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$223+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This FlightHub deal was found by Cheapflights users on 12/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:14 amBOS - BHD
2 stops22h 51mBritish Airways
Mon 12/296:35 amBHD - BOS
1 stop12h 45mBritish Airways
Deal found 12/16$1,684
This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:50 pmBOS - BHD
1 stop19h 10mKLM
Mon 12/296:30 amBHD - BOS
1 stop11h 50mKLM
Deal found 12/16$1,764
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Mon 12/225:45 amBOS - BHD
3 stops33h 45mMultiple Airlines
Mon 12/292:15 pmBHD - BOS
2 stops35h 05mMultiple Airlines
Deal found 12/16$2,185
This FlightHub deal was found by Cheapflights users on 12/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:48 pmBOS - BHD
2 stops19h 57mBritish Airways
Sat 1/36:35 amBHD - BOS
2 stops20h 23mBritish Airways
Deal found 12/17$2,478
This Delta deal was found by Cheapflights users on 12/16. 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.
Tue 12/235:00 pmBOS - BHD
2 stops18h 50mDelta
Sat 1/36:30 amBHD - BOS
2 stops19h 38mDelta
Deal found 12/16$3,113
This Ovago deal was found by Cheapflights users on 12/17. 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.
Tue 12/237:15 pmBOS - BHD
1 stop14h 35mMultiple Airlines
Sat 1/311:35 amBHD - BOS
1 stop13h 10mMultiple Airlines
Deal found 12/17$3,366
This Ovago deal was found by Cheapflights users on 12/16. 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.
Tue 12/237:15 pmBOS - BHD
1 stop11h 15mFinnair
Sat 1/311:35 amBHD - BOS
1 stop15h 20mFinnair
Deal found 12/16$3,399

Find 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 December 18, 2025.

Round-trip from

$548
(Flysmarter)

One-way from

$223
(Cheapflightsfares)

Popular in

November

Cheapest in

September

Average price

$1,221
From Boston Logan Intl to Belfast
Search Deals
One-way flight from Boston Logan Intl to Belfast
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($291 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($60 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 18, 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

Sun 1/11

7:15 pm-10:20 am

1 stop10h 05m

Belfast City

Tue 1/27

6:35 am-4:15 pm

1 stop14h 40m

$548

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 1/11

7:50 pm-6:15 pm

2 stops17h 25m

Belfast Intl

Tue 1/27

6:30 am-5:50 pm

2 stops16h 20m

$569

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 1/23

3:35 pm-10:30 am

2 stops13h 55m

Belfast City

Fri 1/30

8:45 am-7:45 pm

1 stop16h 00m

$596

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 1/29

7:30 am-10:20 am

1 stop21h 50m

Belfast City

Mon 2/2

5:45 pm-2:20 pm

1 stop25h 35m

$600

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 5/1

3:34 pm-6:15 pm

2 stops21h 41m

Belfast City

Mon 5/4

9:50 am-8:05 pm

1 stop15h 15m

$683

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 1/31

9:15 pm-9:40 pm

2 stops19h 25m

Belfast Intl

Sat 2/7

7:20 am-6:59 pm

2 stops16h 39m

$735

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 4/19

9:55 pm-2:40 pm

1 stop11h 45m

Belfast City

Sat 4/25

7:00 pm-5:41 pm

2 stops27h 41m

$757

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 5/1

6:35 pm-8:30 pm

2 stops20h 55m

Belfast City

Mon 5/4

9:35 am-8:05 pm

3 stops39h 30m

$769

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/1

11:30 pm-11:20 pm

2 stops18h 50m

Belfast Intl

Tue 5/5

8:55 pm-7:55 pm

2 stops28h 00m

$823

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 4/8

9:50 pm-1:30 pm

1 stop10h 40m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 20 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, September is the cheapest month in which you can book a flight from Boston to Belfast (average of $534). Flying from Boston to Belfast in December is currently the most expensive (average of $1,015). 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 December 18, 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
11,055 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,055 reviews
American Airlines
7.2
Good
11,055 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
British Airways
6.7
Okay
7,585 reviews
American Airlines
7.2
Good
11,055 reviews

Comfort

7.2

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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 $548, American Airlines can have you in Belfast from Boston in 10h 05m. 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 ($542), and American Airlines ($565) offers the cheapest pricing from Boston to Belfast. You may be able to fly from Boston to Belfast for 34% 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, September is the cheapest month in which you can book a flight from Boston to Belfast (average of $534). Flying from Boston to Belfast in December is currently the most expensive (average of $1,015). 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 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$542Average$706FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$565Average$694FlexibilityNo cancel feeOn-time71%

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