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$649+ Cheap flights from Belfast Intl (BFS) to Boston (BOS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — BOS
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Belfast Intl to Boston

Best flights from Belfast Intl to Boston
Discover carefully curated flight deals from Belfast Intl to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

This Mytrip deal was found by Cheapflights users on 12/21. 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 2/44:35 pmBFS - BOS
2 stops32h 25mMultiple Airlines
Wed 2/113:35 pmBOS - BFS
3 stops19h 35mMultiple Airlines
Deal found 12/21$649
This Kiwi.com deal was found by Cheapflights users on 12/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1210:20 pmBFS - BOS
2 stops25h 30mMultiple Airlines
Mon 1/197:10 pmBOS - BFS
1 stop16h 05mMultiple Airlines
Deal found 12/22$729
This Mytrip deal was found by Cheapflights users on 12/22. 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.
Thu 2/56:30 amBFS - BOS
3 stops38h 58mMultiple Airlines
Thu 2/126:15 amBOS - BFS
3 stops33h 10mMultiple Airlines
Deal found 12/22$774
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:30 amBFS - BOS
2 stops16h 20mMultiple Airlines
Mon 6/159:45 pmBOS - BFS
1 stop16h 20mMultiple Airlines
Deal found 12/21$1,755

Find flight deals from Belfast Intl to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Boston (BOS). 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 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$649
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$931
Provider with most accurate pricing for Belfast Intl-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Belfast Intl-Boston Logan Intl flights.
Search Deals
From Belfast Intl to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Belfast Intl to Boston 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 23, 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Boston that are best for you.

Fly from

Belfast Intl

Fly to

Boston

Route

Depart

Return

Price

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Wed 2/4

4:35 pm-8:00 pm

2 stops32h 25m

Boston Logan Intl

Wed 2/11

3:35 pm-4:10 pm

3 stops19h 35m

$649

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Mon 1/12

10:20 pm-6:50 pm

2 stops25h 30m

Boston Logan Intl

Mon 1/19

7:10 pm-4:15 pm

1 stop16h 05m

$729

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Thu 2/5

6:30 am-4:28 pm

3 stops38h 58m

Boston Logan Intl

Thu 2/12

6:15 am-8:25 pm

3 stops33h 10m

$774

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Fri 6/12

8:30 am-7:50 pm

2 stops16h 20m

Boston Logan Intl

Mon 6/15

9:45 pm-7:05 pm

1 stop16h 20m

$1,755

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Compare providers for flights from Belfast Intl to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Belfast Intl to Boston in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Belfast Intl Airport-Boston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Belfast Intl Airport-Boston flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Belfast Intl Airport-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Belfast Intl Airport-Boston flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Belfast Intl Airport-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Belfast Intl to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Belfast Intl 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.

Related info for your journey

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

    Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Belfast Intl. On average, Logan Intl has 0 inbound flights from Belfast Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
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Smithfield
Peabody
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Waltham
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