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 £219 on KLM. Other airlines that offer cheap prices include Delta from £223 and Aer Lingus from £254 one-way.

In terms of precipitation, rainfall in Belfast ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast, 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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 Boston Logan Intl - Belfast Intl as they are the most popular.

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

June is one of the best times of the year to fly to Belfast from USA. Prices for June average £683 per person but you can even find prices for as low as £484. The most expensive prices can be found in the month of October. Opting for a June flight can save you 50% on your journey compared to booking in October

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.

£160+ Flights from the United States to Belfast

Cheap flight deals from USA to Belfast

Round-trip from	£340
One-way from	£160
Popular in	October
Cheapest in	June
Average price	£908

15/9-24/9
2 total stops
31h 35m total
USA to Belfast

Search Deals

2/8
1 total stop
32h 50m total
USA to Belfast

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£77 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from USA to Belfast

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 15 July 2025.

Mon 15/918:20JFK - BFS

1 stop14h 30mMultiple Airlines

Wed 24/909:35BFS - JFK

1 stop17h 05mMultiple Airlines

Deal found 14/7£340

Fri 12/918:20JFK - BHD

1 stop11h 15mMultiple Airlines

Wed 24/907:05BHD - JFK

2 stops19h 35mMultiple Airlines

Deal found 14/7£380

Mon 10/1119:25BOS - BHD

1 stop13h 50mBritish Airways

Mon 17/1109:15BHD - BOS

1 stop11h 40mBritish Airways

Deal found 13/7£388

Wed 13/818:10JFK - BHD

1 stop10h 10mBritish Airways

Tue 19/813:40BHD - JFK

1 stop11h 15mBritish Airways

Deal found 13/7£392

Sun 17/800:50JFK - BHD

1 stop15h 25mVirgin Atlantic

Wed 3/917:25BHD - JFK

1 stop27h 00mVirgin Atlantic

Deal found 13/7£399

Sun 3/820:05BOS - BHD

1 stop10h 25mAmerican Airlines

Tue 19/809:35BHD - BOS

1 stop30h 50mAmerican Airlines

Deal found 15/7£402

Mon 18/818:10JFK - BHD

1 stop10h 10mAmerican Airlines

Wed 3/913:50BHD - JFK

1 stop11h 05mAmerican Airlines

Deal found 13/7£403

Sat 13/918:50BWI - BFS

2 stops23h 35mMultiple Airlines

Sun 21/907:00BFS - BWI

2 stops15h 40mMultiple Airlines

Deal found 13/7£403

Sun 7/918:45BOS - BHD

1 stop17h 10mKLM

Tue 16/917:25BHD - BOS

1 stop28h 05mKLM

Deal found 14/7£417

Mon 4/816:50BOS - BHD

1 stop19h 05mVirgin Atlantic

Tue 19/806:40BHD - BOS

1 stop14h 55mVirgin Atlantic

Deal found 13/7£423

Sun 7/920:15BOS - BHD

1 stop15h 40mMultiple Airlines

Wed 17/906:30BHD - BOS

2 stops14h 30mMultiple Airlines

Deal found 14/7£425

Sun 14/900:50JFK - BHD

1 stop11h 05mDelta

Wed 24/917:25BHD - JFK

1 stop25h 05mDelta

Deal found 15/7£435

Best flights from USA to Belfast
Discover carefully curated flight deals from USA to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 July 2025.

Mon 15/918:20JFK - BFS

1 stop14h 30mMultiple Airlines

Wed 24/909:35BFS - JFK

1 stop17h 05mMultiple Airlines

Deal found 14/7£340

Mon 10/1119:25BOS - BHD

1 stop13h 50mBritish Airways

Mon 17/1109:15BHD - BOS

1 stop11h 40mBritish Airways

Deal found 13/7£388

Sun 17/800:50JFK - BHD

1 stop15h 25mVirgin Atlantic

Wed 3/917:25BHD - JFK

1 stop27h 00mVirgin Atlantic

Deal found 13/7£399

Sun 3/820:05BOS - BHD

1 stop10h 25mAmerican Airlines

Tue 19/809:35BHD - BOS

1 stop30h 50mAmerican Airlines

Deal found 15/7£402

Sun 7/918:45BOS - BHD

1 stop17h 10mKLM

Tue 16/917:25BHD - BOS

1 stop28h 05mKLM

Deal found 14/7£417

Sun 14/900:50JFK - BHD

1 stop11h 05mDelta

Wed 24/917:25BHD - JFK

1 stop25h 05mDelta

Deal found 15/7£435

Fri 12/918:20JFK - BHD

1 stop11h 15mMultiple Airlines

Wed 24/907:05BHD - JFK

2 stops19h 35mMultiple Airlines

Deal found 14/7£380

Wed 13/818:10JFK - BHD

1 stop10h 10mBritish Airways

Tue 19/813:40BHD - JFK

1 stop11h 15mBritish Airways

Deal found 13/7£392

Mon 18/818:10JFK - BHD

1 stop10h 10mAmerican Airlines

Wed 3/913:50BHD - JFK

1 stop11h 05mAmerican Airlines

Deal found 13/7£403

Mon 4/816:50BOS - BHD

1 stop19h 05mVirgin Atlantic

Tue 19/806:40BHD - BOS

1 stop14h 55mVirgin Atlantic

Deal found 13/7£423

Sat 13/918:50BWI - BFS

2 stops23h 35mMultiple Airlines

Sun 21/907:00BFS - BWI

2 stops15h 40mMultiple Airlines

Deal found 13/7£403

Mon 10/1115:34BOS - BHD

2 stops20h 16mDelta

Mon 17/1106:30BHD - BOS

2 stops17h 43mDelta

Deal found 13/7£466

Last-minute flights from USA to Belfast
Discover last-minute flight deals from USA to Belfast. Data last updated 15 July 2025 and is based on user searches.

Tue 15/717:41BOS - BHD

2 stops22h 24mDelta

Tue 22/706:30BHD - BOS

1 stop15h 00mDelta

Deal found 13/7£458

Sun 20/718:20JFK - BFS

1 stop10h 35mMultiple Airlines

Sun 17/818:00BFS - JFK

1 stop33h 15mMultiple Airlines

Deal found 13/7£607

Mon 21/700:50JFK - BHD

1 stop15h 25mKLM

Wed 13/806:30BHD - JFK

1 stop13h 55mKLM

Deal found 12/7£481

Tue 22/719:29JFK - BHD

1 stop10h 06mBritish Airways

Wed 13/810:00BHD - JFK

1 stop11h 59mBritish Airways

Deal found 12/7£414

Tue 22/721:10JFK - BHD

1 stop18h 55mDelta

Wed 13/806:30BHD - JFK

2 stops17h 07mDelta

Deal found 12/7£495

Tue 22/723:40JFK - BHD

2 stops14h 45mMultiple Airlines

Wed 30/706:50BHD - JFK

1 stop20h 10mMultiple Airlines

Deal found 13/7£586

Tue 22/716:40LGA - BFS

2 stops19h 00mMultiple Airlines

Wed 30/705:45BFS - LGA

3 stops18h 51mMultiple Airlines

Deal found 13/7£624

Tue 22/712:00JFK - BHD

2 stops17h 35mFinnair

Wed 30/720:15BHD - JFK

2 stops29h 45mFinnair

Deal found 13/7£1,100

Wed 23/700:50JFK - BHD

1 stop15h 25mVirgin Atlantic

Tue 29/706:30BHD - JFK

2 stops20h 39mVirgin Atlantic

Deal found 14/7£706

Thu 24/709:00EWR - BFS

2 stops26h 15mMultiple Airlines

Tue 29/705:55BFS - EWR

2 stops19h 00mMultiple Airlines

Deal found 14/7£648

Sat 26/716:45BOS - BHD

1 stop23h 30mKLM

Fri 1/817:25BHD - BOS

1 stop28h 10mKLM

Deal found 15/7£435

Sun 3/820:05BOS - BHD

1 stop10h 25mAmerican Airlines

Tue 19/809:35BHD - BOS

1 stop30h 50mAmerican Airlines

Deal found 15/7£402

One-way flights from USA to Belfast
Search for one-way flight options from USA to Belfast. Find affordable one-way fares based on user searches. Data last updated 15 July 2025.

Sat 2/818:20JFK - BHD

1 stop32h 50mMultiple Airlines

Deal found 13/7£160

Wed 23/700:15JFK - BFS

1 stop33h 15mMultiple Airlines

Deal found 14/7£169

Thu 24/715:30EWR - BFS

2 stops18h 00mMultiple Airlines

Deal found 14/7£186

Thu 24/715:30LGA - BFS

2 stops18h 00mMultiple Airlines

Deal found 14/7£186

Thu 25/914:18BOS - BFS

2 stops42h 12mMultiple Airlines

Deal found 14/7£194

Mon 18/822:20IAD - BFS

3 stops37h 20mMultiple Airlines

Deal found 15/7£205

Mon 11/805:45BWI - BFS

2 stops44h 45mMultiple Airlines

Deal found 15/7£206

Thu 25/914:18BOS - BHD

2 stops39h 17mMultiple Airlines

Deal found 14/7£211

Fri 5/920:15BOS - BHD

1 stop15h 40mKLM

Deal found 14/7£219

Fri 5/913:20BOS - BHD

2 stops22h 35mDelta

Deal found 14/7£223

Mon 5/119:05JFK - BHD

1 stop9h 40mAer Lingus

Deal found 15/7£254

Mon 5/115:00JFK - BHD

2 stops20h 50mDelta

Deal found 15/7£266

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Mon 15/9

18:20-13:50

1 stop14h 30m

Belfast Intl

Wed 24/9

09:35-21:40

1 stop17h 05m

£340

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Fri 12/9

18:20-10:35

1 stop11h 15m

Belfast City

Wed 24/9

07:05-21:40

2 stops19h 35m

£380

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 10/11

19:25-14:15

1 stop13h 50m

Belfast City

Mon 17/11

09:15-15:55

1 stop11h 40m

£388

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Wed 13/8

18:10-09:20

1 stop10h 10m

Belfast City

Tue 19/8

13:40-19:55

1 stop11h 15m

£392

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Sun 17/8

00:50-21:15

1 stop15h 25m

Belfast City

Wed 3/9

17:25-15:25

1 stop27h 00m

£399

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 3/8

20:05-11:30

1 stop10h 25m

Belfast City

Tue 19/8

09:35-11:25

1 stop30h 50m

£402

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Mon 18/8

18:10-09:20

1 stop10h 10m

Belfast City

Wed 3/9

13:50-19:55

1 stop11h 05m

£403

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sat 13/9

18:50-23:25

2 stops23h 35m

Belfast Intl

Sun 21/9

07:00-17:40

2 stops15h 40m

£403

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 7/9

18:45-16:55

1 stop17h 10m

Belfast City

Tue 16/9

17:25-16:30

1 stop28h 05m

£417

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 4/8

16:50-16:55

1 stop19h 05m

Belfast City

Tue 19/8

06:40-16:35

1 stop14h 55m

£423

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 43 results

...

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, January is the cheapest month in which you can book a flight from USA to Belfast (average of £67). Flying from USA to Belfast in July is currently the most expensive (average of £90). 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?

When flying from USA to Belfast, 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 Belfast

Read reviews from past customers who have flown with Delta, KLM, andVirgin Atlantic from the United States to Belfast. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,957 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,957 reviews

Delta

8.0

Very Good

7,957 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,372 reviews

Delta

8.0

Very Good

7,957 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

655 reviews

Delta

8.0

Very Good

7,957 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,957 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Aer Lingus

7.1

Good

1,165 reviews

Delta

8.0

Very Good

7,957 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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 £219 on KLM. Other airlines that offer cheap prices include Delta from £223 and Aer Lingus from £254 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 Boston Logan Intl - Belfast Intl 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, January is the cheapest month in which you can book a flight from USA to Belfast (average of £67). Flying from USA to Belfast in July is currently the most expensive (average of £90). 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

Alternative routes for USA to Belfast

Fly with Cheapflights

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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Cheapflights is completely free to use, so you can start saving the moment you arrive.

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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 the United States to Belfast from £160

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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.

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 15 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from USA to Belfast

Cheapest flights from USA to BelfastExplore 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 15 July 2025.

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 15 July 2025.

Cheapflights Fare Finder

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

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.

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?

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 15 July 2025.

Reviews of airlines servicing Belfast

Read reviews from past customers who have flown with Delta, KLM, andVirgin Atlantic from the United States to Belfast. Users can see the overall rating for each airline as well as how each is rated 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 USA to Belfast. 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 USA to Belfast one-way?

What are the most popular routes from USA to Belfast?

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

How can I find direct flights from USA to Belfast?

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

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

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 USA to Belfast

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

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 USA to Belfast?

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 15 July 2025.