BHD
1 stop12h 30m
British Airways
Deal found 15/6£405
Thu 20/814:20
BHD
-
BOS
1 stop13h 15m
British Airways
Thu 27/819:35
BOS
-
BHD
1 stop9h 35m
British Airways
Deal found 15/6£406
Thu 10/914:50
BFS
-
MCO
1 stop32h 35m
Multiple Airlines
Sun 27/920:30
MCO
-
BFS
1 stop34h 45m
Multiple Airlines
Deal found 12/6£415
Tue 18/813:45
BHD
-
BOS
1 stop13h 50m
British Airways
Thu 27/819:35
BOS
-
BHD
1 stop9h 35m
British Airways
Deal found 15/6£432
Mon 17/809:40
BHD
-
BOS
1 stop12h 20m
British Airways
Sat 29/819:35
BOS
-
BHD
1 stop9h 30m
British Airways
Deal found 15/6£456
Wed 19/810:05
BHD
-
BOS
1 stop11h 55m
British Airways
Sun 30/819:30
BOS
-
BHD
1 stop10h 00m
British Airways
Deal found 15/6£456
Tue 18/813:45
BHD
-
BOS
1 stop13h 50m
British Airways
Sun 30/819:30
BOS
-
BHD
1 stop10h 00m
British Airways
Deal found 15/6£457
Wed 19/816:05
BHD
-
BOS
1 stop11h 30m
British Airways
Sat 29/819:35
BOS
-
BHD
1 stop9h 30m
British Airways
Deal found 15/6£458
Thu 20/814:20
BHD
-
BOS
1 stop13h 15m
British Airways
Wed 26/821:50
BOS
-
BHD
1 stop12h 50m
British Airways
Deal found 15/6£459
Mon 17/811:35
BHD
-
BOS
1 stop10h 25m
British Airways
Thu 27/819:35
BOS
-
BHD
1 stop9h 35m
British Airways
Deal found 15/6£460
Thu 20/816:35
BHD
-
BOS
1 stop11h 00m
British Airways
Fri 28/821:50
BOS
-
BHD
1 stop12h 40m
British Airways
Deal found 15/6£461
Thu 10/920:40
BHD
-
MCO
1 stop26h 45m
Multiple Airlines
Sun 27/920:30
MCO
-
BHD
1 stop30h 05m
Multiple Airlines
Deal found 12/6£462

Find flight deals from Belfast to USA

Keep the following information in mind while searching for Belfast to USA flight deals. Data was last updated 16 June 2026.

Round-trip from

£405

One-way from

£259

Popular in

May

Cheapest in

January

Average price

£457
British Airways
  • British Airways
  • 18/8-25/8
  • 2 total stops
  • 23h 50m total
  • Belfast to USA
Search Deals
3/9
  • 3/9
  • 1 total stop
  • 16h 25m total
  • Belfast to USA
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to USA 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 16 June 2026.
Use the filters below to find and compare flights from Belfast to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastOrlando

BFS - MCO

BFSMCO

Belfast Intl

Thu 10/9

21:05-18:25

2 stops26h 20m

Orlando

Sun 27/9

20:30-21:55

1 stop20h 25m

£447

BelfastOrlando

BHD - MCO

BHDMCO

Belfast City

Thu 10/9

20:40-18:25

1 stop26h 45m

Orlando

Sun 27/9

20:30-07:35

1 stop30h 05m

£462

BelfastOrlando

BFS - MCO

BFSMCO

Belfast Intl

Sun 13/9

19:05-18:25

1 stop28h 20m

Orlando

Sun 20/9

20:30-15:20

1 stop13h 50m

£485
Fastest return journey

BelfastBoston

BHD - BOS

BHDBOS

Belfast City

Thu 27/8

14:20-20:05

1 stop10h 45m

Boston Logan Intl

Thu 3/9

19:40-10:10

1 stop9h 30m

£488

BelfastBoston

BHD - BOS

BHDBOS

Belfast City

Fri 25/9

11:00-20:05

1 stop14h 05m

Boston Logan Intl

Tue 29/9

21:50-15:20

1 stop12h 30m

£489

BelfastBoston

BHD - BOS

BHDBOS

Belfast City

Wed 9/9

11:35-20:05

1 stop13h 30m

Boston Logan Intl

Fri 25/9

17:28-15:30

2 stops17h 02m

£513

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Sat 21/11

15:05-21:05

1 stop11h 00m

New York John F Kennedy Intl

Fri 27/11

18:15-10:30

1 stop11h 15m

£527

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Wed 9/9

20:35-16:55

2 stops25h 20m

New York John F Kennedy Intl

Sun 13/9

18:40-10:30

1 stop10h 50m

£540

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Thu 1/10

06:30-16:55

2 stops15h 25m

New York John F Kennedy Intl

Mon 5/10

20:20-12:55

1 stop11h 35m

£541

BelfastBoston

BHD - BOS

BHDBOS

Belfast City

Thu 3/9

06:30-22:35

1 stop21h 05m

Boston Logan Intl

Mon 7/9

21:50-12:55

1 stop10h 05m

£544

Flights are sorted by cheapest return flights first.

Deals found on 14/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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6

Best time to book a flight from Belfast to USA

Have a flexible travel schedule? Discover the best time to fly to USA from Belfast 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 Belfast to the United States

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

Currently, November is the cheapest month in which you can book a flight from Belfast to USA (average of £360). Flying from Belfast to USA in April is currently the most expensive (average of £461). 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.

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to USA. Reviews last updated 16 June 2026.
Check out reviews from past customers who have flown with Aer Lingus,American Airlines, andBritish Airways from Belfast to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,604 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Overall

7.3

Crew

8.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,604 reviews
Aer Lingus
7.3
Good
1,604 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Overall

7.3

Crew

8.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
American Airlines
7.1
Good
11,669 reviews
Aer Lingus
7.3
Good
1,604 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Overall

7.3

Crew

8.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
British Airways
6.7
Okay
8,053 reviews
Aer Lingus
7.3
Good
1,604 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Overall

7.3

Crew

8.1

Food

6.7

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

Find useful and relevant information for your journey from Belfast to USA. 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 Belfast to USA?

    Departing from Belfast to USA will take you 10h 45m. The distance between Belfast and USA is about 2981 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Belfast to USA (average of £360). Flying from Belfast to USA in April is currently the most expensive (average of £461). 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 Belfast to USA

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Belfast to USA

Discover the top 3 airlines that operate flights from Belfast to USA. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£394Average£648FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£559Average£559FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£1,163Average£1,298FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Belfast to USA via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to USA 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 Belfast to USA with no change fees?

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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to USA from Belfast today and book when prices fit your budget.

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