Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from the United States to Belfast from $178

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 9/10. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from the United States to Belfast

Recent round-trip flight deals from the United States to Belfast

Logo
6:20 pm - 9:55 amJFK-BFS
10h 35m1 stop
Logo
8:15 am - 3:55 pmBFS-JFK
12h 40m1 stop
$447
Find Deal
Mon, Sep 22 - Wed, Oct 8
Logo
6:05 pm - 10:05 amJFK-BFS
11h 00m1 stop
Logo
6:30 am - 3:55 pmBFS-JFK
14h 25m1 stop
$463
Find Deal
Wed, Nov 12 - Mon, Nov 17
Logo
6:05 pm - 10:05 amJFK-BFS
11h 00m1 stop
Logo
8:55 pm - 3:55 pmBFS-JFK
24h 00m1 stop
$471
Find Deal
Tue, Nov 11 - Mon, Nov 24
British Airways Logo
8:05 pm - 3:05 pmBOS-BHD
14h 00m1 stop
British Airways Logo
4:15 pm - 10:40 pmBHD-BOS
11h 25m1 stop
$519British Airways
Find Deal
Sat, Oct 4 - Sat, Oct 11
British Airways Logo
6:25 pm - 10:30 amJFK-BHD
11h 05m1 stop
British Airways Logo
10:00 am - 4:00 pmBHD-JFK
11h 00m1 stop
$522British Airways
Find Deal
Tue, Dec 9 - Tue, Feb 24
American Airlines Logo
8:05 pm - 11:55 amBOS-BHD
10h 50m1 stop
American Airlines Logo
10:00 am - 10:45 pmBHD-BOS
17h 45m1 stop
$537American Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 10
American Airlines Logo
8:10 pm - 12:55 pmBOS-BHD
11h 45m1 stop
American Airlines Logo
11:00 am - 11:15 amBHD-BOS
29h 15m1 stop
$545American Airlines
Find Deal
Mon, Sep 1 - Sun, Sep 14
Delta Logo
6:45 pm - 9:15 pmBOS-BHD
21h 30m1 stop
Delta Logo
5:20 pm - 2:20 pmBHD-BOS
25h 00m1 stop
$558Delta
Find Deal
Tue, Oct 21 - Thu, Oct 30
Delta Logo
6:10 pm - 4:55 pmBOS-BHD
17h 45m2 stops
Delta Logo
6:30 am - 7:55 pmBHD-BOS
17h 25m1 stop
$562Delta
Find Deal
Tue, Oct 21 - Mon, Oct 27
KLM Logo
6:50 pm - 9:00 pmJFK-BHD
21h 10m1 stop
KLM Logo
5:20 pm - 11:35 amBHD-JFK
23h 15m1 stop
$608KLM
Find Deal
Sun, Dec 14 - Tue, Jan 6

British Airways flights from United States to Belfast

Our best British Airways deals on United States to Belfast flight tickets
British Airways
Oct 4
BOS8:05 pmBoston Logan Intl
14h 00m
1 stop
BHD3:05 pmBelfast City
Oct 11
BHD4:15 pmBelfast City
11h 25m
1 stop
BOS10:40 pmBoston Logan Intl
$519
Find similar
British Airways
Dec 9
JFK6:25 pmNew York John F Kennedy Intl
11h 05m
1 stop
BHD10:30 amBelfast City
Feb 24
BHD10:00 amBelfast City
11h 00m
1 stop
JFK4:00 pmNew York John F Kennedy Intl
$522
Find similar
British Airways
Sep 3
JFK7:30 pmNew York John F Kennedy Intl
11h 25m
1 stop
BHD11:55 amBelfast City
Sep 10
BHD4:05 pmBelfast City
10h 55m
1 stop
JFK10:00 pmNew York John F Kennedy Intl
$528
Find similar

