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

Aer Lingus is the most popular carrier operating from United States to Belfast

How long does it take to fly to Belfast?

Flight times from United States to Belfast vary, but if you’re flying out of Boston and flying into Belfast Intl Airport (one of the most popular routes), then the duration is 10h 05m on average. Another popular route from United States to Belfast is flying from New York to Belfast Intl Airport, which will take roughly 11h 05m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from United States to Belfast are updated daily.

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

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 Belfast.

What documentation or ID do you need to fly to Belfast?

The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£148 Cheap Flights from the United States to Belfast in 2025

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Find the cheapest flights from the United States to Belfast

Round-trip

One-way

Last minute

Recent return flight deals from the United States to Belfast

18:05 - 10:05JFK-BFS

11h 00m1 stop

06:30 - 15:55BFS-JFK

14h 25m1 stop

£348

Find Deal

Mi, 12 Nov - Mo, 17 Nov

18:05 - 10:05JFK-BFS

11h 00m1 stop

20:55 - 15:55BFS-JFK

24h 00m1 stop

£354

Find Deal

Di, 11 Nov - Mo, 24 Nov

18:20 - 20:20JFK-BFS

21h 00m1 stop

20:55 - 15:55BFS-JFK

24h 00m1 stop

£358

Find Deal

So, 21 Sep - Di, 30 Sep

20:05 - 15:05BOS-BHD

14h 00m1 stop

16:15 - 22:40BHD-BOS

11h 25m1 stop

£391British Airways

Find Deal

Sa, 4 Okt - Sa, 11 Okt

18:25 - 10:30JFK-BHD

11h 05m1 stop

10:00 - 16:00BHD-JFK

11h 00m1 stop

£393British Airways

Find Deal

Di, 9 Dez - Di, 24 Feb

20:05 - 11:55BOS-BHD

10h 50m1 stop

10:00 - 22:45BHD-BOS

17h 45m1 stop

£404American Airlines

Find Deal

Mi, 3 Sep - Mi, 10 Sep

20:10 - 12:55BOS-BHD

11h 45m1 stop

11:00 - 11:15BHD-BOS

29h 15m1 stop

£410American Airlines

Find Deal

Mo, 1 Sep - So, 14 Sep

16:50 - 21:15BOS-BHD

23h 25m1 stop

06:30 - 16:00BHD-BOS

14h 30m2 stops

£426Delta

Find Deal

Mo, 1 Sep - So, 14 Sep

14:19 - 16:55JFK-BHD

21h 36m2 stops

06:30 - 19:35BHD-JFK

18h 05m2 stops

£430Delta

Find Deal

Mi, 3 Sep - Mi, 10 Sep

12:30 - 16:55ROC-BHD

23h 25m2 stops

06:30 - 22:47BHD-ROC

21h 17m2 stops

£629Virgin Atlantic

Find Deal

Fr, 17 Okt - Di, 21 Okt

British Airways flights from United States to Belfast

Our best British Airways deals on United States to Belfast flight tickets

British Airways

4 Oct

BOS20:05Boston Logan Intl

14h 00m

1 stop

BHD15:05Belfast City

11 Oct

BHD16:15Belfast City

11h 25m

1 stop

BOS22:40Boston Logan Intl

£391

Find similar

British Airways

9 Dec

JFK18:25New York John F Kennedy Intl

11h 05m

1 stop

BHD10:30Belfast City

24 Feb

BHD10:00Belfast City

11h 00m

1 stop

JFK16:00New York John F Kennedy Intl

£393

Find similar

British Airways

3 Sept

JFK19:30New York John F Kennedy Intl

11h 25m

1 stop

BHD11:55Belfast City

10 Sept

BHD16:05Belfast City

10h 55m

1 stop

JFK22:00New York John F Kennedy Intl

£397

Find similar

American Airlines flights from United States to Belfast

Our best American Airlines deals on United States to Belfast flight tickets

American Airlines

3 Sept

BOS20:05Boston Logan Intl

10h 50m

1 stop

BHD11:55Belfast City

10 Sept

BHD10:00Belfast City

17h 45m

1 stop

BOS22:45Boston Logan Intl

£404

Find similar

American Airlines

1 Sept

BOS20:10Boston Logan Intl

11h 45m

1 stop

BHD12:55Belfast City

14 Sept

BHD11:00Belfast City

29h 15m

1 stop

BOS11:15Boston Logan Intl

£410

Find similar

American Airlines

17 Sept

BOS19:40Boston Logan Intl

12h 50m

1 stop

BHD13:30Belfast City

24 Sept

