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

The cheapet airlines for a one-way flight from Belfast to USA are Iberia (£591), British Airways (£648), and Delta (£1,357).

In terms of precipitation, rainfall in USA ranges from 71.0 - 114.0 inches per month. July is typically the wettest month, when rainfall can reach 114.0 mm. February is typically the driest time to visit USA when rainfall is around 71.0 mm.

If weather is an important factor for your trip to USA, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

What are the most popular routes from Belfast to USA?

When deciding which route to take from Belfast to USA consider Belfast Intl - Seattle/Tacoma Intl, Belfast Intl - Orlando or Belfast Intl - Miami as they are the most popular.

How far in advance should I book a flight from Belfast to USA?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 50 days in advance, which can save you up to 100% on flights from Belfast to USA compared to booking the week you need them. Waiting 50 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £441. For sooner than that we have options available in the next 3 days from £1,336.

What is the cheapest month to fly from Belfast to USA?

May can be a great time to fly to USA from Belfast with a flight ticket averaging about £479. Cheapflights users have found deals in the month of May for as cheap as £373. The most expensive prices can be found in the month of August.

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.

£570+ Flights from Belfast to the United States

Cheap flight deals from Belfast to USA

Round-trip from	£363
One-way from	£257
Popular in	August
Cheapest in	May
Average price	£534

4/9-7/9
2 total stops
25h 20m total
Belfast to USA

Search Deals

26/9
1 total stop
26h 20m total
Belfast to USA

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£38 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 July 2025

Search Deals

Find flight deals from Belfast to USA

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 1 July 2025.

Thu 4/906:10BFS - JFK

1 stop14h 45mMultiple Airlines

Sun 7/918:20JFK - BFS

1 stop10h 35mMultiple Airlines

Deal found 29/6£363

Sat 13/916:30BFS - MCO

1 stop30h 55mMultiple Airlines

Sun 28/920:40MCO - BFS

1 stop30h 00mMultiple Airlines

Deal found 28/6£373

Thu 4/914:15BHD - JFK

1 stop12h 45mBritish Airways

Sun 7/919:30JFK - BHD

1 stop12h 35mBritish Airways

Deal found 29/6£405

Mon 8/1214:15BHD - JFK

1 stop30h 35mMultiple Airlines

Thu 11/1218:15JFK - BHD

1 stop20h 20mMultiple Airlines

Deal found 30/6£406

Sat 13/907:00BHD - MCO

1 stop16h 25mMultiple Airlines

Sun 28/920:40MCO - BHD

1 stop18h 45mMultiple Airlines

Deal found 28/6£413

Sun 24/820:05BHD - JFK

1 stop21h 35mFinnair

Tue 9/919:30JFK - BHD

1 stop10h 05mFinnair

Deal found 30/6£434

Sun 24/815:50BHD - JFK

1 stop24h 15mAmerican Airlines

Tue 9/919:30JFK - BHD

1 stop10h 05mAmerican Airlines

Deal found 30/6£438

Thu 18/906:30BHD - JFK

1 stop10h 50mDelta

Sun 21/900:50JFK - BHD

1 stop15h 25mDelta

Deal found 30/6£454

Tue 12/806:15BFS - MIA

1 stop13h 05mMultiple Airlines

Tue 19/817:20MIA - BFS

1 stop33h 20mMultiple Airlines

Deal found 28/6£478

Tue 16/909:35BHD - MCO

1 stop34h 30mBritish Airways

Thu 25/921:00MCO - BHD

1 stop13h 30mBritish Airways

Deal found 30/6£482

Sun 24/807:00BFS - EWR

1 stop33h 05mMultiple Airlines

Tue 9/908:30EWR - BFS

1 stop23h 50mMultiple Airlines

Deal found 30/6£502

Mon 8/906:30BHD - MIA

2 stops22h 05mDelta

Sun 28/919:35MIA - BHD

2 stops20h 40mDelta

Deal found 30/6£502

Best flights from Belfast to USA
Discover carefully curated flight deals from Belfast to USA that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 July 2025.

