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Belfast

$328+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This Ticket deal was found by Cheapflights users on 2/3. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/97:10 pm
BOS
-
BHD
1 stop16h 40m
Virgin Atlantic
Tue 2/246:30 am
BHD
-
BOS
2 stops16h 51m
Virgin Atlantic
Deal found 2/3$535
This Flysmarter deal was found by Cheapflights users on 2/3. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/97:15 pm
BOS
-
BHD
1 stop10h 25m
Multiple Airlines
Tue 2/2410:00 am
BHD
-
BOS
1 stop11h 15m
Multiple Airlines
Deal found 2/3$552
This Trip.com deal was found by Cheapflights users on 2/2. 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.
Mon 4/69:50 pm
BOS
-
BHD
1 stop12h 40m
British Airways
Mon 4/137:35 pm
BHD
-
BOS
1 stop26h 20m
British Airways
Deal found 2/2$589
This Mytrip deal was found by Cheapflights users on 2/2. 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 3/1912:35 pm
BOS
-
BFS
2 stops27h 50m
Multiple Airlines
Thu 3/267:05 am
BFS
-
BOS
2 stops15h 45m
Multiple Airlines
Deal found 2/2$618
This Mytrip deal was found by Cheapflights users on 2/2. 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 4/69:15 pm
BOS
-
BFS
2 stops20h 50m
Multiple Airlines
Mon 4/136:30 am
BFS
-
BOS
2 stops17h 20m
Multiple Airlines
Deal found 2/2$619
This KAYAK deal was found by Cheapflights users on 2/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:50 pm
BOS
-
BHD
1 stop12h 40m
British Airways
Mon 5/183:20 pm
BHD
-
BOS
1 stop30h 35m
British Airways
Deal found 2/2$646
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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.
Thu 4/307:35 pm
BOS
-
BHD
1 stop9h 35m
British Airways
Sun 5/1011:00 am
BHD
-
BOS
1 stop10h 55m
British Airways
Deal found 2/2$668
This Mytrip deal was found by Cheapflights users on 2/3. 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 3/118:50 pm
BOS
-
BFS
2 stops15h 20m
Multiple Airlines
Sat 3/149:15 am
BFS
-
BOS
3 stops34h 20m
Multiple Airlines
Deal found 2/3$678
This oojo deal was found by Cheapflights users on 2/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/145:53 pm
BOS
-
BHD
2 stops13h 17m
British Airways
Wed 3/186:35 am
BHD
-
BOS
1 stop12h 45m
British Airways
Deal found 2/3$680
This Trip.com deal was found by Cheapflights users on 2/3. 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.
Fri 3/136:00 am
BOS
-
BFS
2 stops22h 20m
Multiple Airlines
Wed 3/187:00 am
BFS
-
BOS
1 stop19h 55m
Multiple Airlines
Deal found 2/3$684
This British Airways deal was found by Cheapflights users on 2/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:55 pm
BOS
-
BHD
1 stop10h 25m
British Airways
Thu 3/59:05 am
BHD
-
BOS
1 stop15h 40m
British Airways
Deal found 2/1$687
This British Airways deal was found by Cheapflights users on 2/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/39:55 pm
BOS
-
BHD
1 stop11h 40m
British Airways
Thu 5/77:30 pm
BHD
-
BOS
1 stop26h 30m
British Airways
Deal found 2/1$696

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 February 4, 2026.

Round-trip from

$589
(Trip.com)

One-way from

$328
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$776
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. 26% potential increase in price ($297 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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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 February 4, 2026.
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 - BFS

BOSBFS

Boston Logan Intl

Thu 3/19

12:35 pm-8:25 pm

2 stops27h 50m

Belfast Intl

Thu 3/26

7:05 am-6:50 pm

2 stops15h 45m

$618

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 4/6

9:15 pm-11:05 pm

2 stops20h 50m

Belfast Intl

Mon 4/13

6:30 am-6:50 pm

2 stops17h 20m

$619

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 5/8

9:50 pm-3:30 pm

1 stop12h 40m

Belfast City

Mon 5/18

7:35 pm-6:48 pm

2 stops28h 13m

$664

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 3/11

8:50 pm-4:10 pm

2 stops15h 20m

Belfast Intl

Sat 3/14

9:15 am-3:35 pm

3 stops34h 20m

$678

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sat 3/14

5:53 pm-11:10 am

2 stops13h 17m

Belfast City

Wed 3/18

6:35 am-3:20 pm

1 stop12h 45m

$680

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 3/13

6:00 am-8:20 am

2 stops22h 20m

Belfast Intl

Wed 3/18

7:00 am-10:55 pm

1 stop19h 55m

$684

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 3/1

6:55 pm-10:20 am

1 stop10h 25m

Belfast City

Thu 3/5

9:05 am-7:45 pm

1 stop15h 40m

$687

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 5/3

9:55 pm-2:35 pm

1 stop11h 40m

Belfast City

Thu 5/7

7:30 pm-5:00 pm

1 stop26h 30m

$696

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 3/13

6:00 am-8:25 am

2 stops22h 25m

Belfast City

Wed 3/18

12:25 pm-8:45 pm

1 stop12h 20m

$710

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 3/13

6:00 am-8:25 am

2 stops22h 25m

Belfast City

Tue 3/17

6:35 am-8:45 pm

1 stop18h 10m

$710

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 17 results
1
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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.

How much does it cost to fly round-trip from Boston to Belfast?

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 February 4, 2026.
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
11,222 reviews

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,222 reviews
American Airlines
7.2
Good
11,222 reviews

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
British Airways
6.7
Okay
7,715 reviews
American Airlines
7.2
Good
11,222 reviews

Comfort

7.2

Food

6.4

Overall

7.2

Entertainment

6.9

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 $664, British Airways can have you in Belfast from Boston in 12h 40m. There are 2981 mi between Boston and Belfast.

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

    According to our current data, British Airways ($538), 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

Browse thousands of different options on Cheapflights for your next trip

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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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$538Average$715FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$565Average$694FlexibilityNo cancel feeOn-time71%

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