BHD11:30Belfast City

28h 45m

1 stop

BOS11:15Boston Logan Intl

£429

Find similar

Fly from

Fly to

Route

Depart

Return

Price

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Mi 12/11

18:05-10:05

1 stop11h 00m

Belfast Intl

Mo 17/11

06:30-15:55

1 stop14h 25m

£348

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Di 11/11

18:05-10:05

1 stop11h 00m

Belfast Intl

Mo 24/11

20:55-15:55

1 stop24h 00m

£354

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

So 21/9

18:20-20:20

1 stop21h 00m

Belfast Intl

Di 30/9

20:55-15:55

1 stop24h 00m

£358

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sa 4/10

20:05-15:05

1 stop14h 00m

Belfast City

Sa 11/10

16:15-22:40

1 stop11h 25m

£391

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Di 9/12

18:25-10:30

1 stop11h 05m

Belfast City

Di 24/2

10:00-16:00

1 stop11h 00m

£393

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mi 3/9

20:05-11:55

1 stop10h 50m

Belfast City

Mi 10/9

10:00-22:45

1 stop17h 45m

£404

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mo 1/9

20:10-12:55

1 stop11h 45m

Belfast City

So 14/9

11:00-11:15

1 stop29h 15m

£410

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mo 1/9

16:50-21:15

1 stop23h 25m

Belfast City

So 14/9

06:30-16:00

2 stops14h 30m

£426

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Mi 3/9

14:19-16:55

2 stops21h 36m

Belfast City

Mi 10/9

06:30-19:35

2 stops18h 05m

£430

RochesterBelfast

ROC - BHD

ROCBHD

Rochester Greater Rochester Intl

Fr 17/10

12:30-16:55

2 stops23h 25m

Belfast City

Di 21/10

06:30-22:47

2 stops21h 17m

£629

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 Belfast

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 Belfast?

The cheapest month to fly to Belfast from United States is in June. Flight prices, which tend to average around £504, are often lower during this time because this is during the off-season. If you aren’t able to travel to Belfast during the month of June, then flying in December is also cheap. Prices for this month can be found on momondo for an average of £534.

Cheap United States to Belfast flight deals and tips

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

Best price found	£148
Fastest flight time	9h 40m
Direct flights	None
Airports in Belfast	2 airports

The best one-way flight to Belfast from United States in the past 72 hours is £148. The best return flight deal from United States to Belfast found on momondo in the last 72 hours is £348.

The fastest flight from United States to Belfast takes 9h 40m

There are no direct flights from United States to Belfast. Popular non-direct routes for this connection are New York John F Kennedy Intl Airport - Belfast City Airport, New York John F Kennedy Intl Airport - Belfast Intl Airport and Boston Logan Intl Airport - Belfast Intl Airport.

There are 2 airports near Belfast: Belfast Intl (BFS), Belfast City (BHD)

Search flight deals

When did momondo last update prices for flights from United States to Belfast?
Prices for flights from United States to Belfast are updated daily.
How old do you have to be to fly from United States to Belfast?
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 Belfast.
What documentation or ID do you need to fly to Belfast?
The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from United States.

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

Yes. All flights to Belfast from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from United States to Belfast.

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

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from United States and alert you when they change.