Thu 4/906:10BFS - JFK

1 stop14h 45mMultiple Airlines

Sun 7/918:20JFK - BFS

1 stop10h 35mMultiple Airlines

Deal found 29/6£363

Thu 4/914:15BHD - JFK

1 stop12h 45mBritish Airways

Sun 7/919:30JFK - BHD

1 stop12h 35mBritish Airways

Deal found 29/6£405

Sun 24/820:05BHD - JFK

1 stop21h 35mFinnair

Tue 9/919:30JFK - BHD

1 stop10h 05mFinnair

Deal found 30/6£434

Sun 24/815:50BHD - JFK

1 stop24h 15mAmerican Airlines

Tue 9/919:30JFK - BHD

1 stop10h 05mAmerican Airlines

Deal found 30/6£438

Thu 18/906:30BHD - JFK

1 stop10h 50mDelta

Sun 21/900:50JFK - BHD

1 stop15h 25mDelta

Deal found 30/6£454

Thu 13/1106:30BHD - MCO

1 stop15h 25mKLM

Wed 26/1117:25MCO - BHD

2 stops18h 25mKLM

Deal found 28/6£510

Thu 18/906:35BHD - JFK

2 stops17h 20mIberia

Mon 22/920:40JFK - BHD

2 stops19h 05mIberia

Deal found 30/6£526

Mon 28/717:25BHD - JFK

1 stop10h 25mVirgin Atlantic

Sun 3/800:50JFK - BHD

1 stop11h 05mVirgin Atlantic

Deal found 29/6£572

Thu 21/811:00BHD - JFK

1 stop11h 15mAer Lingus

Sun 24/816:55JFK - BHD

2 stops15h 00mAer Lingus

Deal found 29/6£636

Sat 13/916:30BFS - MCO

1 stop30h 55mMultiple Airlines

Sun 28/920:40MCO - BFS

1 stop30h 00mMultiple Airlines

Deal found 28/6£373

Mon 8/1214:15BHD - JFK

1 stop30h 35mMultiple Airlines

Thu 11/1218:15JFK - BHD

1 stop20h 20mMultiple Airlines

Deal found 30/6£406

Tue 16/909:35BHD - MCO

1 stop34h 30mBritish Airways

Thu 25/921:00MCO - BHD

1 stop13h 30mBritish Airways

Deal found 30/6£482

Last-minute flights from Belfast to USA
Discover last-minute flight deals from Belfast to USA. Data last updated 1 July 2025 and is based on user searches.

Sat 5/709:40BFS - MCO

1 stop13h 45mMultiple Airlines

Sun 6/720:40MCO - BFS

1 stop30h 00mMultiple Airlines

Deal found 28/6£711

Sat 5/709:35BHD - MCO

1 stop14h 25mBritish Airways

Sun 6/721:00MCO - BHD

1 stop15h 40mBritish Airways

Deal found 28/6£719

Sat 5/707:00BHD - MCO

1 stop16h 25mMultiple Airlines

Tue 8/720:30MCO - BHD

1 stop12h 15mMultiple Airlines

Deal found 30/6£780

Sat 5/705:10BFS - EWR

2 stops20h 50mMultiple Airlines

Sat 12/717:35EWR - BFS

2 stops24h 15mMultiple Airlines

Deal found 30/6£926

Tue 8/705:55BFS - JFK

1 stop15h 55mMultiple Airlines

Tue 15/721:20JFK - BFS

1 stop14h 20mMultiple Airlines

Deal found 29/6£521

Tue 8/717:25BHD - JFK

1 stop24h 55mKLM

Mon 14/700:50JFK - BHD

1 stop15h 25mKLM

Deal found 29/6£649

Wed 9/716:05BHD - JFK

1 stop10h 55mBritish Airways

Thu 17/709:45JFK - BHD

1 stop18h 00mBritish Airways

Deal found 29/6£429

Wed 9/706:50BHD - JFK

2 stops19h 10mAmerican Airlines

Mon 14/709:45JFK - BHD

1 stop18h 05mAmerican Airlines

Deal found 29/6£449

Wed 9/706:00BFS - SWF

2 stops17h 05mMultiple Airlines

Tue 15/719:15SWF - BFS

2 stops19h 05mMultiple Airlines

Deal found 29/6£867

Wed 9/706:50BHD - JFK

1 stop10h 50mBritish Airways

Mon 14/709:45JFK - BHD

1 stop18h 05mBritish Airways

Deal found 29/6£429

Thu 10/706:30BHD - JFK

2 stops17h 22mDelta

Wed 16/714:30JFK - BHD

2 stops21h 25mDelta

Deal found 29/6£762

Fri 11/707:00BHD - JFK

1 stop13h 55mMultiple Airlines

Tue 15/718:20JFK - BHD

2 stops12h 20mMultiple Airlines

Deal found 29/6£654

One-way flights from Belfast to USA
Search for one-way flight options from Belfast to USA. Find affordable one-way fares based on user searches. Data last updated 1 July 2025.

