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Cheap flights from Belfast Intl Airport to the United States from £240

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
1 Aug — 8 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to USA

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to USA
Explore the most affordable flight options available from Belfast Intl to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2026.

Thu 17/910:15
BFS
-
BOS
1 stop15h 50m
Multiple Airlines
Sun 27/923:35
BOS
-
BFS
2 stops27h 40m
Multiple Airlines
Deal found 28/6£388
Thu 27/821:10
BFS
-
MCO
1 stop26h 15m
Multiple Airlines
Thu 1/1020:30
MCO
-
BFS
1 stop14h 00m
Multiple Airlines
Deal found 30/6£477
Thu 27/821:10
BFS
-
MCO
1 stop26h 15m
Multiple Airlines
Sun 27/920:30
MCO
-
BFS
1 stop13h 50m
Multiple Airlines
Deal found 30/6£493
Thu 8/1008:10
BFS
-
BOS
2 stops39h 40m
Multiple Airlines
Tue 13/1020:50
BOS
-
BFS
2 stops19h 15m
Multiple Airlines
Deal found 1/7£495
Mon 24/820:55
BFS
-
MCO
1 stop26h 30m
Multiple Airlines
Mon 28/920:30
MCO
-
BFS
1 stop18h 55m
Multiple Airlines
Deal found 30/6£506
Sat 19/918:10
BFS
-
EWR
2 stops31h 50m
Multiple Airlines
Sat 26/920:25
EWR
-
BFS
2 stops17h 10m
Multiple Airlines
Deal found 1/7£516
Wed 26/808:15
BFS
-
MCO
1 stop15h 10m
Multiple Airlines
Thu 1/1020:30
MCO
-
BFS
1 stop14h 00m
Multiple Airlines
Deal found 30/6£517
Sat 19/906:20
BFS
-
JFK
1 stop14h 35m
Multiple Airlines
Sat 26/918:20
JFK
-
BFS
1 stop19h 15m
Multiple Airlines
Deal found 1/7£521
Mon 24/820:35
BFS
-
LGA
2 stops25h 22m
Multiple Airlines
Tue 8/910:35
LGA
-
BFS
2 stops19h 05m
Multiple Airlines
Deal found 30/6£523
Thu 27/806:40
BFS
-
EWR
2 stops35h 35m
Multiple Airlines
Mon 31/817:20
EWR
-
BFS
2 stops24h 45m
Multiple Airlines
Deal found 1/7£524
Wed 26/808:15
BFS
-
MCO
1 stop15h 10m
Multiple Airlines
Sun 27/920:30
MCO
-
BFS
1 stop18h 45m
Multiple Airlines
Deal found 30/6£529
Tue 25/808:20
BFS
-
MCO
1 stop15h 05m
Multiple Airlines
Thu 1/1020:30
MCO
-
BFS
1 stop14h 00m
Multiple Airlines
Deal found 30/6£530

Find flight deals from Belfast Intl to USA

Keep the following information in mind while searching for Belfast Intl to USA flight deals. Data was last updated 2 July 2026.

Round-trip from

£388

One-way from

£240

Popular in

June

Cheapest in

January

Average price

£623
17/9-27/9
  • 17/9-27/9
  • 3 total stops
  • 43h 30m total
  • Belfast to USA
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 41h 15m total
  • Belfast to USA
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£98 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl 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 2 July 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Thu 17/9

10:15-21:05

1 stop15h 50m

Boston Logan Intl

Sun 27/9

23:35-08:15

2 stops27h 40m

£388

BelfastOrlando

BFS - MCO

BFSMCO

Belfast Intl

Mon 24/8

20:55-18:25

1 stop26h 30m

Orlando

Mon 28/9

20:30-20:25

1 stop18h 55m

£506

BelfastNew York

BFS - LGA

BFSLGA

Belfast Intl

Mon 24/8

20:35-16:57

2 stops25h 22m

New York LaGuardia

Tue 8/9

10:35-10:40

2 stops19h 05m

£523

BelfastNewark

BFS - EWR

BFSEWR

Belfast Intl

Thu 27/8

06:40-13:15

2 stops35h 35m

Newark

Mon 31/8

17:20-23:05

2 stops24h 45m

£524

BelfastNew York

BFS - JFK

BFSJFK

Belfast Intl

Mon 24/8

21:05-22:25

3 stops30h 20m

New York John F Kennedy Intl

Tue 8/9

20:30-23:20

3 stops21h 50m

£538

BelfastNewark

BFS - EWR

BFSEWR

Belfast Intl

Thu 13/8

21:05-22:35

3 stops30h 30m

Newark

Mon 17/8

20:25-23:05

3 stops21h 40m

£578

BelfastNew York

BFS - JFK

BFSJFK

Belfast Intl

Thu 27/8

08:20-22:25

3 stops43h 05m

New York John F Kennedy Intl

Mon 31/8

20:30-23:05

3 stops21h 35m

£580

BelfastNew York

BFS - JFK

BFSJFK

Belfast Intl

Thu 1/10

21:10-15:55

1 stop23h 45m

New York John F Kennedy Intl

Tue 6/10

00:30-23:20

2 stops17h 50m

£590

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Thu 13/8

21:05-18:50

3 stops26h 45m

Boston Logan Intl

Wed 19/8

20:50-22:20

3 stops20h 30m

£590

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Wed 19/8

22:45-20:55

3 stops27h 10m

Boston Logan Intl

Wed 26/8

20:50-20:15

3 stops18h 25m

£596

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Showing 1-10 of 59 resultsSorted by cheapest first
1
2
3
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6

Best time to book a flight from Belfast Intl to USA

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

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

Currently, November is the cheapest month in which you can book a flight from Belfast Intl Airport to USA (average of £365). Flying from Belfast Intl Airport to USA in April is currently the most expensive (average of £467). 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 2 July 2026.
Read through reviews of airlines operating flights from Belfast Intl Airport to the United States, such as Aer Lingus,American Airlines, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,634 reviews
Check prices

Food

6.7

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Overall

7.3

Crew

8.1

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
1,634 reviews
Aer Lingus
7.3
Good
1,634 reviews
Check prices

Food

6.7

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Overall

7.3

Crew

8.1

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
11,769 reviews
Aer Lingus
7.3
Good
1,634 reviews
Check prices

Food

6.7

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Overall

7.3

Crew

8.1

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
8,087 reviews
Aer Lingus
7.3
Good
1,634 reviews
Check prices

Food

6.7

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Overall

7.3

Crew

8.1

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 Intl to USA. 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 Belfast Intl Airport to USA?

    The most popular flight routes from Belfast Intl Airport to USA are Belfast Intl - New York John F Kennedy Intl, Belfast Intl - Newark and Belfast Intl - New York LaGuardia.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Belfast Intl Airport to USA (average of £365). Flying from Belfast Intl Airport to USA in April is currently the most expensive (average of £467). 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

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Alternative routes for Belfast Intl 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 Intl to USA

Discover the top 3 airlines that operate flights from Belfast Intl 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 2 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£416Average£704FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£566Average£566FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£1,178Average£1,314FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast Intl to USA.

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

Certainly. Search results for flights to USA from Belfast Intl 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 Belfast Intl 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 Intl today and book when prices fit your budget.

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