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Cheap flights from the United States to Northern Ireland from £146

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
23 Apr — 30 Apr1
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 18 April 2025.

Round-trip from

£424

One-way from

£146

Popular in

October

Cheapest in

December

Average price

£564
7/5-14/5
  • 7/5-14/5
  • 5 total stops
  • 61h 25m total
  • USA to Northern Ireland
Search Deals
11/7
  • 11/7
  • 1 total stop
  • 11h 15m total
  • USA to Northern Ireland
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 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 18 April 2025.

Wed 7/520:25JFK - BFS
3 stops17h 10mMultiple Airlines
Wed 14/507:00BFS - JFK
2 stops44h 15mMultiple Airlines
Deal found 17/4£424
Tue 29/419:15BOS - BFS
2 stops22h 55mMultiple Airlines
Wed 7/506:00BFS - BOS
2 stops16h 50mMultiple Airlines
Deal found 18/4£438
Thu 15/517:20MIA - BFS
1 stop25h 05mMultiple Airlines
Sun 8/622:10BFS - MIA
1 stop21h 10mMultiple Airlines
Deal found 17/4£439
Mon 8/922:00BOS - BHD
1 stop12h 40mBritish Airways
Tue 16/913:40BHD - BOS
1 stop14h 05mBritish Airways
Deal found 17/4£483
Mon 5/518:20JFK - BHD
1 stop21h 05mMultiple Airlines
Sat 10/507:00BHD - JFK
1 stop13h 55mMultiple Airlines
Deal found 17/4£491
Tue 9/917:45ORD - BHD
1 stop10h 50mFinnair
Tue 23/920:20BHD - ORD
1 stop24h 30mFinnair
Deal found 17/4£502
Sun 27/419:25BOS - BHD
1 stop12h 40mAmerican Airlines
Tue 13/513:40BHD - BOS
1 stop11h 30mAmerican Airlines
Deal found 17/4£502
Sun 25/519:00JFK - BHD
1 stop9h 45mAer Lingus
Sun 8/614:25BHD - JFK
1 stop31h 50mAer Lingus
Deal found 16/4£504
Tue 29/421:55BOS - BHD
1 stop12h 25mMultiple Airlines
Wed 7/506:50BHD - BOS
1 stop20h 40mMultiple Airlines
Deal found 17/4£504
Tue 13/516:20ORD - BHD
1 stop22h 45mVirgin Atlantic
Tue 20/517:25BHD - ORD
1 stop27h 15mVirgin Atlantic
Deal found 17/4£506
Tue 9/919:10ORD - BHD
1 stop14h 10mAmerican Airlines
Tue 23/909:35BHD - ORD
2 stops17h 50mAmerican Airlines
Deal found 17/4£510
Tue 17/612:00EWR - BFS
2 stops23h 40mMultiple Airlines
Fri 20/610:55BFS - EWR
1 stop16h 35mMultiple Airlines
Deal found 17/4£512

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 18 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

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Wed 7/5

20:25-18:35

3 stops17h 10m

Belfast Intl

Wed 14/5

07:00-22:15

2 stops44h 15m

£424

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 29/4

19:15-23:10

2 stops22h 55m

Belfast Intl

Wed 7/5

06:00-17:50

2 stops16h 50m

£438

MiamiBelfast

MIA - BFS

MIABFS

Miami

Thu 15/5

17:20-23:25

1 stop25h 05m

Belfast Intl

Sun 8/6

22:10-14:20

1 stop21h 10m

£439

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 8/9

22:00-15:40

1 stop12h 40m

Belfast City

Tue 16/9

13:40-22:45

1 stop14h 05m

£483

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Mon 5/5

18:20-20:25

1 stop21h 05m

Belfast City

Sat 10/5

07:00-15:55

1 stop13h 55m

£491

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 9/9

17:45-10:35

1 stop10h 50m

Belfast City

Tue 23/9

20:20-14:50

1 stop24h 30m

£502

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 29/4

19:40-10:35

1 stop9h 55m

Belfast City

Wed 7/5

14:45-22:30

1 stop12h 45m

£502

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Sun 25/5

19:00-09:45

1 stop9h 45m

Belfast City

Sun 8/6

14:25-17:15

1 stop31h 50m

£504

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 29/4

21:55-15:20

1 stop12h 25m

Belfast City

Wed 7/5

06:50-22:30

1 stop20h 40m

£504

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 13/5

16:20-21:05

1 stop22h 45m

Belfast City

Tue 20/5

17:25-14:40

1 stop27h 15m

£506

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 50 results
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5

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 18 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 18 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
7,917 reviews
Check prices

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
7,917 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
1,329 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
1,269 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
7,917 reviews
Check prices

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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 British Airways, which is currently one of the cheapest options available, starting at £299. Delta flights start at £321 while deals on Aer Lingus start at £329 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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