American Airlines flights from United States to Belfast

Our best American Airlines deals on United States to Belfast flight tickets
American Airlines
Sep 3
BOS8:05 pmBoston Logan Intl
10h 50m
1 stop
BHD11:55 amBelfast City
Sep 10
BHD10:00 amBelfast City
17h 45m
1 stop
BOS10:45 pmBoston Logan Intl
$537
Find similar
American Airlines
Sep 1
BOS8:10 pmBoston Logan Intl
11h 45m
1 stop
BHD12:55 pmBelfast City
Sep 14
BHD11:00 amBelfast City
29h 15m
1 stop
BOS11:15 amBoston Logan Intl
$545
Find similar
American Airlines
Sep 17
BOS7:40 pmBoston Logan Intl
12h 50m
1 stop
BHD1:30 pmBelfast City
Sep 24
BHD11:30 amBelfast City
28h 45m
1 stop
BOS11:15 amBoston Logan Intl
$570
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States to Belfast 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 832,500 searches. Data last updated August 5, 2025.
Use the filters below to find and compare flights from the United States to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Mon 9/22

6:20 pm-9:55 am

1 stop10h 35m

Belfast Intl

Wed 10/8

8:15 am-3:55 pm

1 stop12h 40m

$447

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Wed 11/12

6:05 pm-10:05 am

1 stop11h 00m

Belfast Intl

Mon 11/17

6:30 am-3:55 pm

1 stop14h 25m

$463

New YorkBelfast

JFK - BFS

JFKBFS

New York John F Kennedy Intl

Tue 11/11

6:05 pm-10:05 am

1 stop11h 00m

Belfast Intl

Mon 11/24

8:55 pm-3:55 pm

1 stop24h 00m

$471

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sat 10/4

8:05 pm-3:05 pm

1 stop14h 00m

Belfast City

Sat 10/11

4:15 pm-10:40 pm

1 stop11h 25m

$519

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Tue 12/9

6:25 pm-10:30 am

1 stop11h 05m

Belfast City

Tue 2/24

10:00 am-4:00 pm

1 stop11h 00m

$522

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 9/3

8:05 pm-11:55 am

1 stop10h 50m

Belfast City

Wed 9/10

10:00 am-10:45 pm

1 stop17h 45m

$537

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 9/1

8:10 pm-12:55 pm

1 stop11h 45m

Belfast City

Sun 9/14

11:00 am-11:15 am

1 stop29h 15m

$545

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 10/21

6:45 pm-9:15 pm

1 stop21h 30m

Belfast City

Thu 10/30

5:20 pm-2:20 pm

1 stop25h 00m

$558

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 10/21

6:10 pm-4:55 pm

2 stops17h 45m

Belfast City

Mon 10/27

6:30 am-7:55 pm

1 stop17h 25m

$562

New YorkBelfast

JFK - BHD

JFKBHD

New York John F Kennedy Intl

Sun 12/14

6:50 pm-9:00 pm

1 stop21h 10m

Belfast City

Tue 1/6

5:20 pm-11:35 am

1 stop23h 15m

$608

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Belfast from

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

What is the cheapest month to fly to Belfast?

In general, June is the cheapest month to fly from United States to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $670. If you don’t want to visit Belfast in June, then you should wait until December to fly from United States, when ticket prices are also cheap, with an average price of $709.

What is the cheapest day to depart on your flight to Belfast?

The cheapest day to depart from United States to Belfast is on a Monday when prices can be found for as low as $654. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from United States to Belfast for around $845.

What is the cheapest time of day to depart on your flight to Belfast?

Our data shows that the cheapest United States to Belfast flights are usually those with departure times in the afternoon. Our users have found flights to Belfast in the afternoon for as low as $660. Try not to purchase tickets in the morning because they tend to be around $916. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

$178

Fastest flight time

9h 35m

Direct flights

None

Airports in Belfast

2 airports
The best one-way flight to Belfast from United States in the past 72 hours is $178. The best round-trip flight deal from United States to Belfast found on momondo in the last 72 hours is $447.
The fastest flight from United States to Belfast takes 9h 35m
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 refresh daily.

  • How many operators does momondo search for flights from United States to Belfast?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

Best airlines flying from United States to Belfast

Compare and see reviews for airlines that fly from United States to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $565Free CancellationRating
6.6
7,237 reviews
Search British Airways flights
American AirlinesPriceFrom $586Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

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?

If you are not ready to book a flight from United States to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.

An easier way to manage your Belfast trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 8/10
Sun 8/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport