What is the cheapest airline that flies from United States to Northern Ireland?

Aer Lingus and KLM are the most popular carriers operating from United States to Northern Ireland

How long is the flight from United States to Northern Ireland?

The average flight duration from United States to Northern Ireland depends on which airport you fly into and out of. Flying from New York to Belfast Intl Airport is 10h 35m on average, while flying from Boston to Belfast Intl Airport is 12h 20m on average. Belfast Intl Airport is the most popular airport in Northern Ireland.

When did momondo last update prices for flights from United States to Northern Ireland?

Prices for flights from United States to Northern Ireland were last updated today.

How old do you have to be to fly from United States to Northern Ireland?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The travel and health documents you'll need for your trip to Northern Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Northern Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£193 Cheap Flights from the United States to Northern Ireland in 2026

Find the cheapest flights from the United States to Northern Ireland

Return

One-way

Last minute

Recent return flight deals from the United States to Northern Ireland

Enter your travel dates to find the best prices.

19:05 - 12:20BOS Boston Logan Intl-BFS Belfast Intl

12h 15m1 stop London Heathrow

08:50 - 21:05BFS Belfast Intl-BOS Boston Logan Intl

41h 15m2 stops London Stansted Barcelona-El Prat

£471Multiple Airlines

Sun, 4 Oct - Tue, 20 Oct

23:00 - 10:40EWR Newark-BFS Belfast Intl

30h 40m1 stop Paris Orly

22:05 - 21:00BFS Belfast Intl-EWR Newark

50h 55m2 stops Manchester Paris Beauvais-Tille

£493Multiple Airlines

Mon, 12 Oct - Mon, 26 Oct

23:00 - 18:25EWR Newark-BFS Belfast Intl

14h 25m1 stop Paris Orly

22:05 - 21:00BFS Belfast Intl-EWR Newark

26h 55m2 stops Manchester Paris Beauvais-Tille

£494Multiple Airlines

Sun, 11 Oct - Mon, 26 Oct

23:00 - 18:25EWR Newark-BFS Belfast Intl

14h 25m1 stop Paris Orly

07:35 - 21:00BFS Belfast Intl-EWR Newark

42h 25m2 stops Manchester Paris Beauvais-Tille

£497Multiple Airlines

Sun, 4 Oct - Tue, 20 Oct

23:00 - 18:25EWR Newark-BFS Belfast Intl

14h 25m1 stop Paris Orly

22:05 - 21:00BFS Belfast Intl-EWR Newark

26h 55m2 stops Manchester Paris Beauvais-Tille

£505Multiple Airlines

Sun, 11 Oct - Mon, 26 Oct

20:30 - 19:40JFK New York John F Kennedy Intl-BFS Belfast Intl

18h 10m2 stops Reykjavik Keflavik Intl Glasgow Intl

07:15 - 22:05BFS Belfast Intl-JFK New York John F Kennedy Intl

19h 50m2 stops Glasgow Intl Reykjavik Keflavik Intl

£511Multiple Airlines

Tue, 29 Sep - Tue, 6 Oct

23:00 - 18:25EWR Newark-BFS Belfast Intl

14h 25m1 stop Paris Orly

20:45 - 21:00BFS Belfast Intl-EWR Newark

28h 15m1 stop Paris Charles de Gaulle

£513Multiple Airlines

Sun, 11 Oct - Mon, 26 Oct

23:00 - 18:25EWR Newark-BFS Belfast Intl

14h 25m1 stop Paris Orly

20:45 - 21:00BFS Belfast Intl-EWR Newark

28h 15m1 stop Paris Charles de Gaulle

£518Multiple Airlines

Sun, 11 Oct - Mon, 26 Oct

19:35 - 20:10EWR Newark-BFS Belfast Intl

19h 35m3 stops Reykjavik Keflavik Intl Dublin London Stansted

16:50 - 18:25BFS Belfast Intl-EWR Newark

30h 35m3 stops London Luton Gdansk Rebiechowo Reykjavik Keflavik Intl

£531Multiple Airlines

Mon, 23 Nov - Sun, 29 Nov

22:55 - 21:00BOS Boston Logan Intl-BFS Belfast Intl

17h 05m2 stops Barcelona-El Prat London Luton

10:15 - 21:05BFS Belfast Intl-BOS Boston Logan Intl

15h 50m1 stop Barcelona-El Prat

£533Multiple Airlines

Thu, 15 Oct - Thu, 22 Oct

Recent last minute flight deals from the United States to Northern Ireland

Enter your travel dates to find the best prices.

