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Cheap flights from Boston to Northern Ireland from £223

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BFS
28 Jul — 4 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Northern Ireland
Explore the most affordable flight options available from Boston to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 June 2026.

Mon 7/923:00
BOS
-
BFS
2 stops19h 10m
Multiple Airlines
Sun 13/912:20
BFS
-
BOS
2 stops35h 30m
Multiple Airlines
Deal found 26/6£563
Sat 3/1020:50
BOS
-
BFS
2 stops20h 50m
Multiple Airlines
Sat 17/1020:15
BFS
-
BOS
2 stops23h 40m
Multiple Airlines
Deal found 24/6£578
Wed 7/1020:50
BOS
-
BFS
2 stops18h 35m
Multiple Airlines
Wed 21/1009:35
BFS
-
BOS
2 stops34h 10m
Multiple Airlines
Deal found 26/6£594
Tue 1/920:50
BOS
-
BFS
2 stops21h 20m
Multiple Airlines
Fri 11/907:35
BFS
-
BOS
2 stops16h 15m
Multiple Airlines
Deal found 27/6£595
Thu 24/920:50
BOS
-
BFS
2 stops21h 10m
Multiple Airlines
Mon 28/915:50
BFS
-
BOS
2 stops32h 00m
Multiple Airlines
Deal found 23/6£595
Fri 2/1023:00
BOS
-
BFS
2 stops19h 20m
Multiple Airlines
Thu 15/1020:40
BFS
-
BOS
2 stops24h 00m
Multiple Airlines
Deal found 26/6£600
Mon 7/920:50
BOS
-
BHD
2 stops18h 40m
Multiple Airlines
Sun 13/915:10
BHD
-
BOS
2 stops32h 40m
Multiple Airlines
Deal found 26/6£603
Sat 10/1020:50
BOS
-
BFS
2 stops17h 40m
Multiple Airlines
Thu 22/1010:15
BFS
-
BOS
1 stop15h 50m
Multiple Airlines
Deal found 26/6£607
Wed 7/1020:50
BOS
-
BHD
2 stops17h 50m
Multiple Airlines
Wed 21/1007:00
BHD
-
BOS
2 stops19h 45m
Multiple Airlines
Deal found 26/6£621
Tue 1/920:50
BOS
-
BHD
2 stops16h 00m
Multiple Airlines
Fri 11/907:00
BHD
-
BOS
2 stops16h 50m
Multiple Airlines
Deal found 27/6£626
Wed 7/1019:35
BOS
-
BHD
1 stop13h 00m
British Airways
Wed 21/1010:05
BHD
-
BOS
1 stop11h 55m
British Airways
Deal found 26/6£651
Wed 25/1119:50
BOS
-
BHD
2 stops14h 40m
Multiple Airlines
Mon 30/1107:40
BHD
-
BOS
3 stops36h 00m
Multiple Airlines
Deal found 27/6£651

Find flight deals from Boston to Northern Ireland

Keep the following information in mind while searching for Boston to Northern Ireland flight deals. Data was last updated 28 June 2026.

Round-trip from

£563

One-way from

£223

Popular in

November

Cheapest in

February

Average price

£732
7/9-13/9
  • 7/9-13/9
  • 4 total stops
  • 54h 40m total
  • Boston to Northern Ireland
Search Deals
25/9
  • 25/9
  • 2 total stops
  • 42h 40m total
  • Boston to Northern Ireland
Search Deals
Highest demand for flights based on searches. 40% potential increase in price (£361 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 16% potential price decrease (£76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Boston to Northern Ireland 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 28 June 2026.
Use the filters below to find and compare flights from Boston to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 3/10

20:50-22:40

2 stops20h 50m

Belfast Intl

Sat 17/10

20:15-14:55

2 stops23h 40m

£578

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 7/10

20:50-20:25

2 stops18h 35m

Belfast Intl

Wed 21/10

09:35-14:45

2 stops34h 10m

£594

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 1/9

20:50-23:10

2 stops21h 20m

Belfast Intl

Fri 11/9

07:35-18:50

2 stops16h 15m

£595

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Thu 24/9

20:50-23:00

2 stops21h 10m

Belfast Intl

Mon 28/9

15:50-18:50

2 stops32h 00m

£595

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 25/11

19:50-20:45

3 stops19h 55m

Belfast Intl

Mon 30/11

22:05-14:40

3 stops45h 35m

£600

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 6/10

20:50-19:20

2 stops17h 30m

Belfast Intl

Wed 21/10

09:35-21:05

1 stop16h 30m

£610

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 10/10

20:50-19:30

2 stops17h 40m

Belfast Intl

Sun 18/10

06:10-21:45

1 stop20h 35m

£617

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 5/10

23:00-23:20

2 stops19h 20m

Belfast Intl

Mon 19/10

10:30-20:20

1 stop14h 50m

£617

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 7/10

23:00-19:40

2 stops15h 40m

Belfast Intl

Sun 18/10

06:10-21:45

1 stop20h 35m

£630

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 4/9

12:30-13:40

3 stops20h 10m

Belfast City

Sat 5/9

17:10-20:20

3 stops32h 10m

£700

Flights are sorted by cheapest return flights first.

Deals found on 23/6

Showing 1-10 of 32 resultsSorted by cheapest first
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Best time to book a flight from Boston to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Boston with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Northern Ireland

What is the cheapest month to book a flight from Boston to Northern Ireland?

Currently, March is the cheapest month in which you can book a flight from Boston to Northern Ireland (average of £389). Flying from Boston to Northern Ireland in December is currently the most expensive (average of £751). 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.

Related info for your journey

Find useful and relevant information for your journey from Boston to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Northern Ireland?

    For a flight from Boston to Northern Ireland, you will be flying from Logan Intl. Boston Logan Intl (BOS) is just 2.6 mi from the center of the city.

  • How long is the flight from Boston to Northern Ireland?

    Airlines like British Airways and Delta fly from Boston to Northern Ireland in about 10h 05m. The time it takes to get you to your destination can typically vary by up to 1h 30m. The distance from Boston to Northern Ireland is about 2981 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Boston to Northern Ireland?

    When deciding which route to take from Boston to Northern Ireland consider Boston Logan Intl - Belfast Intl, Boston Logan Intl - Belfast City or Boston Logan Intl - Campbeltown Machrihanish as they are the most popular.

  • Can I find deals for flights from Boston to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Boston to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Boston to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Northern Ireland.

  • Can I find deals for business class flights from Boston to Northern Ireland?

    Yes. Cheapflights offers flight deals from Boston to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Northern Ireland?

    Currently, March is the cheapest month in which you can book a flight from Boston to Northern Ireland (average of £389). Flying from Boston to Northern Ireland in December is currently the most expensive (average of £751). 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.

See more FAQs

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Northern Ireland.

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