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Cheap flights from Massachusetts to Belfast Intl Airport from £248

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 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BFS
22 Jun — 29 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Massachusetts to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Massachusetts to Belfast Intl
Explore the most affordable flight options available from Massachusetts to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 May 2026.

Sun 12/705:45
BOS
-
BFS
3 stops31h 40m
Multiple Airlines
Tue 28/720:15
BFS
-
BOS
2 stops23h 40m
Multiple Airlines
Deal found 22/5£607
Mon 17/820:50
BOS
-
BFS
3 stops21h 30m
Multiple Airlines
Sun 23/821:05
BFS
-
BOS
2 stops22h 50m
Multiple Airlines
Deal found 20/5£634
Fri 5/605:50
BOS
-
BFS
3 stops29h 40m
Multiple Airlines
Thu 11/606:40
BFS
-
BOS
3 stops19h 15m
Multiple Airlines
Deal found 19/5£649
Sun 5/715:35
BOS
-
BFS
3 stops21h 50m
Multiple Airlines
Sun 12/721:25
BFS
-
BOS
2 stops26h 25m
Multiple Airlines
Deal found 21/5£658
Mon 13/716:55
BOS
-
BFS
2 stops23h 40m
Multiple Airlines
Thu 16/706:40
BFS
-
BOS
3 stops19h 15m
Multiple Airlines
Deal found 19/5£662
Tue 13/1020:50
BOS
-
BFS
2 stops13h 25m
Multiple Airlines
Wed 11/1107:40
BFS
-
BOS
3 stops41h 15m
Multiple Airlines
Deal found 22/5£666
Thu 2/710:47
BDL
-
BFS
3 stops27h 33m
Multiple Airlines
Mon 6/713:55
BFS
-
BDL
2 stops31h 35m
Multiple Airlines
Deal found 22/5£1,246
Sun 31/518:00
BDL
-
BFS
2 stops22h 30m
Multiple Airlines
Fri 12/608:55
BFS
-
BDL
2 stops12h 35m
Multiple Airlines
Deal found 19/5£1,631

Find flight deals from Massachusetts to Belfast Intl

Keep the following information in mind while searching for Massachusetts to Belfast Intl flight deals. Data was last updated 23 May 2026.

Round-trip from

£607

One-way from

£248

Popular in

November

Cheapest in

February

Average price

£616
12/7-28/7
  • 12/7-28/7
  • 5 total stops
  • 55h 20m total
  • Massachusetts to Belfast
Search Deals
18/6
  • 18/6
  • 3 total stops
  • 44h 55m total
  • Massachusetts to Belfast
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£213 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£35 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Massachusetts 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 23 May 2026.
Use the filters below to find and compare flights from Massachusetts 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 17/8

20:50-23:20

2 stops21h 30m

Belfast Intl

Sun 23/8

22:10-14:55

2 stops21h 45m

£636

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 13/7

15:35-21:35

3 stops25h 00m

Belfast Intl

Thu 16/7

06:40-20:55

3 stops19h 15m

£669

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/6

10:05-21:50

2 stops30h 45m

Belfast Intl

Thu 11/6

06:40-20:55

3 stops19h 15m

£671
Fastest return journey

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 2/9

23:00-19:40

2 stops15h 40m

Belfast Intl

Wed 9/9

09:35-21:05

1 stop16h 30m

£672

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 13/10

06:00-15:15

2 stops28h 15m

Belfast Intl

Wed 11/11

06:00-17:50

2 stops16h 50m

£672

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 21/8

10:05-21:50

2 stops30h 45m

Belfast Intl

Wed 26/8

07:30-20:20

3 stops41h 50m

£685

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 8/7

05:45-19:15

3 stops32h 30m

Belfast Intl

Mon 13/7

06:40-19:15

2 stops17h 35m

£700

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/6

05:50-16:30

3 stops29h 40m

Belfast Intl

Sat 6/6

22:25-20:55

3 stops27h 30m

£705

HartfordBelfast

BDL - BFS

BDLBFS

Hartford Bradley Intl

Thu 2/7

10:47-19:20

3 stops27h 33m

Belfast Intl

Mon 6/7

13:55-16:30

2 stops31h 35m

£1,246
Cheapest one-way

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 22/7

20:10-18:55

2 stops41h 45m

£258

Flights are sorted by cheapest return flights first.

Deals found on 18/5

Showing 1-10 of 16 resultsSorted by cheapest first
1
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Best time to book a flight from Massachusetts to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Massachusetts 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 Massachusetts to Belfast Intl Airport

What is the cheapest month to book a flight from Massachusetts to Belfast Intl Airport?

Currently, March is the cheapest month in which you can book a flight from Massachusetts to Belfast Intl Airport (average of £382). Flying from Massachusetts to Belfast Intl Airport in December is currently the most expensive (average of £738). 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.

How much does it cost for a return flight from Massachusetts to Belfast Intl Airport?

Related info for your journey

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

  • Can I find deals for flights from Massachusetts to Belfast Intl that include hotel bookings?

    Yes. In addition to deals on Massachusetts to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to Belfast Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Massachusetts to Belfast Intl.

  • Can I find deals for business class flights from Massachusetts to Belfast Intl?

    Yes. Cheapflights offers flight deals from Massachusetts to Belfast Intl 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 Massachusetts to Belfast Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Massachusetts to Belfast Intl Airport (average of £382). Flying from Massachusetts to Belfast Intl Airport in December is currently the most expensive (average of £738). 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

Travelling to a place near Belfast Intl Airport?

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

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Why should you use Cheapflights to find cheap flight tickets from Massachusetts to Belfast Intl?

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Can Cheapflights find flights from Massachusetts to Belfast Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Massachusetts to Belfast Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Massachusetts to Belfast Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Massachusetts today and book when prices fit your budget.

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