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Cheap flights from Massachusetts to Belfast from £258

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Massachusetts to Belfast

Keep the following information in mind while searching for Massachusetts to Belfast flight deals. Data was last updated 7 November 2025.

Round-trip from

£450

One-way from

£258

Popular in

December

Cheapest in

September

Average price

£505
British Airways
  • British Airways
  • 11/12-18/12
  • 2 total stops
  • 39h 15m total
  • Massachusetts to Belfast
Search Deals
British Airways
  • British Airways
  • 6/3
  • 1 total stop
  • 11h 40m total
  • Massachusetts to Belfast
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Massachusetts to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from Massachusetts to Belfast
Explore the most affordable flight options available from Massachusetts to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Thu 11/1218:55BOS - BHD
1 stop18h 55mBritish Airways
Thu 18/1206:35BHD - BOS
1 stop20h 20mBritish Airways
Deal found 6/11£450
Fri 5/1218:55BOS - BHD
1 stop10h 35mBritish Airways
Fri 12/1206:45BHD - BOS
1 stop20h 10mBritish Airways
Deal found 6/11£467
Fri 7/1119:25BOS - BHD
1 stop10h 05mBritish Airways
Fri 14/1106:45BHD - BOS
1 stop14h 25mBritish Airways
Deal found 6/11£480
Thu 6/1121:35BOS - BHD
1 stop13h 40mBritish Airways
Wed 19/1106:35BHD - BOS
1 stop12h 45mBritish Airways
Deal found 6/11£529
Thu 11/1219:50BOS - BFS
2 stops20h 15mMultiple Airlines
Thu 18/1212:10BFS - BOS
3 stops36h 50mMultiple Airlines
Deal found 6/11£536
Fri 5/1219:50BOS - BFS
3 stops24h 05mMultiple Airlines
Fri 12/1208:05BFS - BOS
3 stops35h 30mMultiple Airlines
Deal found 5/11£543
Fri 5/1215:40BOS - BHD
3 stops24h 10mMultiple Airlines
Fri 12/1207:00BHD - BOS
2 stops18h 00mMultiple Airlines
Deal found 5/11£569
Thu 11/1221:20BOS - BHD
2 stops18h 35mAer Lingus
Thu 18/1210:20BHD - BOS
2 stops13h 35mAer Lingus
Deal found 6/11£583
Fri 7/1122:45BOS - BFS
2 stops18h 15mMultiple Airlines
Fri 14/1121:20BFS - BOS
3 stops27h 35mMultiple Airlines
Deal found 6/11£640
Thu 6/1118:30BOS - BHD
2 stops17h 20mMultiple Airlines
Wed 19/1117:20BHD - BOS
1 stop25h 00mMultiple Airlines
Deal found 6/11£667
Sun 14/1211:35BOS - BFS
2 stops26h 20mMultiple Airlines
Thu 1/106:15BFS - BOS
3 stops18h 40mMultiple Airlines
Deal found 5/11£807
Thu 6/1122:45BOS - BFS
2 stops17h 50mMultiple Airlines
Wed 19/1107:40BFS - BOS
3 stops41h 15mMultiple Airlines
Deal found 6/11£909

Cheapflights Fare Finder

 
Customise your flight search to find flights from Massachusetts 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, Cheapflights users made 858,174 searches. Data last updated 7 November 2025.
Use the filters below to find and compare flights from Massachusetts to Belfast that are best for you.

Fly from

Massachusetts

Fly to

Belfast

Route

Depart

Return

Price

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 11/12

18:55-18:50

1 stop18h 55m

Belfast City

Thu 18/12

06:35-21:55

1 stop20h 20m

£450

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 5/12

18:55-10:30

1 stop10h 35m

Belfast City

Fri 12/12

06:45-21:55

1 stop20h 10m

£467

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sat 31/1

17:18-10:20

2 stops36h 02m

Belfast City

Sat 7/2

18:00-14:20

1 stop25h 20m

£480

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sat 31/1

19:15-11:10

1 stop10h 55m

Belfast City

Sat 7/2

06:35-16:48

2 stops15h 13m

£500

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 29/3

19:30-11:30

1 stop11h 00m

Belfast City

Wed 1/4

10:00-22:35

1 stop17h 35m

£528

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Thu 11/12

19:50-21:05

2 stops20h 15m

Belfast Intl

Thu 18/12

12:10-20:00

3 stops36h 50m

£536

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/12

19:50-00:55

3 stops24h 05m

Belfast Intl

Fri 12/12

08:05-14:35

3 stops35h 30m

£543

HartfordBelfast

BDL - BHD

BDLBHD

Hartford Bradley Intl

Fri 27/3

07:30-16:50

2 stops29h 20m

Belfast City

Tue 31/3

17:25-15:58

2 stops27h 33m

£730

HartfordBelfast

BDL - BHD

BDLBHD

Hartford Bradley Intl

Fri 27/3

15:11-10:30

2 stops15h 19m

Belfast City

Tue 31/3

06:35-00:22

2 stops22h 47m

£742

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 14/12

11:35-18:55

2 stops26h 20m

Belfast Intl

Thu 1/1

06:15-19:55

3 stops18h 40m

£807

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 16 results
1
2

Best time to book a flight from Massachusetts to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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

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

Currently, September is the cheapest month in which you can book a flight from Massachusetts to Belfast (average of £408). Flying from Massachusetts to Belfast in December is currently the most expensive (average of £759). 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?

Related info for your journey

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

  • How long is the flight from Massachusetts to Belfast?

    A quick flight from Massachusetts to Belfast can take about 15h 19m. British Airways provides one of the quickest options available for as low as £742. The distance from Massachusetts to Belfast is about 3066 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Massachusetts to Belfast?

    The most popular flight routes from Massachusetts to Belfast are Boston Logan Intl - Belfast Intl, Boston Logan Intl - Belfast City and Hartford Bradley Intl - Belfast Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Massachusetts to Belfast 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?

    Currently, September is the cheapest month in which you can book a flight from Massachusetts to Belfast (average of £408). Flying from Massachusetts to Belfast in December is currently the most expensive (average of £759). 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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Fly with Cheapflights

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How does Cheapflights help users find flights from Massachusetts to Belfast?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Massachusetts to Belfast. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from Massachusetts.

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

Need flexible booking options for your flight to Belfast from Massachusetts? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Massachusetts to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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