Cheap flights from the United States to Belfast from £179

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Belfast departing on 16/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from the United States to Belfast

Recent return flight deals from the United States to Belfast

Enter your travel dates to find the best prices.
Multiple Airlines Logo
23:00 - 20:25
BOS
-
BFS
16h 25m
2 stops
Multiple Airlines Logo
07:00 - 21:45
BFS
-
BOS
43h 45m
2 stops
£463Multiple Airlines
Mon, 13 Apr - Wed, 29 Apr
Multiple Airlines Logo
18:20 - 23:00
JFK
-
BFS
23h 40m
1 stop
Multiple Airlines Logo
06:35 - 22:30
BFS
-
JFK
20h 55m
2 stops
£479Multiple Airlines
Thu, 16 Apr - Thu, 23 Apr
Multiple Airlines Logo
23:00 - 18:25
EWR
-
BFS
14h 25m
1 stop
Multiple Airlines Logo
07:35 - 21:00
BFS
-
EWR
42h 25m
2 stops
£483Multiple Airlines
Sun, 12 Apr - Tue, 28 Apr
Multiple Airlines Logo
18:20 - 15:30
JFK
-
BFS
16h 10m
1 stop
Multiple Airlines Logo
06:10 - 15:55
BFS
-
JFK
14h 45m
1 stop
£490Multiple Airlines
Thu, 30 Apr - Thu, 7 May
Multiple Airlines Logo
18:20 - 13:50
JFK
-
BFS
14h 30m
1 stop
Multiple Airlines Logo
06:00 - 15:55
BFS
-
JFK
14h 55m
1 stop
£491Multiple Airlines
Fri, 1 May - Sat, 9 May
Multiple Airlines Logo
18:20 - 09:55
JFK
-
BFS
10h 35m
1 stop
Multiple Airlines Logo
06:05 - 15:55
BFS
-
JFK
14h 50m
1 stop
£500Multiple Airlines
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
18:20 - 09:55
JFK
-
BFS
10h 35m
1 stop
Multiple Airlines Logo
06:05 - 15:55
BFS
-
JFK
14h 50m
1 stop
£502Multiple Airlines
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
18:20 - 23:00
JFK
-
BFS
23h 40m
1 stop
Multiple Airlines Logo
14:50 - 15:55
BFS
-
JFK
30h 05m
1 stop
£508Multiple Airlines
Thu, 16 Apr - Thu, 23 Apr
Multiple Airlines Logo
18:20 - 14:15
JFK
-
BFS
14h 55m
1 stop
Multiple Airlines Logo
20:15 - 15:55
BFS
-
JFK
24h 40m
1 stop
£510Multiple Airlines
Fri, 24 Apr - Wed, 29 Apr
Multiple Airlines Logo
17:15 - 00:05
EWR
-
BFS
25h 50m
2 stops
Multiple Airlines Logo
06:15 - 13:15
BFS
-
EWR
36h 00m
3 stops
£515Multiple Airlines
Mon, 13 Apr - Fri, 17 Apr

momondo Fare Finder

 
Customise your flight search to find flights from United States to Belfast Intl Airport 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, momondo users made 279,928 searches. Data last updated 20 March 2026.
Use the filters below to find and compare flights from the United States to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 13/4

23:00-20:25

2 stops16h 25m

Belfast Intl

Wed 29/4

07:00-21:45

2 stops43h 45m

£463

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Thu 16/4

18:20-23:00

1 stop23h 40m

Belfast Intl

Thu 23/4

06:35-22:30

2 stops20h 55m

£479

NewarkBelfast

EWR - BFS

EWRBFS

Newark

Sun 12/4

23:00-18:25

1 stop14h 25m

Belfast Intl

Tue 28/4

07:35-21:00

2 stops42h 25m

£483

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Thu 30/4

18:20-15:30

1 stop16h 10m

Belfast Intl

Thu 7/5

06:10-15:55

1 stop14h 45m

£490

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Fri 1/5

18:20-13:50

1 stop14h 30m

Belfast Intl

Sat 9/5

06:00-15:55

1 stop14h 55m

£491
Fastest return journey

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Fri 1/5

18:20-09:55

1 stop10h 35m

Belfast Intl

Fri 8/5

06:05-15:55

1 stop14h 50m

£500

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Fri 1/5

18:20-09:55

1 stop10h 35m

Belfast Intl

Fri 8/5

06:05-15:55

1 stop14h 50m

£502

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Thu 16/4

18:20-23:00

1 stop23h 40m

Belfast Intl

Thu 23/4

14:50-15:55

1 stop30h 05m

£508

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Fri 24/4

18:20-14:15

1 stop14h 55m

Belfast Intl

Wed 29/4

20:15-15:55

1 stop24h 40m

£510

NewarkBelfast

EWR - BFS

EWRBFS

Newark

Mon 13/4

17:15-00:05

2 stops25h 50m

Belfast Intl

Fri 17/4

06:15-13:15

3 stops36h 00m

£515

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from United States to Belfast Intl Airport

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

What is the cheapest month to fly to Belfast Intl Airport?

The month of November is, on average, the cheapest month to fly to Belfast Intl Airport from United States, with most prices found around £345. If you’re not able to fly to Belfast Intl Airport in November, then February is your next best option. Flight prices from United States to Belfast Intl Airport during February average around £458.

Cheap United States to Belfast Intl Airport flight deals and tips

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

Fastest flight time

9h 50m

Direct flights

None
The fastest flight from United States to Belfast Intl Airport takes 9h 50m
There are no direct flights from United States to Belfast Intl Airport. There are no popular flight routes from United States to Belfast Intl Airport.
  • When did momondo last update prices for flights from United States to Belfast Intl Airport?

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

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

    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 Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The required travel and health documents for your Belfast Intl Airport 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 Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Ballymena
Newry
Armagh
Cookstown
Portadown
Dungannon

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 provides multiple filters to help you find the best flight to Belfast from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Belfast from United States. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Sun 19/4
Sun 26/4

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