Fri 26/921:05BFS - MCO

1 stop26h 20mMultiple Airlines

Deal found 30/6£257

Fri 26/916:00BHD - MCO

1 stop31h 25mMultiple Airlines

Deal found 30/6£289

Wed 23/717:05BFS - JFK

2 stops33h 55mMultiple Airlines

Deal found 29/6£336

Tue 22/710:20BHD - JFK

2 stops16h 40mMultiple Airlines

Deal found 29/6£394

Mon 14/721:55BFS - MIA

3 stops47h 04mMultiple Airlines

Deal found 29/6£399

Wed 13/805:45BFS - SFO

3 stops23h 40mMultiple Airlines

Deal found 29/6£435

Wed 23/717:20BFS - EWR

2 stops32h 40mMultiple Airlines

Deal found 29/6£446

Thu 10/706:10BFS - LGA

2 stops40h 20mMultiple Airlines

Deal found 29/6£466

Mon 14/714:30BHD - MIA

1 stop28h 50mMultiple Airlines

Deal found 29/6£574

Sun 20/706:50BHD - JFK

1 stop15h 09mIberia

Deal found 30/6£591

Sun 20/723:30BFS - SWF

3 stops23h 35mMultiple Airlines

Deal found 30/6£594

Mon 14/706:40BHD - MIA

1 stop12h 45mBritish Airways

Deal found 29/6£648

Cheapflights Fare Finder

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

BelfastNew York

BFS - JFK

BFSJFK

Belfast Intl

Thu 4/9

06:10-15:55

1 stop14h 45m

New York John F Kennedy Intl

Sun 7/9

18:20-09:55

1 stop10h 35m

£363

BelfastOrlando

BFS - MCO

BFSMCO

Belfast Intl

Sat 13/9

16:30-18:25

1 stop30h 55m

Orlando

Sun 28/9

20:40-07:40

1 stop30h 00m

£373

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Thu 4/9

14:15-22:00

1 stop12h 45m

New York John F Kennedy Intl

Sun 7/9

19:30-13:05

1 stop12h 35m

£405

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Mon 8/12

14:15-15:50

1 stop30h 35m

New York John F Kennedy Intl

Thu 11/12

18:15-19:35

1 stop20h 20m

£406

BelfastOrlando

BHD - MCO

BHDMCO

Belfast City

Sat 13/9

07:00-18:25

1 stop16h 25m

Orlando

Sun 28/9

20:40-20:25

1 stop18h 45m

£413

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Sun 24/8

20:05-12:40

1 stop21h 35m

New York John F Kennedy Intl

Tue 9/9

19:30-10:35

1 stop10h 05m

£434

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Sun 24/8

15:50-11:05

1 stop24h 15m

New York John F Kennedy Intl

Tue 9/9

19:30-10:35

1 stop10h 05m

£438

BelfastNew York

BHD - JFK

BHDJFK

Belfast City

Thu 18/9

06:30-12:20

1 stop10h 50m

New York John F Kennedy Intl

Sun 21/9

00:50-21:15

1 stop15h 25m

£454

BelfastMiami

BFS - MIA

BFSMIA

Belfast Intl

Tue 12/8

06:15-14:20

1 stop13h 05m

Miami

Tue 19/8

17:20-07:40

1 stop33h 20m

£478

BelfastOrlando

BHD - MCO

BHDMCO

Belfast City

Tue 16/9

09:35-15:05

1 stop34h 30m

Orlando

Thu 25/9

21:00-15:30

1 stop13h 30m

£482

Flights are sorted by cheapest return flights first.

Deals found on 30/6

Showing 1-10 of 40 results

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, January is the cheapest month in which you can book a flight from Belfast to USA (average of £575). Flying from Belfast to USA in July is currently the most expensive (average of £811). 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 BFS to US?

When flying from Belfast to USA, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing USA

Check out reviews from past customers who have flown with Delta, KLM, andFinnair 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.

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Delta

8.0

Very Good

7,973 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

KLM

7.8

Good

1,366 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Finnair

7.6

Good

1,301 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Virgin Atlantic

7.4

Good

654 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,973 reviews

Check prices

Reviews

1 / 20

6.0

Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Related info for your journey

What are the cheapest airlines to fly from Belfast to USA one-way?
The cheapet airlines for a one-way flight from Belfast to USA are Iberia (£591), British Airways (£648), and Delta (£1,357).
What are the most popular routes from Belfast to USA?
When deciding which route to take from Belfast to USA consider Belfast Intl - Seattle/Tacoma Intl, Belfast Intl - Orlando or Belfast Intl - Miami 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, January is the cheapest month in which you can book a flight from Belfast to USA (average of £575). Flying from Belfast to USA in July is currently the most expensive (average of £811). 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

Top 2 airlines flying from Belfast to USA

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£338	Average£549	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£407	Average£576	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Belfast to the United States from £257

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to USA

Keep the following information in mind while searching for Belfast to USA flight deals. Data was last updated 1 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Belfast to USA

Cheapest flights from Belfast to USAExplore 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 1 July 2025.

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 1 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast to the United States that are best for you.

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.

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?

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

Find hourly flight availability from Belfast to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 July 2025.

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 1 July 2025.

Check out reviews from past customers who have flown with Delta, KLM, andFinnair 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.

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.

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

What are the most popular routes from Belfast to USA?

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

How can I find direct flights from Belfast to USA?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Belfast to USA

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

Top 2 airlines flying from Belfast to USA

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 1 July 2025.