23:00 - 21:30BOS Boston Logan Intl-BFS Belfast Intl

17h 30m2 stops Reykjavik Keflavik Intl Edinburgh Turnhouse

20:15 - 20:20BFS Belfast Intl-BOS Boston Logan Intl

29h 05m3 stops London Stansted Barcelona-El Prat Lisbon Humberto Delgado

£792Multiple Airlines

Sat, 5 Sep - Tue, 15 Sep

12:14 - 15:40HOU Houston Hobby-BHD Belfast City

21h 26m2 stops Dallas/Fort Worth London Heathrow

06:30 - 23:50BHD Belfast City-HOU Houston Hobby

23h 20m2 stops London Heathrow Dallas/Fort Worth

£828British Airways

Wed, 2 Sep - Thu, 10 Sep

23:00 - 21:30BOS Boston Logan Intl-BFS Belfast Intl

17h 30m2 stops Reykjavik Keflavik Intl Edinburgh Turnhouse

17:10 - 14:45BFS Belfast Intl-BOS Boston Logan Intl

26h 35m2 stops Malaga Lisbon Humberto Delgado

£866Multiple Airlines

Sat, 5 Sep - Tue, 15 Sep

20:30 - 23:25JFK New York John F Kennedy Intl-BFS Belfast Intl

21h 55m2 stops Zurich London Heathrow

20:15 - 15:55BFS Belfast Intl-JFK New York John F Kennedy Intl

24h 40m1 stop London Luton

£892Multiple Airlines

Thu, 3 Sep - Mon, 7 Sep

18:20 - 09:55JFK New York John F Kennedy Intl-BFS Belfast Intl

10h 35m1 stop London Gatwick

20:55 - 15:55BFS Belfast Intl-JFK New York John F Kennedy Intl

24h 00m1 stop London Gatwick

£940Multiple Airlines

Thu, 3 Sep - Mon, 7 Sep

17:35 - 14:55EWR Newark-BHD Belfast City

16h 20m2 stops Dublin Glasgow Intl

07:00 - 16:05BHD Belfast City-EWR Newark

14h 05m2 stops Edinburgh Turnhouse Dublin

£967Aer Lingus

Sun, 6 Sep - Sat, 12 Sep

17:35 - 14:55EWR Newark-BHD Belfast City

16h 20m2 stops Dublin Glasgow Intl

07:00 - 16:05BHD Belfast City-EWR Newark

14h 05m2 stops Edinburgh Turnhouse Dublin

£969Aer Lingus

Sun, 6 Sep - Sat, 12 Sep

17:35 - 11:55EWR Newark-BHD Belfast City

13h 20m2 stops Dublin Glasgow Intl

07:05 - 13:55BHD Belfast City-EWR Newark

11h 50m1 stop London Heathrow

£1,085Aer Lingus

Sun, 6 Sep - Sat, 12 Sep

19:10 - 20:45SEA Seattle/Tacoma Intl-BFS Belfast Intl

17h 35m2 stops Dublin Edinburgh Turnhouse

21:25 - 17:10BFS Belfast Intl-SEA Seattle/Tacoma Intl

27h 45m2 stops Edinburgh Turnhouse Dublin

£1,086Multiple Airlines

Fri, 4 Sep - Mon, 7 Sep

17:35 - 11:55EWR Newark-BHD Belfast City

13h 20m2 stops Dublin Glasgow Intl

07:05 - 13:55BHD Belfast City-EWR Newark

11h 50m1 stop London Heathrow

£1,089Multiple Airlines

Sun, 6 Sep - Sat, 12 Sep

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British Airways flights from United States to Northern Ireland

Our best British Airways deals on United States to Northern Ireland flight tickets

