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$295+ Cheap flights from Boston (BOS) to Belfast

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Boston to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$517
(oojo)

One-way from

$295
(Delta)

Popular in

December

Cheapest in

September

Average price

$623
From Boston Logan Intl to Belfast
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One-way flight from Boston Logan Intl to Belfast
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Highest demand for flights based on searches. 12% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boston to Belfast

Cheapest flights from Boston to Belfast
Explore the most affordable flight options available from Boston to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:50 pmBOS - BFS
2 stops19h 50mMultiple Airlines
Wed 11/266:30 amBFS - BOS
2 stops16h 20mMultiple Airlines
Deal found 9/14$565
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:10 pmBOS - BHD
1 stop12h 20mAmerican Airlines
Sun 10/126:50 amBHD - BOS
2 stops15h 25mAmerican Airlines
Deal found 9/13$572
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:35 amBOS - BHD
2 stops27h 00mMultiple Airlines
Wed 11/267:25 amBHD - BOS
2 stops15h 25mMultiple Airlines
Deal found 9/14$589
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:20 pmBOS - BFS
2 stops13h 55mMultiple Airlines
Wed 11/512:20 pmBFS - BOS
3 stops31h 15mMultiple Airlines
Deal found 9/14$596
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:10 pmBOS - BHD
1 stop19h 35mAmerican Airlines
Sun 9/286:50 amBHD - BOS
1 stop20h 55mAmerican Airlines
Deal found 9/14$602
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:25 pmBOS - BHD
1 stop17h 35mAmerican Airlines
Wed 11/2612:25 pmBHD - BOS
2 stops16h 19mAmerican Airlines
Deal found 9/14$612
This Ovago deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/269:35 pmBOS - BHD
1 stop28h 55mBritish Airways
Sun 11/308:25 pmBHD - BOS
1 stop28h 20mBritish Airways
Deal found 9/15$616
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/217:30 amBOS - BHD
1 stop19h 55mBritish Airways
Wed 11/266:35 amBHD - BOS
1 stop12h 45mBritish Airways
Deal found 9/14$628
This Ovago deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:30 amBOS - BHD
2 stops21h 20mBritish Airways
Tue 9/308:20 pmBHD - BOS
1 stop19h 55mBritish Airways
Deal found 9/15$633
This Air France deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/268:15 pmBOS - BHD
1 stop15h 40mMultiple Airlines
Tue 9/305:25 pmBHD - BOS
1 stop28h 05mMultiple Airlines
Deal found 9/14$636
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/268:50 pmBOS - BHD
2 stops19h 25mDelta
Tue 9/306:30 amBHD - BOS
1 stop15h 00mDelta
Deal found 9/14$640
This Virgin Atlantic deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/178:15 pmBOS - BHD
1 stop20h 00mVirgin Atlantic
Fri 9/196:30 amBHD - BOS
2 stops17h 50mVirgin Atlantic
Deal found 9/13$645

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Boston to Belfast that are best for you.

Fly from

Boston

Fly to

Belfast

Route

Depart

Return

Price

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 3/9

8:30 am-10:40 am

1 stop22h 10m

Belfast City

Mon 3/16

7:25 pm-8:45 pm

1 stop29h 20m

$517

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Thu 11/20

7:50 pm-8:40 pm

2 stops19h 50m

Belfast Intl

Wed 11/26

6:30 am-5:50 pm

2 stops16h 20m

$565

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 10/8

8:10 pm-1:30 pm

1 stop12h 20m

Belfast City

Sun 10/12

6:50 am-5:15 pm

2 stops15h 25m

$572

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 10/29

10:20 pm-4:15 pm

2 stops13h 55m

Belfast Intl

Wed 11/5

12:20 pm-2:35 pm

3 stops31h 15m

$596

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 11/20

7:25 pm-4:40 pm

1 stop16h 15m

Belfast City

Wed 11/26

6:35 am-4:10 pm

1 stop14h 35m

$602

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 11/26

9:35 pm-7:30 am

1 stop28h 55m

Belfast City

Sun 11/30

8:25 pm-7:50 pm

2 stops28h 25m

$628

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 11/21

7:30 am-8:25 am

1 stop19h 55m

Belfast City

Wed 11/26

6:35 am-2:20 pm

1 stop12h 45m

$628

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 9/26

6:30 am-8:50 am

2 stops21h 20m

Belfast City

Tue 9/30

8:20 pm-11:15 am

1 stop19h 55m

$633

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 9/26

8:15 pm-4:55 pm

1 stop15h 40m

Belfast City

Tue 9/30

5:25 pm-4:30 pm

1 stop28h 05m

$636

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 9/26

8:50 pm-9:15 pm

2 stops19h 25m

Belfast City

Tue 9/30

6:30 am-4:30 pm

1 stop15h 00m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 14 results
1
2

Best time to book a flight from Boston to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Boston with our price prediction graph.
Estimated round-trip 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 Belfast

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

Currently, February is the cheapest month in which you can book a flight from Boston to Belfast (average of $657). Flying from Boston to Belfast in June is currently the most expensive (average of $1,189). 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.

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated September 16, 2025.
See what other customers who have flown with American Airlines and British Airways from Boston to Belfast have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
British Airways
6.7
Okay
7,361 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Food

6.4

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Boston to Belfast. 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 Belfast?

    If you book a flight to Belfast from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 0 flights from Logan Intl to Belfast per day from 2 different airlines.

  • How long is the flight from Boston to Belfast?

    For as low as $572, British Airways can have you in Belfast from Boston in 12h 20m. There are 2981 mi between Boston and Belfast. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Boston to Belfast round-trip?

    According to our current data, British Airways ($538), and American Airlines ($581) offers the cheapest pricing from Boston to Belfast. You may be able to fly from Boston to Belfast for 28% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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 Boston to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Boston to Belfast (average of $657). Flying from Boston to Belfast in June is currently the most expensive (average of $1,189). 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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Alternative routes for Boston to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Belfast Intl flights
Boston to Belfast City flights
Hartford to Belfast Intl flights
Hartford to Belfast City flights
Worcester to Belfast City flights

Top 2 airlines flying from Boston to Belfast

Discover the top 2 airlines that operate flights from Boston to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$538Average$676FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$581Average$670FlexibilityNo cancel feeOn-time71%

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