Cheap flights from the United States to Belfast Intl Airport from £145
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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from USA to Belfast Intl
Keep the following information in mind while searching for USA to Belfast Intl flight deals. Data was last updated 13 June 2025.
Find flight deals from USA to Belfast Intl
Cheapest flights from USA to Belfast IntlExplore the most affordable flight options available from USA to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.
Explore the most affordable flight options available from USA to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from USA to Belfast Intl 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 13 June 2025.
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
New YorkBelfast
JFK - BFS
JFKBFS
New York John F Kennedy Intl
Tue 16/9
18:20-09:55
1 stop10h 35m
Belfast Intl
Mon 22/9
20:55-15:55
1 stop24h 00m
BostonBelfast
BOS - BFS
BOSBFS
Boston Logan Intl
Mon 28/7
07:25-07:50
2 stops19h 25m
Belfast Intl
Mon 4/8
17:05-20:10
2 stops32h 05m
NewarkBelfast
EWR - BFS
EWRBFS
Newark
Sun 27/7
20:25-21:30
2 stops20h 05m
Belfast Intl
Sun 3/8
06:50-19:10
2 stops17h 20m
New YorkBelfast
LGA - BFS
LGABFS
New York LaGuardia
Sun 21/9
06:00-20:20
2 stops33h 20m
Belfast Intl
Sun 28/9
18:40-22:05
2 stops32h 25m
BaltimoreBelfast
BWI - BFS
BWIBFS
Baltimore/Washington
Wed 8/10
18:50-23:10
2 stops23h 20m
Belfast Intl
Sun 12/10
07:00-17:40
2 stops15h 40m
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Sun 27/7
19:25-21:30
2 stops20h 05m
Belfast Intl
Sun 3/8
06:50-21:15
2 stops20h 25m
Washington, D.C.Belfast
IAD - BFS
IADBFS
Washington, D.C. Dulles Intl
Wed 23/7
23:15-22:15
2 stops18h 00m
Belfast Intl
Sun 27/7
06:45-21:04
3 stops43h 19m
St. LouisBelfast
STL - BFS
STLBFS
Lambert-St Louis
Sun 27/7
10:47-20:20
3 stops27h 33m
Belfast Intl
Sun 3/8
22:55-19:45
2 stops26h 50m
New YorkBelfast
JFK - BFS
JFKBFS
New York John F Kennedy Intl
Sun 20/7
18:20-07:40
1 stop32h 20m
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Sun 27/7
22:15-21:30
2 stops17h 15m
Best time to book a flight from USA to Belfast Intl
Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from USA with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from the United States to Belfast Intl Airport
What is the cheapest month to book a flight from USA to Belfast Intl Airport?
Currently, January is the cheapest month in which you can book a flight from USA to Belfast Intl Airport (average of £67). Flying from USA to Belfast Intl Airport 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 BFS?
Find hourly flight availability from USA to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.
When flying from USA to Belfast Intl Airport, 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 Belfast Intl by month
Plan your trip to Belfast Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Belfast Intl Airport 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 Belfast Intl Airport when rainfall is around 50.0 mm.
Temperature in Belfast Intl by month
Plan your trip to Belfast Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Belfast Intl Airport, 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).
Related info for your journey
Find useful and relevant information for your journey from USA to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for USA to Belfast Intl
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How does Cheapflights help users find flights from USA to Belfast Intl?
Cheapflights makes it easy to find USA to Belfast Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from USA to Belfast Intl?
Millions of users choose and trust Cheapflights to book the best flight deals from USA to Belfast Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from USA to Belfast Intl with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from USA to Belfast Intl, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from USA to Belfast Intl become cheaper?
Of course! You can now track prices for flights from USA to Belfast Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.