British Airways

4 Oct

EWR17:50Newark

11h 40m

1 stop

BHD10:30Belfast City

20 Oct

BHD13:45Belfast City

10h 40m

1 stop

EWR19:25Newark

£723

British Airways

29 Sept

EWR17:50Newark

10h 10m

1 stop

BHD09:00Belfast City

6 Oct

BHD06:30Belfast City

12h 25m

1 stop

EWR13:55Newark

£728

British Airways

11 Oct

EWR17:50Newark

11h 40m

1 stop

BHD10:30Belfast City

26 Oct

BHD19:40Belfast City

28h 55m

1 stop

EWR20:35Newark

£730

Aer Lingus flights from United States to Northern Ireland

Our best Aer Lingus deals on United States to Northern Ireland flight tickets

Aer Lingus

9 Oct

EWR17:35Newark

13h 20m

2 stops

BHD11:55Belfast City

25 Oct

BHD18:35Belfast City

26h 35m

2 stops

EWR17:10Newark

£814

Aer Lingus

11 Oct

EWR17:35Newark

16h 20m

2 stops

BHD14:55Belfast City

26 Oct

BHD19:40Belfast City

28h 55m

1 stop

EWR20:35Newark

£816

Aer Lingus

21 Sept

EWR17:35Newark

13h 20m

2 stops

BHD11:55Belfast City

28 Sept

BHD18:20Belfast City

26h 45m

2 stops

EWR16:05Newark

£848

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Sun 4/10

19:05-12:20

1 stop12h 15m

Belfast Intl

Tue 20/10

08:50-21:05

2 stops41h 15m

£471

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Mon 12/10

23:00-10:40

1 stop30h 40m

Belfast Intl

Mon 26/10

22:05-21:00

2 stops50h 55m

£493

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Sun 11/10

23:00-18:25

1 stop14h 25m

Belfast Intl

Mon 26/10

22:05-21:00

2 stops26h 55m

£494

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Sun 4/10

23:00-18:25

1 stop14h 25m

Belfast Intl

Tue 20/10

07:35-21:00

2 stops42h 25m

£497

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Sun 11/10

23:00-18:25

1 stop14h 25m

Belfast Intl

Mon 26/10

22:05-21:00

2 stops26h 55m

£505

New YorkBelfast

JFK New York John F Kennedy Intl - BFS Belfast Intl

JFKBFS

New York John F Kennedy Intl

Tue 29/9

20:30-19:40

2 stops18h 10m

Belfast Intl

Tue 6/10

07:15-22:05

2 stops19h 50m

£511

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Sun 11/10

23:00-18:25

1 stop14h 25m

Belfast Intl

Mon 26/10

20:45-21:00

1 stop28h 15m

£513

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Sun 11/10

23:00-18:25

1 stop14h 25m

Belfast Intl

Mon 26/10

20:45-21:00

1 stop28h 15m

£518

NewarkBelfast

EWR Newark - BFS Belfast Intl

EWRBFS

Newark

Mon 23/11

19:35-20:10

3 stops19h 35m

Belfast Intl

Sun 29/11

16:50-18:25

3 stops30h 35m

£531

Fastest return journey

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Thu 15/10

22:55-21:00

2 stops17h 05m

Belfast Intl

Thu 22/10

10:15-21:05

1 stop15h 50m

£533

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United States to Northern Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Northern Ireland?

In general, January is the cheapest month to fly from United States to Northern Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £446. If you’re not able to fly to Northern Ireland in January, then March is your next best option. Flight prices from United States to Northern Ireland during March average around £495.

Can stopping save me money on United States to Northern Ireland flights?

You could potentially save up to 8% on your flight if you consider stops on a United States to Northern Ireland flight.

Cheap United States to Northern Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Northern Ireland

Best price found	£193
Fastest flight time	10h 00m
Direct flights	None

The best one-way flight to Northern Ireland from United States in the past 72 hours is £193. The best return flight deal from United States to Northern Ireland found on momondo in the last 72 hours is £471.

The fastest flight from United States to Northern Ireland takes 10h 00m

There are no direct flights from United States to Northern Ireland. There are no popular flight routes from United States to Northern Ireland.

Search flight deals

Frequently asked questions about flying from the United States to Northern Ireland

When did momondo last update prices for flights from United States to Northern Ireland?
Prices for flights from United States to Northern Ireland were last updated today.
How old do you have to be to fly from United States to Northern Ireland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The travel and health documents you'll need for your trip to Northern Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Northern Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from United States to Northern Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United States to Northern Ireland for you.

Can I find flights from United States to Northern Ireland with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Northern Ireland from United States with this policy.

How can momondo help me find flights from United States to Northern Ireland?

Once you have performed a search for United States to Northern Ireland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from United States to Northern Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Northern Ireland from United States are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.