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Cheap flights from the United States to Northern Ireland from £186

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
5 May — 12 May1
1 adult

Cheap flight deals from USA to Northern Ireland

Keep the following information in mind while searching for USA to Northern Ireland flight deals. Data was last updated 30 April 2025.

Round-trip from

£426

One-way from

£186

Popular in

October

Cheapest in

December

Average price

£557
Iberia
  • Iberia
  • 15/9-24/9
  • 2 total stops
  • 32h 10m total
  • USA to Northern Ireland
Search Deals
7/7
  • 7/7
  • 1 total stop
  • 11h 40m total
  • USA to Northern Ireland
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from USA to Northern Ireland

Cheapest flights from USA to Northern Ireland
Explore the most affordable flight options available from USA to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Mon 5/519:15BOS - BFS
2 stops13h 35mMultiple Airlines
Tue 13/506:45BFS - BOS
2 stops16h 05mMultiple Airlines
Deal found 28/4£424
Mon 15/919:40BOS - BHD
1 stop16h 50mIberia
Wed 24/906:50BHD - BOS
1 stop15h 20mIberia
Deal found 29/4£426
Mon 8/922:00BOS - BHD
1 stop12h 40mMultiple Airlines
Tue 16/916:25BHD - BOS
1 stop23h 50mMultiple Airlines
Deal found 29/4£430
Wed 27/821:55BOS - BHD
1 stop12h 40mAmerican Airlines
Wed 3/916:05BHD - BOS
1 stop11h 40mAmerican Airlines
Deal found 30/4£438
Thu 29/518:20JFK - BFS
1 stop18h 55mMultiple Airlines
Thu 12/619:35BFS - JFK
1 stop31h 40mMultiple Airlines
Deal found 29/4£449
Wed 27/817:59BOS - BHD
2 stops14h 31mBritish Airways
Wed 3/906:50BHD - BOS
2 stops18h 00mBritish Airways
Deal found 30/4£459
Thu 29/518:20JFK - BHD
1 stop15h 50mMultiple Airlines
Thu 12/611:50BHD - JFK
2 stops15h 25mMultiple Airlines
Deal found 29/4£494
Sat 17/517:20MIA - BFS
1 stop33h 25mMultiple Airlines
Wed 21/506:10BFS - MIA
1 stop13h 10mMultiple Airlines
Deal found 29/4£515
Tue 16/920:50MIA - BHD
1 stop15h 40mAmerican Airlines
Tue 30/909:35BHD - MIA
1 stop13h 45mAmerican Airlines
Deal found 30/4£519
Mon 10/1122:05MIA - BHD
1 stop15h 30mMultiple Airlines
Mon 17/1119:30BHD - MIA
1 stop24h 15mMultiple Airlines
Deal found 29/4£520
Tue 29/418:50BOS - BHD
2 stops17h 05mDelta
Wed 7/506:30BHD - BOS
2 stops17h 38mDelta
Deal found 29/4£535
Fri 29/822:55JFK - BHD
1 stop14h 20mAmerican Airlines
Sat 6/907:05BHD - JFK
1 stop15h 00mAmerican Airlines
Deal found 29/4£538

Cheapflights Fare Finder

Customise your flight search to find flights from USA to Northern Ireland 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 30 April 2025.
Use the filters below to find and compare flights from the United States to Northern Ireland that are best for you.

Fly from

USA

Fly to

Northern Ireland

Route

Depart

Return

Price

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 15/9

19:40-17:30

1 stop16h 50m

Belfast City

Wed 24/9

06:50-17:10

1 stop15h 20m

£426

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 8/9

22:00-15:40

1 stop12h 40m

Belfast City

Tue 16/9

16:25-11:15

1 stop23h 50m

£430

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 27/8

21:55-15:35

1 stop12h 40m

Belfast City

Wed 3/9

16:05-22:45

1 stop11h 40m

£438

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Thu 29/5

18:20-18:15

1 stop18h 55m

Belfast Intl

Thu 12/6

19:35-22:15

1 stop31h 40m

£449

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 27/8

17:59-13:30

2 stops14h 31m

Belfast City

Wed 3/9

06:50-19:50

2 stops18h 00m

£459

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Thu 29/5

18:20-15:10

1 stop15h 50m

Belfast City

Thu 12/6

11:50-22:15

2 stops15h 25m

£494

MiamiBelfast

MIA - BFS

MIABFS

Miami

Sat 17/5

17:20-07:45

1 stop33h 25m

Belfast Intl

Wed 21/5

06:10-14:20

1 stop13h 10m

£498

MiamiBelfast

MIA - BHD

MIABHD

Miami

Tue 16/9

20:50-15:20

1 stop13h 30m

Belfast City

Tue 30/9

09:35-18:20

1 stop13h 45m

£518

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Fri 29/8

22:55-18:15

1 stop14h 20m

Belfast City

Sat 6/9

07:05-17:05

1 stop15h 00m

£538

NewarkBelfast

EWR - BFS

EWRBFS

Newark

Wed 21/5

15:05-16:40

2 stops20h 35m

Belfast Intl

Mon 26/5

15:30-21:00

1 stop34h 30m

£549

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 53 results
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Best time to book a flight from USA to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland 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 Northern Ireland

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

Currently, January is the cheapest month in which you can book a flight from USA to Northern Ireland (average of £67). Flying from USA to Northern Ireland 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 NIR?

Find hourly flight availability from USA to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

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

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Northern Ireland 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 Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Northern Ireland, 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).

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. 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 Northern Ireland. Reviews last updated 30 April 2025.
See what other customers who have flown with Delta, KLM and Finnair from USA to Northern Ireland have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from USA to Northern Ireland. 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 Northern Ireland one-way?

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at £261. American Airlines flights start at £266 while deals on British Airways start at £290 one-way.

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

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

  • How can I find direct flights from USA to Northern Ireland?

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

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

    Yes. Cheapflights offers flight deals from USA to Northern Ireland 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 Northern Ireland?

    Currently, January is the cheapest month in which you can book a flight from USA to Northern Ireland (average of £67). Flying from USA to Northern Ireland 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

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

Alternative routes for USA to Northern Ireland

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